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The nadir of temperature, and allied problems

1 - Physical properties of liquid and solid hydrogen. 2 - Separation of free hydrogen and other gases from air. 3 - Electric resistance thermometry at the boiling point of hydrogen. 4 - Experiments on the liquefaction of helium at the melting point of hydrogen. 5- Pyroelectricity, phosphorescence. &c.

  • Dewar, James (1842-1923)

The liquifaction of fluorine

  • Moissan, Henry-Ferdinand-Marie (1852-1907)

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