An airplane mechanic invented Slinky while he was playing with engine parts and realized the possible secondary use for the springs.
12
Scientists in China have built a prototype high-speed maglev train that is theoretically capable of reaching speeds of up to 1,800 mph (2,900 km/h).
1
The American Automobile Association was founded for the sole purpose of warning motorists of police speed traps!
36
The electric chair was invented by a dentist!
122
A small airplane can fly backwards.
75
Castor oil is used as a lubricant in jet planes.
-5
Jumbo jets use 4,000 gallons of fuel to take off.
19
Sony researchers have developed a refrigerator that only opens when you smile.
9