The force of a suction cup is calculated using F=AP.
15
Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
Every day, plants convert sunlight into energy equivalent to six times the entire power consumption of human civilization.
9
Balsa wood is classified as a hard wood!
41
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
A cubic yard of air weighs about 2 pounds at sea level.
31
Hot water can freeze faster than cold water.
181
A coal power station puts 100 times more radiation into the air than a nuclear power plant producing the same amount of energy.
7