The force of a suction cup is calculated using F=AP.
15
The Earth's atmosphere weighs about 5.5 quadrillion tons.
108
4.5 pounds of sunlight strike the Earth each day.
27
Forensic scientists can determine a person's sex, age, and race by examining a single strand of hair.
101
Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
According to studies, men change their minds two to three times more often than women.
72
There are more atoms in one teaspoon of water than there are teaspoons of water in the Atlantic Ocean.
13
Pure water (H2O) does not conduct electricity on its own.
46