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
The normal static electricty shock that zaps your finger when you touch a doorknob is usually between 10,000 and 30,000 volts!
60
A toaster uses almost half as much energy as a full-sized oven.
33
The cigarette lighter was invented before the match.
210
Whale oil was used in automobile transmissions as late as 1973.
56
In the early 1960's, Porsche commercially manufactured farm tractors.
24
