A deep red solution was obtained, but the free quinone was not isolated since the solution on standing deposits nearly black crystals of dihydroxyphenylhydroxybenzoquinone (HO)2C6H3 C6H202.OH.
A laboratory technician places some of the fluid on a slide and looks for monosodium urate crystals under a microscope.
A pair of identical quartz crystals with axes arranged mutually perpendicular would be required with output signals added to produce a beat frequency.
A pure white blende from Franklin in New Jersey is known as cleiophane; snow-white crystals are also found at Nordmark in Vermland, Sweden.
A similar distribution of electric charges is produced when a crystal is subjected to pressure; quartz being thus also piezo-electric. Etched figures, both natural and artificial (in the latter case produced by the action of hydrofluoric acid), on the faces of the crystals are in accordance with the symmetry, and may serve to distinguish leftand righthanded crystals.
A slight degree of acidity seems more favourable to the crystallization of salt than alkalinity; thus it is a practice to add a certain amount of alum, 2 to 12 lb per pan of brine, especially when, as in fishery salt, fine crystals are required.
A soluble regular insulin that has had chemicals added to prevent insulin crystals forming.
A way to help retain moisture in the basket is to use water gel crystals.
About 15% of a volatile oil is obtained by distilling cubebs with water; after rectification with water, or on keeping, this deposits rhombic crystals of camphor of cubebs, C 15 H 26 O; cubebene, the liquid portion, has the formula C15HV4.
Actually rock crystals, they occur in the tension gashes that can be seen in the Devonian sandstone cliffs at various localities.
Add personal touches to the invitation, such as sprinkling glitter into the envelope, creating a custom postage stamp with a castle or related scene, or gluing small crystals to the corners of the invitation card.
African mines the diamonds are not only crystals of various weights from fractions of a carat to 150 carats, but also occur as microscopic crystals disseminated through the blue ground.
After long continued frost the last of the included brine may be frozen and the salts driven out in crystals on the surface; these crystals are known to polar explorers by the Siberian name of rassol.
After twenty-four hours about one-half of the silver has separated out in crystals; from the mother-liquor the rest comes down promptly on application pf a water-bath heat.
Again, there are chambers with drifts of snowy crystals of the sulphate of magnesia, the ceilings so thickly covered with their efflorescence that a loud concussion will cause them to fall like flakes of snow.
AgI, occurs in nature as the mineral iodargyrite or iodyrite, forming hexagonal crystals, or yellowish green plates.
Air trapped inside the bag creates crystals of ice and may lead to an off odor, color or taste.
Airy extended Fresnel's hypothesis to directions inclined to the axis of uniaxal crystals by assuming that in any such direction the two waves, that can be propagated without alteration of their state of polarization, are oppositely elliptically polarized with their planes of maximum polarization parallel and perpendicular to the principal plane of the wave, these becoming practically plane polarized at a small inclination to the optic axis.
All pyroelectric crystals are necessarily piezoelectric, with some also being ferroelectric.
All the mixtures whose composition lies between that of A and C deposit crystals of pure.
All these names are derived from the size and appearance of the crystals, their uses and the modes of their production.
Alloys represented by points on Ee, when they begin to solidify, deposit crystals of lead and bismuth simultaneously; Ee is a eutectic line, as also are E'e and E"e.
Also it is of considerable interest to produce bigger protein crystals for neutron diffraction studies of hydrogen deuterium exchange, in particular cases.
Also, the crystals can cause occasional attacks of very painful swelling (pseudogout, or acute pyrophosphate arthritis ).
Aluminium nitride (A1N) is obtained as small yellow crystals when aluminium is strongly heated in nitrogen.
Ammonia is found in small quantities as the carbonate in the atmosphere, being produced from the putrefaction of nitrogenous animal and vegetable matter; ammonium salts are also found in small quantities in rain-water, whilst ammonium chloride (sal-ammoniac) and ammonium sulphate are found in volcanic districts; and crystals of ammonium bicarbonate have been found in Patagonian guano.
Among objects used are a pool of ink in the hand (Egypt), the liver of an animal (tribes of the North-West Indian frontier), a hole filled with water (Polynesia), quartz crystals (the Apaches and the Euahlayi tribe of New South Wales), a smooth slab of polished black stone (the Huille-che of South America), water in a vessel (Zulus and Siberians), a crystal (the Incas), a mirror (classical Greece and the middle ages), the finger-nail, a swordblade, a ring-stone, a glass of sherry, in fact almost anything.
Among those directly visible to the microscope are oil drops, often coloured (Uredineae) crystals of calcium oxalate (Phallus, Russula), proteid crystals (Mucor, Pilobolus, &c.) and resin (Polyporei).
An example of such a system is the nucleation of calcite crystals on carboxylic acid terminated alkyl thiols, which produces highly oriented crystals.
An oxysulphide, 2CaS CaO, is sometimes present in "soda - waste," and orangecoloured, acicular crystals of 4CaS CaSO 4.18H 2 O occasionally settle out on the long standing of oxidized "sodaor alkali-waste" (see Alkali Manufacture).
Another method consists in mixing the powdered bark with milk of lime, drying the mass slowly with frequent stirring, exhausting the powder with boiling alcohol, removing the excess of alcohol by distillation, adding sufficient dilute sulphuric acid to dissolve the alkaloid and throw down colouring matter and traces of lime, &c., filtering, and allowing the neutralized liquid to deposit crystals.
Any remaining carbon-containing material is converted to SiC, leaving occasional SiC crystals on the Si surface.
Any remaining carbon-containing material is converted to sic, leaving occasional SiC crystals on the Si surface.
Apart from crystalline form, the external characters of marcasite are very similar to those of pyrites, and when distinct crystals are not available the two species cannot always be easily distinguished.
Aqueous solutions deposit crystals containing 2, 4 or 6 molecules of water.
Aragonite is the least stable form; crystals have been found altered to calcite.
As found in nature, saltpetre generally forms aggregates of delicate acicular crystals, and sometimes silky tufts; distinctly developed crystals are not found in nature.
As more ice melts the methane contained in the ice crystals is released in greater quantities.
As regards the course - of the streams on refraction into the crystal, it is found that it is determined by the Huygenian law (see Refraction, § Double); as, however, the two streams in the direction of the axis have different speeds, the spherical and the spheroidal sheets of the wavesurface do not touch as in the case of inactive uniaxal crystals.
At Sao Joao da Chapada, in Minas Geraes, diamonds occur in a clay interstratified with the itacolumite, and are accompanied by sharp crystals of rutile and haematite in the neighbourhood of decomposed quartz veins which intersect the itacolumite.
At that temperature crystals of the anhydrous Na 2 SO 4 appear, and a new fixed equilibrium exists between the four phases - hydrate, anhydrous salt, solution and vapour.
Attractive globular aggregates of well-developed radiating crystals have been found at Akatani, a village in the province Echizen, in Japan.
Baking soda crystals are combined with feces odor neutralizers.
Beadwork that is executed using Swarovski crystals is certainly more elegant than sequins.
Beautiful rhinestones and crystals in an assortment of spectacular colors are mounted in striking designs and patterns on fancy collars that are trendy and fashionable.
Beautiful rock crystals occur in veins in the corries.
Beryllium oxide, beryllia or glucina, BeO, is a very hard white powder which can be melted and distilled in the electric furnace, when it condenses in the form of minute hexagonal crystals.
Bismuth trifluoride, BiF3, a white powder, bismuth tribromide, BiBr 3, golden yellow crystals, bismuth iodide, Bi13, greyish-black crystals, are also known.
Borax crystallizes with ten molecules of water, the composition of the crystals being Na2B407+10H20.
Bort (or Boart) is the name given to impure crystals or fragments useless for jewels; it is also applied to the rounded crystalline aggregates, which generally have a grey colour, a rough surface, often a radial structure, and are devoid of good cleavage.
But if we polish the solid alloys, etch them if necessary, and examine them microscopically, we shall find that alloys on the lead side of the diagram consist of comparatively large crystals of lead embedded in a minute complex, which is due to the simultaneous crystallization of the two metals during the solidification at the eutectic temperature.
But it is obvious that certain distributions will predominate, for the crystals will tend to fall so as to offer the least resistance to their motion; a needle-shaped crystal tending to keep its axis vertical, a plate-shaped crystal to keep its axis horizontal.
But rather than being composed of uric acid, pseudogout crystals are made of calcium pyrophosphate dihydrate.
