Nylon is made from coal and petroleum.
42
The force of a suction cup is calculated using F=AP.
15
Cold water weighs more than hot water.
93
When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199
Dr.Jonas Salk, the man who came up with the cure for polio, didn’t patent the drug. This made the drug more affordable to the general public, and he lost out an an estimated $7 billion dollars for himself.
41
Sound at the right vibration can bore holes through a solid object.
134
Because heat expands the metal, the Eiffel Tower always leans away from the sun.
79
The weight of a carat (200 milligrams), standard unit of measurement for gemstones, is based on the weight of the carob seed.
51