The boiling point of hydrogen?
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The boiling point of hydrogen at standard pressure is minus 252 degrees (–252.75°C). Has anyone ever seen hydrogen at such a temperature? And how is such a low temperature achieved?
The boiling point of hydrogen is indeed minus 252.75°C, an extremely low temperature that most people hardly ever get the chance to see with their own eyes. However, scientists and engineers can reach this temperature in laboratory or industrial settings. Such ultra-low temperatures are usually achieved by cooling with liquid nitrogen or liquid helium. For example, the temperature is first reduced to minus 196°C using liquid nitrogen, and then further lowered to near absolute zero (minus 273°C) using liquid helium, which allows hydrogen to be liquefied. These devices are generally used in specialized cryogenic laboratories or in the aerospace and energy sectors. .