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Liquefaction of Gases by Great Soviet Encyclopedia
... the French scientist L. P. Cailletet. Nitrogen and carbon dioxide were liquefied in 1883 by Z. F. Wróblewski and K. Olszewski. Hydrogen was first liquefied in 1898 by J. Dewar, and helium in 1908 by H. Kamerlingh Onnes.An ideal process for the liquefaction of gases is illustrated in Figure 1. Isobar 1–2 corresponds to the cooling of the gas to the start of ...