There are only 14 blimps in the world.
69
An airplane mechanic invented Slinky while he was playing with engine parts and realized the possible secondary use for the springs.
12
Sony researchers have developed a refrigerator that only opens when you smile.
9
To have your picture taken by the very first camera you would have had to sit still for 8 hours!
308
The ball on top of a flagpole is called a 'truck'.
24
