Kamerlingh Onnes and Gerrit Jan Flim at the second helium liquefier, 1919

JAN 01 1919

Kamerlingh Onnes standing with Gerrit Jan Flim, the chief of the cryogenic laboratory, beside the second helium liquefier in 1919. Flim was the instrument-maker who actually built and ran the plant. A rare shot of the human machinery behind the discovery.