One 75-watt bulb gives more light than three 25-watt bulbs.
57
Oak trees produce 2,200 acorns in a season, but each acorn only has a 1 in 10,000 chance of becoming an oak tree.
304
A cesium atom in an atomic clock beats over nine billion times a second.
43
Forensic scientists can determine a person's sex, age, and race by examining a single strand of hair.
101
The force of a suction cup is calculated using F=AP.
15
Most dust particles in your house are made from dead skin!
67
Optical illusions occur when what the eyes see conflicts with what the brain expects.
75