Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
Sound travels about 4 times faster in water than in air.
408
Marie Curie, the Nobel prize winning scientist who discovered radium, died of radiation poisoning.
57
Nuclear power prevented an average of over 1.8 million deaths between 1971-2009 as a result of lower air pollution from reduced coal usage according to NASA.
5
Diamonds can be shattered with a hammer.
-104
One third of the electricity produced on earth is used to power electric light bulbs!
75
Each day is longer than the previous on by 0.00000002 seconds which is 13 seconds each century!
116