All GPS units sold in the civilian market have to be programmed to deactivate themselves if they detect they are travelling faster than 1200 MPH or are above 60,000 feet in altitude to prevent them being used in intercontinental ballistic missiles.
2
There's an "anti-smartphone" called John's Phone which can only make and receive calls.
7
Technically speaking, crystal glass is actually a Liquid that flows very slowly.
43
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
Kleenex tissues were originally used as filters in gas masks.
46
Castor oil is used as a lubricant in jet planes.
-5
There are only 14 blimps in the world.
69