An airplane mechanic invented Slinky while he was playing with engine parts and realized the possible secondary use for the springs.
12
Castor oil is used as a lubricant in jet planes.
-5
The normal static electricty shock that zaps your finger when you touch a doorknob is usually between 10,000 and 30,000 volts!
60
Jumbo jets use 4,000 gallons of fuel to take off.
19
Kleenex tissues were originally used as filters in gas masks.
46
The life boat was patented in 1845!
29
Super Nintendo and Sega Genesis had an online multiplayer mode.
-2
First four countries to have television: England, the U.S., the U.S.S.R., and Brazil.
47