contrails in A Sentence

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It is called Contrails.

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Bright difference between chemtrails and Contrails.

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When planes fly, they leave behind“Contrails” from the exhaust of their engines.

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4

But what actually causes Contrails, and why don't they always appear behind planes?

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5

These are Contrails, which are artificial water clouds that are made by the passing of a jet engine.

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Those white lines in the sky are called vapor trails or Contrails, and they are the result of aviation fuel being burned.

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So called“chemtrails,” though more technically known as Contrails, first appeared behind planes going all the way back to the earliest days of high altitude flight.

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A similar thing occurs in planes, but thanks to significantly more water vapor, a lot of nucleation sites being expelled, and often all occurring in more extreme temperatures, the Contrails may last for many hours.

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While many scientists correctly hypothesized what caused Contrails once they started popping up around WWI, it wouldn't be until after WWII that a solid theory on exactly what conditions Contrails would form was settled on.

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10

Contrails are created by planes via one of two ways- first, as the airplane passes through the air, it creates areas of low pressure, for instance, above the wings as a byproduct of the wing shape.

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Contrails provide a major problem for military planes trying to go unnoticed, and thus there was great need to figure out what exact atmospheric conditions were likely to produce Contrails, so the military planes could avoid those regions.

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