An airplane mechanic invented Slinky while he was playing with engine parts and realized the possible secondary use for the springs.
12
The cigarette lighter was invented before the match.
210
Technically speaking, crystal glass is actually a Liquid that flows very slowly.
43
To have your picture taken by the very first camera you would have had to sit still for 8 hours!
308
A toaster uses almost half as much energy as a full-sized oven.
33
Kissenger is a pig-shaped robotic device that lets you kiss someone over the internet.
5
The oil used by jewelers to lubricate clocks and watches costs about $3,000 a gallon.
41