The first alarm clock could only ring at 4 a.m.
120
More steel in the United States is used to make bottle caps than to manufacture automobile bodies.
55
An airplane mechanic invented Slinky while he was playing with engine parts and realized the possible secondary use for the springs.
12
There's an "anti-smartphone" called John's Phone which can only make and receive calls.
7
In 1998, Sony accidently sold 700,000 camcorders that had the technology to see through people's clothes.
88
The electric chair was invented by a dentist!
122
Whale oil was used in automobile transmissions as late as 1973.
56
