![]() Helium is found very commonly in the universe, but not very common on Earth. Superfluid helium has zero viscosity (thickness.) Near absolute zero, liquid helium will crawl along any surface this is called superfluidity.It can only be solidified by applying extreme pressure to liquid helium. Even at absolute zero, helium is still a liquid. ![]() Helium was used to learn that the structure of the atom had a dense nucleus and an electron cloud.Helium is a noble gas, so it doesn't react very easily.Helium is the second most common element in the universe.Helium gets its name from Helios, the Greek god of the sun. It was discovered independently about the same time by P.T. Lockyer noticed a line in sunlight that didn't match any known element and realized it belonged to a new element not found on Earth.Ībout 27 years later, in 1895, Sir William Ramsay discovered helium on Earth in a uranium mineral, cleveite. Each element produces a different spectral pattern of bright lines. He was using a technique (then new) called spectrography, which breaks light into its separate colors. Helium was discovered in the Sun in 1868 by an astronomer, Sir Norman Lockyer. Much of the world's helium is mined in the area. A monument to helium doubles as a time capsule including thousands of items packed in helium in Amarillo, Texas. However, in a plasma state (see below,) it emits a pinkish glow. It is the clearest element, and even in a liquid state (which can only be achieved by either applying great pressure or extreme cold) it is almost completely transparent. Helium is seen on earth as a colorless and odorless gas. What does it look, feel, taste, or smell like? Helium's Atom is very simple
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