An airplane mechanic invented Slinky while he was playing with engine parts and realized the possible secondary use for the springs.
12
The electric chair was invented by a dentist!
122
More than a billion transistors are manufactured every second.
-25
The Queen Mary - the grandest vessel of her day - had many of her vital components made by car manufacturer Skoda!
23
First four countries to have television: England, the U.S., the U.S.S.R., and Brazil.
47
There's a phone app called RoboRoach that allows you to remotely control a cockroach through a chip that you to manually implant into the unwitting critter.
10