But, if no solid be present initially, or if the cooling be rapid, the liquid of composition x becomes supersaturated and may cool till the supersaturation curve is reached at b, and a cloud of A crystals comes down.
But, in other cases, crystals are known in which both components may enter.
By crystallizing an aqueous solution, red crystals of AuC1 3.2H 2 O are obtained.
By evaporating in vacuo the solution obtained by dissolving iron in hydrochloric acid, there results bluish, monoclinic crystals of FeCl24H20, which deliquesce, turning greenish, on exposure to air, and effloresce in a desiccator.
By evaporation of a solution of lanthanum oxide in hydrochloric acid to the consistency of a syrup, and allowing the solution to stand, large colourless crystals of a hydrated chloride of the composition 2LaC1 3.15H 2 O are obtained.
By evaporation the green vitriol is obtained as large crystals.
By filling these small gaps with liquid crystals we have also been able to develop a new low voltage tunable microwave filter.
By heating with sodium amalgam and separating with hydrochloric acid, the dichloride, TaC1 2.2H 2 O, is obtained as emerald green hexagonal crystals.
By modern mineralogists the name chalcedony is restricted to those kinds of silica which occur not in distinct crystals like ordinary quartz, but in concretionary, mammillated or stalactitic forms, which break with a fine splintery fracture, and display a delicate fibrous structure.
Calcite crystals, drusy, feathery or fern-like, line the sides and bottom of every water-filled cavity, and indeed constitute the sub stance of which they are made.
Calcium metasilicate, CaSiO 3, occurs in nature as monoclinic crystals known as tabular spar or wollastonite; it may be prepared artificially from solutions of calcium chloride and sodium silicate.
Cat litter crystals have the advantage of being light weight.
Cat litter crystals provide one of several options for filling cat litter boxes.
Cats with sensitive feet may not like sharp crystals.
Cavities containing liquid occasionally occur in crystals of fluor-spar, notably in the greasy green cubes.
Cavities within the massive banded barite are commonly lined with translucent brown prismatic crystals.
Cavities, either rounded or with the same shape ("negative crystals") as the surrounding crystal, are also common; they are often of minute size and present in vast numbers.
Certain crystals from Cumberland are beautifully fluorescent, appearing purple with a bluish internal haziness by reflected light, and greenish by transmitted light.
Certain flat oval nodules from a decomposed lava (augite-andesite) in Uruguay present a cavity lined with quartz crystals and enclosing liquid (a weak saline solution), with a movable air-bubble, whence they are called "enhydros" or water-stones.
Cesena and Perticara are well-known localities in this district, the latter yielding crystals coated with asphalt.
Chandeliers do not have to be full of crystals and ballroom appeal; a chandelier in a warm color such as oil rubbed bronze or antiqued copper can lend soft detail to the space.
Chromic sulphate, Cr2(S04)3, is prepared by mixing the hydroxide with concentrated sulphuric acid and allowing the mixture to stand, a green solution is first formed which gradually changes to blue, and deposits violet-blue crystals, which are purified by dissolving in water and then precipitating with alcohol.
Chromium trioxide, Cr03, is obtained by adding concentrated sulphuric acid to a cold saturated solution of potassium bichromate, when it separates in long red needles; the mother liquor is drained off and the crystals are washed with concentrated nitric acid, the excess of which is removed by means of a current of dry air.
Chromous sulphate, CrS04 7H 2 0, isomorphous with ferrous sulphate, results on dissolving the metal in dilute sulphuric acid or, better, by dissolving chromous acetate in dilute sulphuric acid, when it separates in blue crystals on cooling the solution.
Cirrus is a nearly unique source of these displays because they are produced by the refraction of light-rays passing through ice crystals.
Cleveland's Cabinet and Marion's Avenue, each a mile long, are adorned by myriads of gypsum rosettes and curiously twisted crystals, called "oulopholites."
Collect your first batch of crystals within 10 minutes!
Color change can also be produced by using compensators that alter the phase of the light rays passing through the crystals.
Common washing soda or soda-crystals is the decahydrate, Na2C03 IoH 2 O, which appears as large clear monoclinic crystals.
Concentration of the aqueous solution in a desiccator gives a deposit of crystals of a very deliquescent salt, H21n2(S04)4.8H20.
Confusion has arisen in regard to this point from attempts to compare organized bodies with crystals, the comparison having been suggested by the view that as crystals present the highest type of inorganic structure, it was reasonable to compare them with organic matter.
Consequently, as the final solid is uniform, the crystals formed at first must change in composition at a later stage.
Contemporary colored wedding dresses feature satin sashes, embroidery, and crystals in wedding hues.
Crystals are also subject to aging and mechanically induced noise.
Crystals are used to aid the bodies own healing ability for physical, emotional and mental imbalances, which can lead to illness.
Crystals are usually twinned, and are often complex and difficult to decipher.
Crystals belonging to the cubic system should not be birefringent unless strained; diamond often displays double refraction particularly in the neighbourhood of inclusions, both liquid and solid; this is probably due to strain, and the spontaneous explosion of diamonds has often been observed.
Crystals exhibit pyroelectrical characters, since they possess four uniterminal triad axes of symmetry.
Crystals have imperfect cleavages parallel to the eight faces of the pyramid c 12011.
Crystals may be obtained by heating di-calcium pyrophosphate, Ca2P207, with water under pressure.
Crystals of arsenic belong to the rhombohedral system, and have a perfect cleavage parallel to the basal plane; natural crystals are, however, of rare occurrence, and are usually acicular in habit.
Crystals of azurite belong to the monoclinic system; they have a vitreous lustre and are translucent.
Crystals of barytes may be transparent and colourless, or white and opaque, or of a yellow, brown, bluish or greenish 'colour.
Crystals of blende are of very common occurrence, but owing to twinning and distortion and curvature of the faces, they are often rather complex and difficult to decipher.
Crystals of blende belong to that subclass of the cubic system in which there are six planes of symmetry parallel to the faces of the rhombic dodecahedron and none parallel to the cubic faces; in other words, the crystals are cubic with inclined hemihedrism, and have no centre of symmetry.
Crystals of ice may lie side by side with crystals of common salt, but each crystalline individual is either ice or salt; no one crystal contains both components in proportions which can be varied continuously.
Crystals of ordinary borax swell up to a very great extent on heating, losing their water of crystallization and melting to a clear white glass.
Crystals of quartz may be readily prepared artificially by a number of methods; for example, by heating glass or gelatinous silica with water under pressure.
Crystals with a helical twist are not uncommon.
Delicate, acicular crystals with tiny quartz crystals attached to their terminations.
Derived products in the form of crystals of phillipsite are not uncommon, but the most abundant of all are the incrustations of manganese oxide, as to the origin of which Murray and Renard are not fully clear.
Details-Dresses may or may not have embellishments, such as rhinestones, jewels, crystals, embroidery, pearls or colorful beads.
Devon, notably near Liskeard, where fine crystals have been found, with faces of the six-faced octahedron replacing the corners of the cube.
Differences between crystals and organized bodies have no bearing on the problem of life, for organic substance must be compared with a liquid rather than with a crystal, and differs in structure no more from inorganic liquids than these do amongst themselves, and less than they differ from crystals.
Distinct crystals are rarely met with; these are rhombohedral and isomorphous with arsenic and bismuth; they have a perfect cleavage parallel to the basal plane, c (111), and are sometimes twinned on a rhombohedral plane, e (1 ro).
Distinctly developed crystals are, however, of rare occurrence; they are usually acicular with acute pyramid-planes and are repeatedly twinned on the prism.
Each belt buckle is handmade with approximately 100 Swarovski crystals and metal nail heads.
Enclosures of other minerals (rutile, chlorite, haematite, gothite, actinolite, asbestos and many others) are extremely frequent in crystals of quartz.
Enzyme cleaners are made from formulas containing special ingredients that actually eat the crystals and bacteria present in cat urine.
Except in the larger nuggets, which may be more or less angular, or at times even masses of crystals, with or without associated quartz or other rock, gold is generally found bean-shaped or in some other flattened form, the smallest particles being scales of scarcely appreciable thickness, which, from their small bulk as compared with their surface, subside very slowly when suspended in water, and are therefore readily carried away by a rapid current.
Ferric bromide, FeBr31 is obtained as dark red crystals by heating iron in an excess of bromine vapour.
Ferric fluoride, FeF 31 is obtained as colourless crystals (with 42H2O) by evaporating a solution of the hydroxide in hydrofluoric acid.
