Gas used in lights
Argon is used to fill the space in most light bulbs. Neon is used in fluorescent signs. Fluorescent lights are filled with mercury gas.
More Science Facts
The smallest transistor is 50-nanometres wide - roughly 1/2000 the width of a human hair.
An atomic clock is accurate to within 1 second in 1,7 million years.
Peanuts are one of the ingredients in dynamite.