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Technical data Heat of evaporation of waterItem No. P9171000 Principle In this experiment, students observe the cooling of a wet thermometer and a dry thermometer in air. They notice that a wet thermometer cools down even further in the air and that there is a clear difference to the dry thermometer. From this they conclude that the evaporation of water has a cooling effect, which extracts heat from the thermometer and thus further reduces the temperature displayed.
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PHYWE Systeme GmbH & Co. KG
Robert-Bosch-Breite 10 – 37079 Göttingen – Germany
www.phywe.com
Robert-Bosch-Breite 10 – 37079 Göttingen – Germany
www.phywe.com