Catathermometer

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The Katathermometer by Leonard Hill is in the climatology to determine the cooling figure . It is a sluggish liquid thermometer whose capillary has a mark at 35 ° C and at 38 ° C as well as a device constant.

application

For the measurement, it is first heated in a water bath (e.g. 60 ° C). The time in seconds that the liquid meniscus needs to drop from the upper 38 ° C mark to the lower 35 ° C mark is then measured at the measuring location .

The kata value is then calculated from dividing the device constant by the cooling time, which indicates how quickly heat is given off by the surface of a person at the measurement location. This also explains the temperature range under consideration.