Ferric nitrate, Fe(NO3) 3, is obtained by dissolving iron in nitric acid (the cold dilute acid leads to the formation of ferrous and ammonium nitrates) and crystallizing, when cubes of Fe(NO3)3.6H20 or monoclinic crystals of Fe(N03)3.9H20 are obtained.
Ferric sulphate, Fe2(S04)3, is obtained by adding nitric acid to a hot solution of ferrous sulphate containing sulphuric acid, colourless crystals being deposited on evaporating the solution.
Ferrous bromide, FeBr2, is obtained as yellowish crystals by the union of bromine and iron at a dull red-heat, or as bluish-green rhombic tables of the composition FeBr26H2O by crystallizing a solution of iron in hydrobromic acid.
Ferrous sulphate forms large green crystals belonging to the monoclinic system; rhombic crystals, isomorphous with zinc sulphate, are obtained by inoculating a solution with a crystal of zinc sulphate, and triclinic crystals of the formula FeSO 4.5H 2 O by inoculating with copper sulphate.
Figure 1. Spectral changes spaced a minute apart during enzyme catalysis in crystals of E. coli amine oxidase.
Figure 4. Synovial fluid CPPD crystals (compensated polarized light microscopy x400 ); scant numbers of rhomboid crystals showing weak positive birefringence.
For a sensitive cat, choose the finest crystals available.
For example, crystals up to 7 in.
For example, the compound Cu3Sn is not indicated in the freezing-point curve, and indeed a liquid alloy of this percentage does not begin to solidify by the formation of crystals of Cu 3 Sn; the liquid solidifies completely to a uniform solid solution, and only at a lower temperature does this change into crystals of the compound, the transformation being accompanied by a considerable evolution of heat.
For instance, a simple dining room chandelier can take on a Victorian feel with some pretty spray paint and the addition of bead and crystals.
For the observation and measurement of rings in crystals polariscopes are constructed on the following principle.
For the sulphate of copper solution, take 16.5 parts by weight of pure crystals of copper sulphate (CuSO 4 50H 2) and dissolve in 83.5 parts by weight of water; the resulting solution should have a specific gravity of 1.
For the zinc solution, take 55.5 parts by weight of crystals of zinc sulphate (ZnS0470H2) and dissolve in 44.5 p arts by weight of distilled water; the resulting FIG.
From shimmering rhinestones and Swarovski crystals to Rococo swirled ribbon and luxurious leather, fancy dog collars are must have accessories for pampered pooches of all kinds.
From the labours of his pupil Miotto sprang that branch of the glass trade which is concerned with the imitation of gems. In the 15th century the first crystals were made, and in the 17th the various gradations of coloured and iridescent glass were invented, together with the composition called " aventurine "; the manufacture of beads is now a main branch of the trade.
From the mine of Ichinokawa in Shikoku come the wonderful crystals of antimonite, which form such conspicuous objects in the mineralogical cabinets of Europe.
From this and other evidence it has been shown that the first thin shower in open vessels is produced by the accidental presence of tiny crystals obtained from the dust of the air, while the second dense shower marks the point of spontaneous crystallization, where the decrease in total available energy caused by solidification becomes greater than the increase due to the large surface of contact between the liquid and the potentially existing multitudinous small crystals of the shower.
Further, a revolving stage plate provided with a graduation B is used to determine the angle in crystals.
Further, certain cubic crystals, such as sodium chlorate and bromate, and also some liquids and even vapours, rotate the plane of polarization of the light that traverses them, whatever may be the direction of the stream.
Further, these varieties may be of almost any colour, whereas transparent crystals have only a limited range of colour, being either colourless (rock-crystal), violet (amethyst), brown (smoky quartz) or yellow (citrine).
Further, unlike diamond, it never occurs as distinctly developed crystals, but only as imperfect six-sided plates and scales.
Good crystals have also been obtained as a furnace product.
Granite is a lighter colored igneous rock containing relatively large crystals of the minerals plagioclase, quartz and alkali feldspars such as orthoclase.
Granulated sugar, so called, is made by passing the crystals, after leaving the centrifugals, through a large and slightly inclined revolving cylinder with a smaller one inside heated by steam.
Guvacine, named from "guvaca," an Indian designation of the betel palm, forms white crystals.
Hairy considered the crystals to be only distorted cubic forms.
Has anybody else out there been able to get crystals of RNA or DNA using sodium citrate as the precipitant?
He also found that the polarity which minerals receive from heat has a relation to the secondary forms of their crystals - the tourmaline, for example, having its resinous pole at the summit of the crystal which has three faces.
He also used silica gel crystals to absorb the moisture.
Hence some stalactites have their tips under water long enough to allow tassels of crystals to grow on them, which, in a drier season, are again coated over with stalactitic matter; and thus singular distortions are occasioned.
Hence the conditions necessary to secure equilibrium when the solid phase is present are not the same as those necessary to cause crystallization to start in a number of crystals at first excessively minute in size.
Henry Lloyd Thompson rubs salt between his fingers, feeling the texture of the crystals and squeezes handfuls together to judge the moisture content.
Here a separation takes place between the crystals of sodium bicarbonate and the mother-liquor.
Here also are polished stalagmites, a rich buff slashed with white, and others, like huge mushrooms, with a velvety coat of red, purple or olive-tinted crystals.
Here we report the measurement of electron diffraction patterns from these crystals.
Hot or dilute cold solutions deposit minute orthorhombic crystals of aragonite, cold saturated or moderately strong solutions, hexagonal (rhombohedral) crystals of calcite.
However, MnS crystals adopting the zinc blende structure (beta-MnS) can also be grown under appropriate conditions.
However, most people find that a small amount of litter crystals lasts longer than a larger amount of clay or biodegradable cat litter made with organic material.
However, sequins are less expensive than crystals and can be used abundantly, whereas the costs of a dress liberally laden with crystals can become egregiously pricey.
I could find no evidence to support it's use in treating/preventing urinary tract crystals, but vets sometimes use drugs as off label medications, meaning they use them to treat conditions not listed on the label.
I have a mature adult male cat that has experienced urinary crystals and difficulty urinating in the past.
I placed the three crystals individually and was finally able to shake them free of the forceps.
I think this will give you a good indication of which vet's advice to follow, and also give you another opportunity to discuss ways of controlling the formation of urinary crystals.
Ice crystals join together to form snow flakes.
If a solution of a salt be stirred as it cools in an open vessel, a thin shower of crystals appears at or about the saturation temperature.
If innumerable numbers of such crystals fall in any manner between the observer and the sun, light falling upon these crystals will be refracted, and the refracted rays will be crowded together in the position of minimum deviation (see Refraction Of Light).
If purer and stronger soda-ash is wanted, the boiling down must be carried out in pans fired from below, and the crystals of monohydrated sodium carbonate " fished " out as they are formed, but this is mostly done after submitting the liquor to the purifying operations which we shall now describe.
If the temperature at which this dense spontaneous shower of crystals is found be determined for different concentrations of solution, we can plot a "supersolubility curve," which is found generally to run roughly parallel to the "solubility curve" of steady equilibrium between liquid and already existing solid.
If their bridal dress has crystals on the bodice or a chiffon skirt, they may want to look for a dress with the same design.
If there are crystals found in the urine, they will be studied to find out which type they are.
If urate crystals can be seen in the fluid under a microscope, you have gout.
If we examine alloys on the tin side we shall find large crystals of tin embedded in the same complex.
If you prefer to have a more modern Mehndi that will not last beyond your wedding day, the trend today is to use colored glitter gels, crystals and exotic designs that will only last one day.
If your cat likes to vigorously dig in the litter box and kicks the litter around a lot, you may find litter crystals in his eyes.
In 1821 he was busy with electrical experiments and in 1822 with investigations of the fluids contained in the cavities of crystals in rocks.
In 1822 Wollaston examined a specimen of those beautiful copper-like crystals which are occasionally met with in iron-furnace slags, and declared them to be metallic titanium.
In addition to the above gaseous rectifiers of oscillations it has been found that several crystals, such as carborundum (carbide of silicon), hessite, anastase and many others possess a unilateral conductivity and enable us to rectify trains of oscillations into continuous currents which can affect a telephone.
In addition to the reddish or brownish argillaceous matrix it contains fresh or decomposed crystals of volcanic minerals, such as felspar, augite, hornblende, olivine and pumiceous or palagonitic rocks.
In an external snow making system, the compressed air and water are mixed outside of the snow gun to form snow crystals.
