Why Do Aircraft Sometimes Leave Vapor Trails?
Why Do Aircraft Sometimes Leave Vapor Trails? Vapor trails form in the sky because the water in the exhaust of aircraft engines condenses when it meets the cool air....
Read MoreWho Invented the Jet Engine? The first flight by a jet-propelled aircraft was made in Germany on august 27, 1939. Its engine was designed by Hans-Joachim von Ohain, who...
Read MoreWhy Do Exhaust Fumes Contain Lead? The lead in exhaust fumes comes from the petrol used to drive the internal-combustion engine. Crude oil straight from the wells is...
Read MoreHow Does a Rocket Engine Work? You can make a simple rocket by filling a toy balloon with air and letting it go. Rockets work on the Newton’s principle that every...
Read MoreWhy Does a Jet Plane Leave a Vapor Trail? The white streaks planes leave behind are actually artificial clouds called contrails, which is a shortened version of the...
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