Figure 1

Figure 1. Cavendish thermometer. Beginning in 1757 Lord Charles Cavendish, vice-president of the Royal Society, invented and described a number of thermome ters 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.

Photo Category: Oceanography - Historical instruments