An airplane mechanic invented Slinky while he was playing with engine parts and realized the possible secondary use for the springs.
12
In 1998, Sony accidently sold 700,000 camcorders that had the technology to see through people's clothes.
87
A toaster uses almost half as much energy as a full-sized oven.
33
Castor oil is used as a lubricant in jet planes.
-5
The oil used by jewelers to lubricate clocks and watches costs about $3,000 a gallon.
41
There's an "anti-smartphone" called John's Phone which can only make and receive calls.
7