The normal static electricty shock that zaps your finger when you touch a doorknob is usually between 10,000 and 30,000 volts!
60
The cigarette lighter was invented before the match.
210
Students at MIT developed a wristband that can regulate your “thermal comfort”, which could possibly eliminate the need for central heating and cooling.
17
Kleenex tissues were originally used as filters in gas masks.
46
Sony researchers have developed a refrigerator that only opens when you smile.
9
The first alarm clock could only ring at 4 a.m.
120
Energy is being wasted if a toaster is left plugged in after use.
21