Are You Sure? (September 21)

GNOMON CHRONICLES [[File:Ehrenfest_Lorentz_Bohr_Kamerlingh_Onnes.jpg|thumb|175px|link=Heike Kamerlingh Onnes (nonfiction)|[[Heike Kamerlingh Onnes (nonfiction)|Cryogenics Laboratory in Leiden. Left to right: Paul Ehrenfest, Hendrik Lorentz, Niels Bohr, and Heike Kamerlingh Onnes (discoverer of superconductivity).]] Are You Sure ... (September 21, 2020)

• ... that physicist and chemist Heike Kamerlingh Onnes was awarded the 1913 Nobel Prize in Physics for "his investigations on the properties of matter at low temperatures which led, inter alia, to the production of liquid helium"?

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