In Britain the brine is so pure that, keeping a small stream of it running into the pan to replace the losses by evaporation and the removal of the salt, it is only necessary occasionally (not often) to reject the mother-liquor when at last it becomes too impure with magnesium chloride; but in some works the mother-liquor not only contains more of this impurity but becomes quite brown from organic matter on concentration, and totally unfit for further service after yielding but two or three crops of salt crystals.
In crystals the rotary property appears to be sometimes inherent in the crystalline arrangement of the molecules, as it is lost on fusion or solution, and in several cases belongs to enantiomorphous crystals, the two correlated forms of which are the one right-handed and the other left-handed optically as well as crystallographically, this being necessarily the case if the property be retained when the crystal is fused or dissolved.
In mineral veins and lodes crystallized quartz is usually the most abundant gangue mineral; the crystals are often arranged perpendicular to the walls of the lode, giving rise to a "comby" structure.
In most European countries a tax is laid on salt; and the coarser as well as the finer crystals are therefore often dried so as not to pay duty on more water than can be helped.
In one case (represented by the point A in the figure) the solid which freezes out is a conglomerate of crystals of the compound with those of antimony, in the other case C with those of copper.
In Oxford county tourmaline, spodumene (or kunzite) and beryl occur, the tourmaline crystals being notably large and beautiful.
In size they vary between wide limits, from minute sparkling points encrusting rock surfaces and often so thickly clustered together as to produce a drusy effect, to large single crystals measuring a yard in length and diameter and weighing half a ton.
In the amorphous state it is a dull green, almost infusible powder, but as obtained from chromium oxychloride it is deposited in the form of dark green hexagonal crystals of specific gravity 5 2.
In the case of this pair of metals, or indeed of any metallic alloy, we cannot see the crystals forming, nor can we easily filter them off and examine them apart from the liquid, although this has been done in a few cases.
In the other pyro-electric crystals above mentioned, Hatly detected the same deviation from the rules of symmetry in their secondary crystals which occurs in tourmaline.
In this case the crystals are seen as small bumps near the joints or on the outer side of the ear called tophi.
In this way a mixture of the two asparagines was obtained, which were separated by picking out the hemihedral crystals.
Include a large mug, tea or coffee, bath bubbles or crystals, a loofa and a bath pillow.
Inclusions are internal defects such as foreign material crystals, another diamond crystal, or structural imperfections like tiny cracks.
Instead of one large silicon crystal, multiple smaller crystals make up polycrystalline panels.
Instead, the HTS crystals (made from yttrium barium copper oxide) react individually when they approach the rotor 's permanent magnets.
Into such blocks, charged with salt crystals and thoroughly dried, fresh water was then passed, and precisely the converse process took place.
Iodine dissolves in an aqueous solution of the salt to form a dark brown liquid, which on evaporation over sulphuric acid gives black acicular crystals of the tri-iodide, K1 3.
Iron dissolves in a solution of sulphur dioxide in the absence of air to form ferrous sulphite and thiosulphate; the former, being less soluble than the latter, separates out as colourless or greenish crystals on standing.
Is he or she prone to any urinary tract issues, crystals or kidney stones?
It also possesses a splendid purple Here, the large dark masses are the silver or silver-rich substance that crystallized above the eutectic temperature, and the more minute black and white complex represents the eutectic. It is not safe to assume that the two ingredients we see are pure silver and pure copper; on the contrary, there is reason to think that the crystals of silver contain some copper uniformly diffused through them, and vice versa.
It consists of colourless granular crystals freely soluble in water and having an alkaline reaction.
It contains harmless crystals which expand when submerged beneath the water.
It contains, in addition to tannin, a peculiar principle called larixin, which may be obtained in a pure state by distillation from a concentrated infusion of the bark; it is a colourless substance in long crystals, with a bitter and astringent taste, and a faint acid reaction; hence some term it larixinic acid.
It crystallizes in large pink crystals, the colour of which is probably due to the presence of a small quantity of manganic sulphate or of a cobalt sulphate.
It crystallizes in the cubic system, and well-developed crystals are of common occurrence; the usual form is the cube or the cubo-octahedron (fig.).
It crystallizes in the cubic system, but the crystals are often flattened, elongated, rounded or otherwise distorted.
It forms black lustrous crystals, or when quickly condensed, a dark green crystalline powder.
It forms colourless crystals which are soluble in water and decompose on heating, with the formation of nitrogen.
It forms dark blue prismatic crystals containing 3, 4, or 6 molecules of water according to the temperature of crystallization.
It forms large colourless hexagonal crystals.
It forms monoclinic crystals which are very soluble in water.
It forms monosymmetric crystals which by boiling with water yield amidosulphonic acid.
It forms rhombic crystals possessing a sweet taste.
It forms small crystals, showing a brilliant green reflex, and is soluble in water and alcohol with formation of a deep red solution.
It forms with silver nitrate the yellowish green solid, Ag 2 S AgNO 3, and with silver sulphate the orange-red powder, Ag 2 S Ag 2 SO 4 Silver sulphate, Ag 2 SO 4, is obtained as white crystals, sparingly soluble in water, by dissolving the metal in strong sulphuric acid, sulphur dioxide being evolved, or by adding strong sulphuric acid to a solution of the nitrate.
It forms yellow crystals soluble in water; the aqueous solution on standing gradually depositing a basic salt.
It has ammonia blocking chemicals combined with baking soda crystals.
It is a dark yellow powder, which fuses at a high temperature, the liquid on cooling depositing shining tabular crystals; at a white heat it loses oxygen and yields the monoxide.
It is a soft, flocculent powder, which on sublimation forms transparent, monoclinic crystals.
It is a straw-coloured solid, which by fusion under pressure gives prismatic crystals.
It is an amorphous white powder; but it may also be obtained in crystals isomorphous with cassiterite by heating the amorphous form with borax to a very high temperature.
It is caused by uric acid crystals being deposited in the joints.
It is continued until the contents of the pan have been coverted into a thick paste of small crystals of monohydrated sodium carbonate, permeated by a mother-liquor which is removed by draining on perforated plates or by a centrifugal machine, and is always returned to the pans.
It is deliquescent, and readily soluble in water, from which it separates on concentration in crystals of composition BeC1 2.4H 2 0.
It is found that in reducing the juice of these two qualities to syrup, fit to pass to the vacuum pans for cooking to crystals, the total amount of evaporation from the degraded j uice is about half that required from the normal juice produced by double crushing.
It is practically insoluble in water, and is only very slightly soluble in dilute acids; it is soluble to some extent, when freshly prepared, in hot concentrated sulphuric acid, and on cooling the solution, crystals of composition BaSO 4 H 2 SO 4 are deposited.
It is probable that all the alloys of compositions between B and D, when they begin to solidify, deposit crystals of the compound; the lower eutectic B probably corresponds to a solid complex of mercury and the compound.
It is purified by redissolving and crystallization, and is sold either in the state of crystals or finely ground.
It is readily soluble in water, and on evaporation in a vacuum over caustic lime it deposits colourless, rhombohedral crystals of 2KHS.H 2 0.
It isn't until small dirt particles invade the clouds that the ice crystals become heavy enough to accumulate and fall to the ground as snow.
It must also be remembered that insulin protamine crystals dissolve in an acid pH range.
It occurs as large octahedral crystals often with rounded edges, and as granular masses.
It occurs in all degrees of purity, from that of mere salty clay to that of the most transparent crystals.
It occurs in drusy crusts composed of minute trigonal crystals.
It occurs in small yellowish crystals, which are turned red by exposure to light or air.
It readily dissolves in ammonia, the solution, on evaporation, yielding rhombic crystals of 2AgC1.3NH 3; it also dissolves in sodium thiosulphate and potassium cyanide solutions.
It sometimes separates with crystals of a solute as " benzene of crystallization," as for example with triphenylmethane, thio-p-tolyl urea, tropine, &c.
It was in this way that the rotary property of certain biaxal crystals was first established by Pocklington.
It was widespread and unidentified, all the more perplexing because of its tendency to form highly distinctive euhedral tetragonal crystals.
It will trap some warm air around the plant and prevent frost crystals from accumulating on the leaves.
Jacob's Cavern (q.v.), near Pineville, McDonald county, disclosed on exploration skeletons of men and animals, rude implements, &c. Crystal Cave, near Joplin, Jasper county, has its entire surface lined with calcite crystals and scalenohedron formations, from I ft.
Julia Bell Personalized wedding invitations and co-ordinated stationery using photographic images, crystals and semi-precious stones.
