the.com/jet
a controlled explosion strapped to a tube, politely called transportation
means A fast aircraft propelled by engines that expel exhaust at high speed, or more broadly a forceful stream of liquid or gas shooting from a narrow opening.
from From French 'jeter,' to throw or cast, which comes from Latin 'iactare,' to hurl — a frequentative of 'iacere,' to throw. So a 'jet' was originally just something thrown out forcefully, like a spurt of water; only in the 20th century did the word leap onto aircraft, named for the thrown stream of exhaust that shoves them forward. (The black gemstone 'jet' is unrelated — that comes via Latin from the town of Gagas in ancient Lycia.)
- speed
- airliners cruise near 80% the speed of sound
- engine origin
- invented separately by a Brit and a German pre-WWII
- the gem
- black jet is fossilized wood, not stone
- contrails
- those white trails are just frozen exhaust water
- jet lag
- your gut clock revolts faster than your brain
concorde — supersonic passenger jet that flew between london and new york at mach 2, 1969-2003
sr-71 blackbird — us air force reconnaissance jet that flew at mach 3.3, holding the airspeed record since 1974
f-16 fighting falcon — multi-role combat jet first deployed by us military in 1979, used by 25+ countries