It looks like you're using an Ad Blocker.
Please white-list or disable AboveTopSecret.com in your ad-blocking tool.
Thank you.
Some features of ATS will be disabled while you continue to use an ad-blocker.
Originally posted by Kalki11
yeah here in central NY it seems every would be sunny day is thwarted by stripes that diffuse into a haze by 2 pm, but it is clear today, no stripes or clouds.
I know this has been debated to death but here is one thing I'd like to ask the debunkers: If the chemtrails are really just exhaust from jet engines THEN WHY HAVE I SEEN THEM SUDDENLY STOP FORMING IN MIDFLIGHT?
When I was a kid the trails of white stuff from airplanes would dissipate at a constant rate, now more often than not I see them linger and diffuse into haze, WTF?
What is a contrail and how does it form?
To answer this question, lets first identify what a contrail is. A contrail is the condensation trail that is left behind by a passing jet plane. Contrails form when hot humid air from jet exhaust mixes with environmental air of low vapor pressure and low temperature. Vapor pressure is just a fancy term for the amount of pressure that is exerted by water vapor itself (as opposed to atmospheric, or barometric, pressure which is due to the weight of the entire atmosphere above you). The mixing occurs directly behind the plane due to the turbulence generated by the engine. If condensation (conversion from a gas to a liquid) occurs, then a contrail becomes visible. Since air temperatures at these high atmospheric levels are very cold (generally colder than -40 F), only a small amount of liquid is necessary for condensation to occur. Water is a normal byproduct of combustion in engines.