Lace, beading, shimmer and the glint of crystals can only begin to describe this line of girls' dresses.
Light Fantastic - The Laserpod an ultramodern marriage of lasers, crystals, LEDs and craftsmanship that produces an awe-inspiring lightshow.
Light snow had begun to fall—tiny crystals hardly visible in the light of the lamp across the street.
Litter crystals are not flushable and not biodegradable.
Living matter is a mixture of substances chiefly dissolved in water; the comparison with the crystals has led to a supposed distinction in the mode of growth, crystals growing by the superficial apposition of new particles and living substance by intussusception.
Long alkyl chain length (C n) materials such as [C 16 mim] + based salts form stable smectic liquid crystals.
Madagascar yields sapphires generally of very deep colour, occurring as rolled crystals.
Many deposits of limonite have been found, on being worked, to pass downwards into ferrous carbonate; and crystals of chalybite converted superficially into limonite are well known.
Many of the crystals are parti-coloured, the blue being distributed in patches in a colourless or yellow stone; but by skilful cutting, the deep-coloured portion may be caused to impart colour to the entire gem.
Many peculiarities of the growth of crystals are well illustrated by the mineral quartz.
Many people like to use litter crystals or brands of cat litter that integrate crystals into the cat litter.
Many vets choose to do this by providing your cat with a prescription diet designed to keep urine acidity up so the crystals don't have the opportunity to form.
Many, but not all, people with osteoarthritis have calcium pyrophosphate crystals in their osteoarthritic joint cartilage.
Materials used include pearls, Swarovski crystals, gemstone beads, and more.
Matthiessen and Bose obtained large crystals of the alloy Au 2 Sn 5, having the colour of tin, which changed to a bronze tint by oxidation.
Mention may be made of the brilliant black crystals from Alston Moor in Cumberland, St Agnes in Cornwall and Derbyshire.
Methods depending on the free suspension of the solid in a liquid of the same density have been especially studied by Retgers and Gossner in view of their applicability to density determinations of crystals.
Miniature real pumpkins decorated with crystals or glitter to blend a Cinderella theme with a fall wedding.
Mispickel occurs in metalliferous veins with ores of tin, copper, silver, &c. It is occasionally found as embedded crystals, for example, in serpentine at Reichenstein, Silesia.
Modern tiaras come with a wide variety of accents -- peals, crystals, semi-precious or colored stones, gold, silver -- remember to choose something you love and makes you feel beautiful!
Moseley, shortly after the discovery of the diffraction of X-rays by crystals, set to work to examine the X-ray spectrum of a number of elements each of which he made in turn the target of an X-ray tube.
Most people tell you to hand wash the fleece in the bath with mild soap or soda crystals.
Native silver occurs with the copper, in some cases embedded in it, like crystals in a porphyry.
None of these rocks contain large crystals of feldspar, or have the harsh fracture peculiar to trachyte.
Now for why the ice crystals remain in a vertical plane.
Numerous other faces have been observed on crystals of quartz, but they are of rare occurrence.
Numerous other substances are also found in the cytoplasm, such as tannin, fats and oil, resins, mucilage, caoutchouc, guttapercha, sulphur and calcium oxalate crystals.
Obtain some silica gel crystals which are available from craft shops.
Occasionally monoclinic crystals are obtained by crystallizing from a strong solution.
Of other papers in which he dealt with this and kindred branches of physics may be mentioned "Observations with a Rigid Spectroscope," "Heating of a Disc by Rapid Motion in Vacuo," "Thermal Equilibrium in an Enclosure Containing Matter in Visible Motion," and "Internal Radiation in Uniaxal Crystals."
Of these the chief are Poole's Hole, a vast stalactite cave, about half a mile distant; Diamond Hill, which owes its name to the quartz crystals which are not uncommon in its rocks; and Chee Tor, a remarkable cliff, on the banks of the Wye, 300 ft.
Often our competitors use very impure ' tough pitch ' copper, which has about 1500 crystals or grains in each foot.
On extending his inquiry to other aelotropic crystals he observed a similar variation, and was thus led, in 1825, to the discovery that aelotropic crystals, when heated, expand unequally in the direction of dissimilar axes.
On heating, the crystals lose water, swell up, and give the anhydrous sulphate, which, on further heating, gives alumina.
On the addition of concentrated sulphuric acid to a cold saturated solution of the salt, red crystals of chromium trioxide, Cr03, separate (see Chromium), whilst when warmed with concentrated hydrochloric acid and a little water, potassium chlorochromate is produced.
On the other hand the cooling must not be carried too far, for in this case the crystals of sodium bicarbonate become so fine that the muddy mass is very difficult to filter.
One of the bestknown anatomical characteristics of the genus is the occurrence of numerous spindle-shaped or branched fibres with enormouslythickened walls studded with crystals of calcium oxalate.
Osteoarthritis with crystals is sometimes called ' chronic pyrophosphate arthritis '.
Others have hollow or funnel-shaped ends and are constricted at the middle like a dice cup. In some rocks small rod-like microlites are grouped together in a regular way to form growths which resemble fir branches, fern leaves, brushes or networks, in the same manner as minute needles of ice produce star-like snow crystals or the frost growths on a window pane.
Owing to the softness of the metal, large crystals are rarely well defined, the points being commonly rounded.
People have even snapped pictures of crystals right through the eyepiece using camera phones and the results are quite presentable.
Pete arranged some photographs of the passage profile and the selenite crystals on the mud floor.
Phosphorus tetroxide, P204, was obtained by Thorpe and Tutton by heating the product of the limited combustion of phosphorus in vacuo as a sublimate of transparent, highly lustrous, orthorhombic crystals.
Plate, singly oriented column and Parry column crystals all help light it.
Potassium aluminate, K 2 Al 2 0 4, is obtained in solution by dissolving aluminium hydrate in caustic potash; it is also obtained, as crystals containing three molecules of water, by fusing alumina with potash, exhausting with water, and crystallizing the solution in vacuo.
Potassium ferric sulphide, K2Fe2S4, obtained by heating a mixture of iron filings, sulphur and potassium carbonate, forms purple glistening crystals, which burn when heated in air.
Potassium sulphide, K 2 S, was obtained by Berzelius in pale red crystals by passing hydrogen over potassium sulphate, and by Berthier as a flesh-coloured mass by heating the sulphate with carbon.
Potassium sulphite, K 2 S0 3, is prepared by saturating a potash solution with sulphur dioxide, adding a second equivalent of potash, and crystallizing in a vacuum, when the salt separates as small deliquescent, hexagonal crystals.
Psychic Consultation Readings, Tarot, runes crystals, crystal ball, Egyptian tablets, Druid Animal cards, Druid tree stave.
Quartz occurs as a primary and essential constituent of igneous rocks of acidic composition such as granite, quartz-porphyry and rhyolite, being embedded in these either as irregularly shaped masses or as porphyritic crystals.
Quinine of commerce is the neutral sulphate,C20H24N202 H2S04.8H20, which occurs in commerce in the form of very light slender white acicular crystals.
Reusch has shown that a packet of identical inactive plates arranged in spiral fashion gives an artificial active system, and the behaviour of certain pseudosymmetric crystals indicates a formation of this character.
Rhombic crystals on a crust of tiny calcite crystals covering basalt matrix.
Rumor has it the fit is incredible, and the embellishments include Swarovski crystals, interesting figure-flattering lines, and hand-sewn detail.
Second, Lysol doesn't do much for urine crystals imbedded in the carpet and padding.
Several of these arise naturally as crystals, and the truncated icosahedron occurs in real life as a football.
Silica Crystals - These crystals are very absorbent and absorb odors better than the other types of litter.
Silica crystals are also reported to reduce litter tracking, which is very common with clay and other litter types.
Silica gel crystals are popular because they absorb a great deal of liquid, and make it possible for cat owners to "scoop out" urine when they scoop feces from the litter box.
Silica litter is also known as crystal litter, and these crystals are comprised of the solidified silica gel.
Slightly simpler but still sparkling designs are at Just Jen, where you can create a custom shirt choosing from 22 colored crystals.
Small crystals are formed by passing ferric chloride vapour over heated lime.
Snow Quartz crystals have been used since ancient times as powerful healing objects and meditation tools, and to make medicinal elixirs.
Sodium chromate, Na 2 CrO 4.10H20, forms pale yellow crystals isomorphous with hydrated sodium sulphate, Na2S04.10H20.
