Image: Leiden116
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Description: Commemorative plaque in Kamerlingh Onnes Building, Steenschuur, Leiden (The Netherlands). Text: the liquefaction of helium took place here on 10 July 1908 by dr Heike Kamerlingh Onnes. This plaque was offered to him by the staff of his laboratory on the occasion of the 40th anniversary of his professorship, 11 November 1922
Title: Leiden116
Credit: Own work
Author: Vysotsky
Usage Terms: Creative Commons Attribution-Share Alike 3.0
License: CC BY-SA 3.0
License Link: http://creativecommons.org/licenses/by-sa/3.0
Attribution Required?: Yes
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