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Helium is the only substance that can maintain its liquid state at near absolute zero and has no triple point. Solid helium can be obtained only under high-pressure conditions (at T<1.0 K, the pressure must be higher than 2500 kPa to obtain solid HeII or higher than 3000 kPa for HeI).
Helium has the lowest melting and boiling points. It exists as a gas, except under extreme conditions. At temperatures near absolute zero, helium is a fluid; most materials are solid when cooled to such low temperatures. As helium is a non-renewable resource, the Earth is certainly running out of it. Why is the world running out of helium? Helium is the only element on the periodic table which is a non-renewable resource on Earth. Balloons and blimps: Helium is used to fill balloons and blimps because it is a very light gas. Cryogenics: Helium is used in cryogenics to cool objects to very low temperatures. MRI machines: Helium is used in MRI machines to cool the superconducting magnets. Lasers: Helium is used in lasers to produce light. Fiber optic cables: Helium is used in fiber optic cables to transmit light. Weather balloons: Helium is used in weather balloons to lift them into the atmosphere. Soldering: Helium is used in soldering to remove oxygen from the joint. Deep sea diving: Helium is used in deep sea diving to prevent the bends. Gas chromatography: Helium is used in gas chromatography to separate and identify different compounds. Nuclear fusion: Helium is a product of nuclear fusion, which is a potential source of clean energy. Helium is a valuable resource that is used in a variety of applications. It is important to conserve helium and to use it wisely.
Disclaimer: The author of this post, may or may not be a shareholder of any of the companies mentioned in this column. No company mentioned has sponsored or paid for this content. Comments on this forum should never be taken as investment advice. |
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