An airplane mechanic invented Slinky while he was playing with engine parts and realized the possible secondary use for the springs.
12
A toaster uses almost half as much energy as a full-sized oven.
33
The electric chair was invented by a dentist!
122
To have your picture taken by the very first camera you would have had to sit still for 8 hours!
308
Thomas Alva Edison patented almost 1,300 inventions in his lifetime!
144
Whale oil was used in automobile transmissions as late as 1973.
56
Attics were invented in Attica.
43
Car airbags kill 1 person for every 22 lives that they save.
80