A 'jiffy' is an actual unit of time for 1/100th of a second!
66
Brass doorknobs automatically disinfect themselves in about 8 hours.
18
Aluminum used to be more valuable than gold!
84
Iron weighs more after it rusts.
16
The only letter not appearing on the Periodic Table is the letter "J".
180
The weight of a carat (200 milligrams), standard unit of measurement for gemstones, is based on the weight of the carob seed.
51
A coal power station puts 100 times more radiation into the air than a nuclear power plant producing the same amount of energy.
7