Heike Kamerlingh Onnes

JAN 01 1926

Heike Kamerlingh Onnes

A portrait of Heike Kamerlingh Onnes, the Leiden physicist who liquefied helium in 1908 and then, in April 1911, found that mercury lost all electrical resistance below about 4.2 kelvin. Superconductivity turned out to be the extreme case of diamagnetism. 1200x1676.

Source: Wikimedia Commons

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