For every gallon of sea water, you get more than a quarter pound of salt.
45
Pumice is the only rock that floats on water.
14
A cesium atom in an atomic clock beats over nine billion times a second.
43
Cellophane is not made of plastic. It is made from a plant fiber, cellulose, which has been shredded and aged.
44
The force of a suction cup is calculated using F=AP.
15
If you are locked in a completely sealed room, you will die of carbon dioxide poisoning first before you will die of oxygen deprivation.
117