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Description
Figure 1. Cavendish thermometer. Beginning in 1757 Lord Charles Cavendish,vice-president of the Royal Society, invented and described a number of thermometers utilizing the principle of the dilatation of liquid. One of these was a minimum thermometer used to retain the minimum temperature observed. The liquid used was alcohol. It was first used by John Phipps on the RACEHORSE in 1773. (Image credit: Oceanographic Museum of Monaco | Y. Berard)