An airplane mechanic invented Slinky while he was playing with engine parts and realized the possible secondary use for the springs.
12
Super Nintendo and Sega Genesis had an online multiplayer mode.
-2
There are only 14 blimps in the world.
69
The first alarm clock could only ring at 4 a.m.
120
Jumbo jets use 4,000 gallons of fuel to take off.
19
Mico headphones read your brainwaves and select music based on your state of mind.
7