My neighbor is a pilot and he has a ball on a string hanging from the ceiling of his plane. If the ball is on the ceiling and not hanging down, then he knows he’s upside-down.
Charlie Podrebarac
July 10, 2015
Cornelius Noodleman 4 months ago
My neighbor is a pilot and he has a ball on a string hanging from the ceiling of his plane. If the ball is on the ceiling and not hanging down, then he knows he’s upside-down.