Some of the finest crystals occur in the lead-veins of the Carboniferous Limestone series in the north of England, especially at Weardale, Allendale and Alston Moor.
Sometimes, usually the result of sudden cold, clear tartrate crystals appear.
Still further evaporation causes these crystals to effloresce and pass into the anhydrous salt.
Subsequently he studied the expansion of solids by heat, and applied the phenomena of interference of light to the measurement of the dilatations of crystals.
Such sheet or wire then remains flexible after cooling, the originally only loosely cohering crystals having got intertwisted and forced into absolute contact with one another - an explanation supported by the fact that rolled zinc has a somewhat higher specific gravity (7.2) than the original ingot (6.9).
Such structures are known as mixed crystals or solid solutions.
Such twins may therefore be mistaken for simple crystals unless they are attentively studied; but the twinning is often made evident by the presence of irregularly bounded areas of the duller z faces coinciding with the brighter r faces.
Suitable provision is made for the egress of syrup from the massecuite in the cells when undergoing purging in the centrifugal; and the washing of the crystals can be aided by the injection of refined syrup and completed by that of " clairce."
Superimposed sections of rightand left-handed quartz, as may sometimes be present in sections of twinned crystals, exhibit Airy's spirals in the polariscope.
Take 1 oz of Manila copal crystals and 1/2 oz of orange shellac flakes and grind to a fine powder.
Thallic chloride, T1C1 3, is obtained by treating the monochloride with chlorine under water; evaporation in a vacuum gives colourless deliquescent crystals of T1C1,.H20.
Thallic sulphate, T1 2 (SO 4) 3.7H 2 O, and thallic nitrate, Tl(NO 3) 3.8H 2 0, are obtained as colourless crystals on the evaporation of a solution of the oxide in the corresponding acid.
Thankyou wine glass charms - Gold or silver tone high quality pewter wine glass charm carrying 4 Swarovski crystals in your choice of colors.
That this is not a necessary characteristic of light was discovered by Christian Huygens, who found that, whereas a stream of sunlight in traversing a rhomb of spar in any but one direction always gives rise to two streams of equal brightness, each of these emergent streams is divided by a second rhomb into two portions having a relative intensity dependent upon the position with respect to one another of the principal planes of the faces of entry into the rhombs - the planes through the axes of the crystals perpendicular to the refracting surfaces.
The 20 40 60 80 100 liquid then becomes saturated with B also, and, if inoculated with B crystals, will deposit B alongside of A, till the whole mass is solid.
The 22nd series (1848) is occupied with the discussion of magnetocrystallic force and the abnormal behaviour of various crystals in a magnetic field.
The acid, auricyanic acid, 2HAu (CN) 4.3H20, is obtained by treating the silver salt (obtained by precipitating the potassium salt with silver nitrate) with hydrochloric acid; it forms tabular crystals, readily soluble in water, alcohol and ether.
The actual values of the topic parameters can then readily be expressed in terms of the elements of the crystals (the axial ratios and angles), the density, and the molecular weight (see Groth, Physikalische Krystallographie, or Chemical Crystallography).
The best crystals are the brilliant, blackish-brown prisms with terminal pyramidal planes (fig.) from the Restormel iron mines at Lostwithiel, and the Botallack mine at St Just in Cornwall.
The best glaziers' diamonds are chosen from crystals such that a natural curved edge can be used.
The boiled salts, the crystals of which are small, are formed in a medium constantly agitated by boiling.
The boulder is a crystalline rock consisting of pyroxene (chrome-diopside), garnet, and a little olivine, and is studded with diamond crystals; a portion of it is preserved in the British Museum (Natural History).
The cadmium sulphate solution must be saturated and have free crystals of the salt in it.
The caliche is worked up in loco for crude nitrate by extracting the salts with hot water, allowing the suspended earth to settle, and then transferring the clarified liquor, first to a cistern where it deposits part of its sodium chloride at a high temperature, and then to another where, on cooling, it yields a crop of crystals of purified nitrate.
The characteristic companion-cells of Angiosperms are represented by phloem-parenchyma cells with albuminous contents; other parenchymatous elements of the bast contain starch or crystals of calcium oxalate.
The characters as given above apply more particularly to crystals of quartz, but in the various massive and compact varieties the material may be quite different in general appearance.
The choice of the size of the crystals to be produced in a given pan depends upon the market for which they are intended.
The clear vat-liquor, if allowed to cool down to ordinary temperature, would separate out part of the sodium carbonate in the shape of decahydrated crystals.
The clouds contain ice crystals which refract the light to give the halo effect.
The Coastal Living Starfish Knob with Swarovski Crystals is a great choice.
The colors appear under the polarized light microscope that earth scientists use to identify rock crystals.
The company claims that these crystals essentially overlap each other when applied, forming a protective barrier while still allowing the skin to breathe.
The conditions may then remain those of equilibrium along the curve f E, but before reaching f the solution may become supersaturated with B and deposit B crystals spontaneously.
The crystallized sugar from the vacuum pan has now to be separated from the molasses or mother-liquor surrounding the crystals.
The crystals are collected, washed, pressed and recrystallized, whereby the impurities are easily removed.
The crystals are isomorphous with mispickel, but only rarely are they distinctly developed and simple (fig.).
The crystals are orthorhombic, with angles similar to those of marcasite; they are often prismatic in habit, and the prism M is usually terminated by the deeply striated faces of an obtuse dome r.
The crystals are proposed to have 20% lower dielectric than water.
The crystals are purified by recrystallization from water.
The crystals are sometimes polysynthetic, a large octahedron, e.g., being built up of small cubes.
The crystals belong to the monoclinic system, and it is a curious fact that in habit and angles they closely resemble pyroxene (a silicate of calcium, magnesium and iron).
The crystals belong to the orthorhombic system, and have usually a pyramidal habit (fig.), but may be sphenoidal or tabular.
The crystals can absorb more than the traditional clumping clay litter, and they absorb odors as well.
The crystals look like antimony, and are brittle, and so hard as to scratch glass and rubies; their specific gravity is 4.25.
The crystals may also help the hornets to navigate in the dark chambers.
The crystals of octahedral borax fuse more easily than those of the prismatic form and are less liable to split when heated, so that they are preferable for soldering or fluxing.
The crystals of prismatic habit represented in figs.
The crystals possess a perfect cleavage parallel to the plane of symmetry and are usually bladed, in habit; they are soft (H= 2), flexible and sectile.
The crystals so obtained are very unstable and decompose rapidly with evolution of carbon dioxide.
The crystals, if eaten, may cause an intestinal blockage.
The curing or preparation of the crystals for the market by separating the molasses from them.
The deposits formed by evaporation from these lakes and marshes or salines, are mixtures of borates, various alkaline salts (sodium carbonate, sulphate, chloride), gypsum, &c. In the mud of the lakes and in the surrounding marshy soil fine isolated crystals of borax are frequently found.
The diamonds of this district are noted for their purity and lustre, and are generally associated with other crystals - garnets, agates, quartz and chalcedonies.
The dioxybromide forms light red crystals or a yellow powder; it volatilizes at a red heat, and is not acted upon by water.
The disease is caused by the deposition of sodium urate (uric acid) crystals in the joints.
The drained crystals are dried and heated to redness in a reverberatory furnace; when " finished," the mass is of an impure white or light yellow colour and is sold as ordinary " soda-ash."
The easiest way to change litter is to add a small amount of the new litter, in this case crystals, in the litter to which the cat is accustomed.
The empty planter has a reservoir to capture rainwater in the base, gel crystals are added along with the compost.
The examination of dispersion of the optic axes in biaxal crystals (see Refraction, § Double) may be conveniently made with a plate perpendicular to the acute bisectrix placed in the diagonal position for light of mean period between a crossed polarizer and analyser.
The excess held temporarily in solution is then deposited in crystals of CaS04.2H20.
The faces s are striated parallel to their edge of intersection with r; this serves to distinguish r and z, and thus, in the absence of x faces, to distinguish leftor right-handed crystals.
The facility will be rapidly tuneable allowing data to be collected from small, weakly diffracting crystals over a wide range of wavelengths.
The felspathoid minerals, sodalite, haiiyne and nosean, which crystallize in isometric dodecahedra, are very frequent components of the phonolites; their crystals are often corroded or partly dissolved and their outlines may then be very irregular.
The filtered liquors, being collected in the various service tanks according to their qualities, are drawn up into the vacuum pans and boiled to crystals.
The filtrate on cooling deposits crystals of potassium zirconofluoride, K 2 ZrF 6, which are purified by crystallization from hot water.
