When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199
Sound at the right vibration can bore holes through a solid object.
134
Liquid TIDE laundry detergent glows under a blacklight.
96
In zero gravity, a candle's flame is round and blue.
16
In the 1950s, the US government placed beer next to an atomic bomb blast to determine if it was still drinkable. The result: in the event of a nuclear war, beer is safe to drink!
16
There are more atoms in one teaspoon of water than there are teaspoons of water in the Atlantic Ocean.
13
A cesium atom in an atomic clock beats over nine billion times a second.
43
Optical illusions occur when what the eyes see conflicts with what the brain expects.
75