Sound travels about 4 times faster in water than in air.
408
Cold water weighs more than hot water.
93
Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
At room temperature, the average air molecule travels at the speed of a rifle bullet.
55
At 15 years old, Jack Andraka invented a method of diagnosing pancreatic cancer, thus helping to save the lives of millions of people around the world. It is 168 times faster, 26,000 times cheaper, 400 times more sensitive, and has a 99% success rate.
15
Nylon is made from coal and petroleum.
42
There is a surgical implant being developed that will give you an orgasm at the touch of a button.
20
The force of a suction cup is calculated using F=AP.
15