The firstmentioned process consists of charging and feeding the vacuum pan with the richest syrup, and then as the crystals form and this syrup becomes thereby less rich the'pan is fed with syrup of lower richness, but still of a richness equal to that of the mother-liquor to which it is added, and so on until but little mother-liquor is left, and that of the poorest quality.
The force from the ice crystals under the soil pushes soil up and in turn, dislodges the plant's roots.
The four phases are (I) crystals of salt, (2) crystals of ice, (3) a saturated solution of the salt in water, and (4) the vapour, which is that practically of water alone, since the salt is non-volatile at the temperature in question.
The fracture is distinctly crystalline; large crystals, either regular dodecahedra or octahedra, may be obtained by crystallization from carbon bisulphide, sulphur chloride, &c., or by sublimation.
The free acid forms dark red deliquescent crystals and is obtained by decomposing the silver salt with hydrochloric acid, or the barium salt with dilute sulphuric acid.
The Helena crystals are of tabular habit, being composed of the basal pinacoid with a very short hexagonal prism, whilst at Yogo Gulch many of the crystals affect a rhombohedral habit.
The hexachloride, WC1 6, is obtained by heating the metal in a current of dry chlorine in the absence of oxygen or moisture, otherwise some oxychloride is formed; a sublimate of dark violet crystals appear at first, but as the hexachloride increases in quantity it collects as a very dark red liquid.
The hydrated chloride, MnCl2.4H2O, is obtained in rose-red crystals by dissolving the metal or its carbonate in aqueous hydrochloric acid and concentrating the solution.
The ice crystals are in cirrus clouds, seen in the photographs above lower clouds behind which the sun set.
The ice crystals in frozen fruit help make the drinks thick anddistribute the other ingredients more evenly.
The inflammation is caused by urate crystals being shed into the joints.
The Jane Iredale mineral collection is "micro-pulverized" using a technological process that forms flat, microscopic crystals.
The less acidic a cat's urine, the more susceptible he/she is to forming stones or crystals in the urinary tract.
The litter is made of high quality clay and crystals.
The magnificent crystals are in shades from blue tho to light aqua and come in various shapes including drops, leaves and flowers.
The majority of minerals are found commonly in masses which can with difficulty be recognized as aggregates of crystalline grains, and occur comparatively seldom as distinct crystals; but the diamond is almost always found in single crystals, which show no signs of previous attachment to any matrix; the stones were, until the discovery of the South African mines, almost entirely derived from sands or gravels, but owing to the hardness of the mineral it is rarely, if ever, water-worn, and the crystals are often very perfect.
The moisture from the clay, percolating through the mass of sugar, washes away the adhering molasses and leaves the crystals comparatively free and clear.
The monoxychloride, WOC14, is obtained as red acicular crystals by heating the oxide or dioxychloride in a current of the vapour of the hexachloride, or from the trioxide and phosphorus pentachloride.
The most commonly observed cause of FLUTD is the formation of gravel, small stones or crystals called uroliths.
The new devices are based on the physics of photonic bandgap crystals.
The nitrate, Al(N03)3, is obtained as deliquescent crystals (with 81120) by evaporating a solution of the hydroxide in nitric acid.
The nose is an appealing confection of pink marshmallows and the sugary mixture known as rainbow crystals.
The ordinary hydrated variety forms quadratic crystals and behaves as a strong base.
The picture shows the crystallographic lattice orientation of the germanium FFC crystals.
The plain is almost perfectly level, covered with snowy-white saline crystals, and contains many salt springs.
The polarizing action of such crystals is due to the unequal absorption that they exert on polarized streams. Thus a plate of tourmaline of from I mm.
The precise mechanism of the process of setting of Portland cement is not known with certainty, but it is probably analogous to that of the setting of plaster of Paris, consisting in the dissolution of the compounds produced by hydration while they are in a more soluble form, their transition to a less soluble form, the consequent supersaturation of the solution, and the deposition of the surplus of the dissolved substance in crystals which interlock and form a coherent mass.
The presence of these enclosed impurities impairs the transparency of crystals.
The problem arises because the crystals in the uric acid are insoluble and form a tight bond to any surface they contact.
The process goes on until a relatively small quantity of water has by instalments dissolved and hydrated the 2CaSO 4 H 2 O, and has deposited CaSO 4.2H 2 O in felted crystals forming a solid mass well cemented together.
The reason why two levels are employed is that sometimes crystals are formed by the decomposition of the glass which cause the bubble to stick at different points and so give false readings.
The resulting ice crystals draw moisture out of the plant's leaves, flowers or buds, resulting in wilting, brown spots, or permanent damage.
The revolving band forms the cathode, and at one end makes a rubbing contact with a travelling belt placed at an angle so that the crystals of silver detached thereby from the cathode are conveyed by it from the solution and deposited outside.
The rolled crystals of sapphire occur, with garnet and other minerals, in glacial deposits, and have probably been derived from dykes of igneous rocks, like andesite and lamprophyre.
The secondary phloem contains numerous thick-walled fibres, parenchymatous cells, and large sieve-tubes with plates on the radial walls; swollen parenchymatous cells containing crystals are commonly met with in the cortex, pith and medullary-ray tissues.
The skirt is tiered to give a cascading appearance, and the ruched bodice is adorned with crystals.
The solid alloy consists of crystals of pure tin in juxtaposition with crystals of almost pure lead and bismuth, these two metals dissolving each other in solid solution to the extent of a few per cent only.
The stibonium iodide on treatment with moist silver oxide gives the corresponding tetramethyl stibonium hydroxide, Sb(CH 3)40H, which forms deliquescent crystals, of alkaline reaction, and absorbs carbon dioxide readily.
The stones, however, are good; since they differ somewhat from the Kimberley crystals it is probable that they were not derived from the present pipes.
The sulphate is obtained by dissolving the oxide in sulphuric acid; if the solution be not acid, it separates in pyramidal crystals of composition BeSO 4.4H 2 0, while from an acid solution of this salt, crystals of composition BeS04.7H 2 O are obtained.
The sulphydrate or hydrosulphide, Ca(SH)2, is obtained as colourless, prismatic crystals of the composition Ca(SH) 2.6H 2 O, by passing sulphuretted hydrogen into milk of lime.
The sum of the twin fractions must be 1.0 Twin Data stored by CRYSTALS For a twinned crystal the following equation holds.
The supernatant fluid above the crystals is a saturated solution of iodine.
The symptoms result from an accumulation of uric acid crystals in the joints, causing an intensely painful inflammatory reaction.
The Tertiary strata of Andalusia are specially noteworthy for containing the native silver of Herrerias, which is found in a Pliocene bed in the form of flukes, needles and crystals.
The tetramethyl derivative, amalic acid, C$(CH3)4N407, has been prepared by oxidizing caffeine with chlorine water, and forms colourless crystals which are only slightly soluble in hot water.
The time varies for the unboiled salts from twelve hours to three or four weeks, the larger crystals being allowed a longer time to form, and the smaller ones being formed more quickly.
The two crystals shown in figs.
The two dark arcs at the drawing's base are no doubt colorful infralateral arcs from horizontal column crystals.
The two sloping lines cutting at the eutectic point are the freezing-point curves of alloys that, when they begin to solidify, deposit crystals of lead and tin respectively.
The urate crystals can reactivate when the air is humid, and then he will be drawn back to those spots to soil again.
The uric acid is made up of crystals and salts causing many cat owners to become frustrated when their kitty urinates in an inappropriate place such as the couch, carpet or pile of laundry.
The urine crystals can sink in deep, and even humidity can cause them to emit smells.
The use of multiple-effect evaporation made it possible to raise the steam for all the work required to be done in a well-equipped factory, making crystals, under skilful management, by means of the bagasse alone proceeding from the.
The very beautiful (anhydrous) crystals have the habit of a double six-sided pyramid, but really belong to the rhombic system.
The wealth of crystals is, however, surprising, and these are of endless variety and fantastic beauty.
The website Cat Litter Crystals may prove helpful in comparing the various brands of crystalline cat litter.
Their presence is due to lateral outgrowths of crystals shooting from the side of a growing stalactite, or to deflections caused by currents of air, or to the existence of a diminutive fungus peculiar to the locality and designated from its habitat Mucor stalactitis.
There are perfect cleavages parallel to the rhombohedral faces, and the crystals exhibit a strong negative double refraction, like calcite.
There are some drawbacks to litter crystals.
