When glass breaks, the cracks move at speeds of up to 3,000 miles per hour.
423
One human hair can support 3 ounces.
191
The sound you hear when you crack your knuckles is actually the sound of nitrogen gas bubbles bursting.
244
A pipe 2 feet in diameter will allow four times more fluid to pass through it than a pipe 1 foot in diameter.
20
An ounce of platinum can be stretched 10,000 feet.
40
Music is as addictive to the brain as sex and drugs.
27
When glass breaks, the cracks move faster than 3,000 miles per hour.
47