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Thermometer

Heat and Temperature of Class 7

Thermometer

Thermometer is the device to measure temperature when the change of heat occurs. By the use of alcohol or mercury inside the thermometer the purpose is same to measure heat temperature.Working of thermometer is very simple liquid inside it expands as it is heated and contracts, when it is cooled, in this processes the length of the liquid column, is longer or shorter depending on the temperature we are increasing or decreasing.

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