Kleenex tissues were originally used as filters in gas masks.
46
Technically speaking, crystal glass is actually a Liquid that flows very slowly.
43
Windmills always turn anti-clockwise. Except for the windmills in Ireland!
184
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
Scientists in China have built a prototype high-speed maglev train that is theoretically capable of reaching speeds of up to 1,800 mph (2,900 km/h).
1
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