An airplane mechanic invented Slinky while he was playing with engine parts and realized the possible secondary use for the springs.
12
Technically speaking, crystal glass is actually a Liquid that flows very slowly.
43
The first hard drive available for the Apple II had a capacity of only 5 megabytes.
46
Thomas Alva Edison patented almost 1,300 inventions in his lifetime!
144
To have your picture taken by the very first camera you would have had to sit still for 8 hours!
308
Energy is being wasted if a toaster is left plugged in after use.
21
Kleenex tissues were originally used as filters in gas masks.
46
