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15 cze 2023 · Each use for helium contributes significantly towards improving our overall quality of life – from detecting deadly diseases early on through MRI scans, exploring distant galaxies via spacecrafts powered by helium fuel cells, or simply enjoying beautiful views from up high in a hot air balloon ride.
Liquid helium is unique among all elements in that it can reach ultra-cold temperatures, approaching absolute zero (-273.15°C). Research conducted at these low temperatures has led to discoveries in superconductivity that have led to many applications, including the Maglev high-speed train.
27 kwi 2023 · The use of cryogenic liquids, like liquid nitrogen or liquid helium, has allowed us to reach extreme temperatures safely without having to worry about fire hazards associated with higher-temperature processes.
we will concentrate on two cryogens: helium which is the only liquid at very low temperature, and nitrogen for its wide availability and ease of use for pre-cooling equipment and for thermal shielding.
11 wrz 2014 · Liquid helium, because of its low boiling point, is used in many cryogenic systems when temperatures below the boiling point of nitrogen are needed. A convenient way to cool many kinds of apparatus is to submerge them in liquid helium or liquid nitrogen.
26 sie 2023 · Helium is an irreplaceable cryogenic coolant, particularly for temperatures below −256 °C. Its numerous applications span various industries. Helium acts as an inert gas in welding technology to shield the welding point from oxygen infiltration.
