There are only 14 blimps in the world.
69
The first alarm clock could only ring at 4 a.m.
120
The oil used by jewelers to lubricate clocks and watches costs about $3,000 a gallon.
41
To have your picture taken by the very first camera you would have had to sit still for 8 hours!
308
An airplane mechanic invented Slinky while he was playing with engine parts and realized the possible secondary use for the springs.
12
The life boat was patented in 1845!
29
Students at MIT developed a wristband that can regulate your “thermal comfort”, which could possibly eliminate the need for central heating and cooling.
17