The first alarm clock could only ring at 4 a.m.
120
The normal static electricty shock that zaps your finger when you touch a doorknob is usually between 10,000 and 30,000 volts!
60
Castor oil is used as a lubricant in jet planes.
-5
Students at MIT developed a wristband that can regulate your “thermal comfort”, which could possibly eliminate the need for central heating and cooling.
17
There are only 14 blimps in the world.
69
Super Nintendo and Sega Genesis had an online multiplayer mode.
-2
The first hard drive available for the Apple II had a capacity of only 5 megabytes.
46
