Iron weighs more after it rusts.
16
Iron weighs more after it rusts.
68
The force of a suction cup is calculated using F=AP.
15
Diamonds can be shattered with a hammer.
-104
Forensic scientists can determine a person's sex, age, and race by examining a single strand of hair.
101
MIT has developed a camera that captures the speed of light at a trillion frames per second.
20
For every gallon of sea water, you get more than a quarter pound of salt.
45