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What is Helium used for?

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Helium can also be used wherever an unreactive atmosphere is needed, e.g., in electric arc welding, in growing crystals of silicon and germanium for semiconductors, and in refining titanium and zirconium metals. It is also used to pressurize the fuel tanks of liquid-fueled rockets. Liquid helium is essential for many low temperature applications (see low-temperature physics ).

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Get more facts and information about helium . Or, view the full encyclopedia entry from The Columbia Encyclopedia, Sixth Edition.

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