Krypton is a chemical element that can be found in trace amounts in the atmosphere. It is a colorless, odorless and tasteless noble gas that can be isolated by fractionally distilling liquefied air.
Krypton is most commonly used in combination with other rare gases in fluorescent lights, and it can be used in photography. This element gets its name from the Greek word "kryptos," which means "hidden." Krypton was discovered by Sir William Ramsay in 1898 while he was studying liquefied air. He noticed that small amounts of liquid krypton remained after the most combustible components of the liquid air had boiled away. Through further observations and calculations, he deduced that the Earth's atmosphere is only about .0001 percent krypton.
Krypton can be used with other gases to make signs that glow with a green and yellow light. It also has a large number of spectral lines, which makes it play an important role in the formation and production of high-powered gas lasers. Krypton is one of the products of uranium fission, and when krypton has been solidified, it takes on a white and crystalline appearance that features a cube-crystal face. This face is a common feature in all of the noble gases.