Application of Expansion 1. Expansion property is used in mercury thermometers and liquid thermometers. 2. Suitable gap between rails of railway track is kept to provide scope for expansion. 3. Long compound walls are also build by keeping certain gap. 4. Isothermal and adiabatic expansions and compressions of gas are used in studying heat cycles and it is used to study heat engines. 5. In manufacturing of heat exchangers, designer has to take into account the expansion of components used in it. 6. Depending upon values of linear expansion, aerial expansion or cubical expansion, thermal properties of material can be studied.
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