A toaster uses almost half as much energy as a full-sized oven.
33
In the early 1960's, Porsche commercially manufactured farm tractors.
24
There's an "anti-smartphone" called John's Phone which can only make and receive calls.
7
To have your picture taken by the very first camera you would have had to sit still for 8 hours!
308
The cigarette lighter was invented before the match.
210
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 small airplane can fly backwards.
75