There are, however, certain crystals that with a moderate thickness give an emergent stream of light that is more or less completely polarized.
There is reason to suppose that the change described takes place in two stages, the gypsum first forming orthorhombic crystals and then crystallizing in the monosymmetric system.
There the reaction mentioned above takes place, and Owing to the concentration of the liquid the sodium bicarbonate formed is to a great extent precipitated in the shape of small crystals, forming with the mother-liquor a thin magma.
These crystals are comparatively soluble but nevertheless block the tubule.
These crystals grow steadily, but do not increase in number.
These crystals have a long aspect ratio, and hence are known as tin whiskers.
These crystals may be half an inch to several inches in length; they are usually more or less completely weathered to white mica and kaolin.
These little bubbles eventually had other crystals deposited in them to give white speckles in the basalt.
These might bring a closer resemblance to real crystals which have apparently arbitrary growth features.
These observations accord with the hypothesis that organisms are polyphasic liquid crystals.
These silica crystals are used to make an effective cat litter based on their highly absorbent qualities.
They are composed of crystals of bile-fat, cholesterine.
They form rhombic crystals of a red or brown red colour and are readily decomposed by warm water, with formation of the bichromate.
They found relatively large grains and many small crystals of a mineral called olivine.
They occur, with many other gem-stones, as pebbles or rolled crystals in alluvial deposits of sand and gravel; the gem-gravel being known locally as illam.
This article is titled Snow Crystals, even tho many people would like to call the crystals snowflakes.
This article is titled Snow crystals, even tho many people would like to call the crystals snowflakes.
This halt in the cooling, due to the heat evolved in the solidification of the first crystals that form in the liquid, is called the freezingpoint of the mixture; the freezing-point can generally be observed with considerable accuracy.
This occurs as cubic crystals of what is often referred to as Fool 's Gold.
This occurs as cubic crystals of what is often referred to as Fool's Gold.
This phenomenon is connected with the symmetry of the crystals, and is also shown by the crystals of certain other substances in which there are neither planes nor centre of symmetry.
This process goes on until the state of the remaining liquid is represented by the point C. Now crystals of B begin to form, simultaneously with the A crystals, and the composition of the remaining liquid does not alter as the solidification progresses.
This should help remove any remaining crystals that would draw her back to the spots with their scent.
This variety forms a passage to the species glaucodote, (Co,Fe)AsS, which is found as well-developed orthorhombic crystals in copper ore at Hakansboda in Ramberg parish, Vestmanland, Sweden.
This view had currency until 1849, when Wohler showed that the crystals are a compound, Ti(CN)2.3T13N2, of a cyanide and a nitride of the metal.
This year I will be looking at how crystals grow on surfaces of defined topography.
Thorium chloride, ThC1 4, is obtained as white shining crystals by heating a mixture of carbon and thoria in a current of chlorine.
Thus also the crystals already formed come in contact with fresh mother-liquor, and so go on adding to their size.
Thus, for instance, near Nikko in the upper valley of the Daiya-gawa, and in several other places in the neighboring mountains, a granite-porphyry appears with large, pale, flesh-colored crystals of orthoclase, dull triclinic feispar, quartz and hornblende.
Tiaras, combs, clips, or barrettes with flowers, feathers, and crystals are all suitable.
Titanium monoxide, TiO, is obtained as black prismatic crystals by heating the dioxide in the electric furnace, or with magnesium powder.
To examine crystals, especially in converging light, a condenser, movable in the optic axis, is needed above the polarizer.
Try soaking the cushions and mattress with an enzymatic cleanser to eliminate trapped urine crystals.
Tungsten disulphide, W52, is obtained as soft black acicular crystals by the action of sulphur, sulphuretted hydrogen or carbon bisulphide on tungsten.
Twinned crystals are not common, but the presence of polysynthetic twinning is sometimes shown by fine striations running diagonally or obliquely across the cleavage surfaces.
Twinned crystals of quartz are extremely common, but are complex in character and can only be deciphered when the faces s and x are present, which is not often the case.
Two similar transparent uniaxial crystals show the same (principal) extraordinary refractive index, n e.
Using a balloon whisk or fork, whisk the mixture vigorously to break up ice crystals.
Usually crystals are a sign of too many minerals in the cat's diet, and you will be advised to make dietary changes.
Usually polymer crystals take the form of chain folded lamellae.
Usually rose quartz is coarsely crystalline (meaning the crystals are quite large ).
Usually, however, this lower degree of symmetry is not indicated by the faces developed on the crystals.
Vortex Dynamics Dr. A.M. Campbell The project is investigating the role of surface currents in the critical current of BSCCO crystals.
Water filtering down through the rock has deposited calcite, gypsum, baryte and celestine in the cracks, sometimes as well-formed crystals.
We also found some iron pyrites associated with mica schist 's, the crystals were moderately good.
We also sell rare crystals, minerals, and gems and gem elixirs and jewelry made from such stones.
We can sometimes obtain definite compounds in a pure state by the action of appropriate solvents which dissolve the rest of the alloy and do not attack the crystals of the compound.
We grow layers of crystals containing indium, phosphorus, gallium and arsenic on wafers of indium phosphide.
We have used molecular modeling methods to study the interfaces between calcite crystals and monolayers of stearic acid.
We have world renowned experts in the areas of liquid crystals, energy storage materials, new zeolite based pigments and superconducting materials.
We thus learn that the bronzes referred to above, although chemically uniform when solid, are not so when they begin to solidify, but that the liquid deposits crystals richer in copper than itself, and therefore that the residual liquid becomes richer in tin.
When crystallized from water, crystals belonging to the orthorhombic system, and having a prism angle of 61 0 10', are obtained; they are often twinned on the prism planes, giving rise to pseudo-hexagonal groups resembling aragonite.
When dissolved in water it yields some NaOH and H202; on crystallizing a cold 'solution Na202.8H20 separates as large tabular hexagonal crystals, which on drying over sulphuric acid give Na 2 0 2.2H 2 0; the former is also obtained by precipitating a mixture of caustic soda and hydrogen peroxide solutions with alcohol.
When finely ground these crystals yield a brownish red powder which dissolves slowly in acids, the most effective solvent being a boiling mixture of 8 parts of sulphuric acid and 3 of water.
When heated in a current of hydrogen it sublimes in the form of brilliant prismatic crystals.
When this is slow you get bigger igneous rock crystals from magma.
When this process is complete the temperature rises, and we pass along a new curve giving the equilibrium between anhydrous crystals, solution and vapour.
Whenever the crystals come in contact with any form of dampness, moisture or humidity, they are reactivated once again releasing their pungent odors.
Which along with his crystals in who was excited possess long-lived metallic phosphorescence.
With 10% of gold present the amalgam is fluid, and with 12.5% pasty, while with 13% it consists of yellowish-white crystals.
With all the important work he accomplished in physics - the enunciation of Boyle's law, the discovery of the part taken by air in the propagation of sound, and investigations on the expansive force of freezing water, on specific gravities and refractive powers, on crystals, on electricity, on colour, on hydrostatics, &c. - chemistry was his peculiar and favourite study.
With concentrated nitric acid, in the presence of cold concentrated sulphuric acid, it yields trinitro-resorcin (styphnic acid), which forms yellow crystals, exploding violently on rapid heating.
Wood has studied the iridescent colours seen when a precipitate of potassium silicofluoride is produced by adding silicofluoric acid to a solution of potassium chloride, and found that they are due to the same cause, the refractive index of the minute crystals precipitated being about the same as that of the solution, which latter can be varied by dilution.
Working in Oxford she used x-ray crystallography, a technique based on the diffraction of x-rays by crystals.
Working in Oxford she used X-ray crystallography, a technique based on the diffraction of x-rays by crystals.
Yellow crystals are found at Kapnik-Banya, near Nagy-Bánya in Hungary.
Yellow crystals are found at Kapnik-Banya, near Nagy-Bánya in Hungary.
You 're mounted on a motor bike and must crush stashes of drugs and collect crystals.
You can choose a prom dress with beads, sequins or crystals that will sparkle in the moonlight or lighting at your prom location.
You can fill them with soap crystals, candy, or potpourri.
You might like to try growing sugar crystals, copper sulfate crystals, sodium silicate crystals, potassium permanganate crystals or iodine crystals.
Your vet may also have some advice about how many meals your cats should receive each day, since feeding can play a direct role in preventing your cats from forming bladder crystals.
Your vet will suggest certain foods to keep the crystals from forming in the future.