Question

Explain Thermal Expansion​

Answer 1

Answer:

Thermal expansion is the tendency of matter to change in shape, volume, and area in response to a change in temperature. ... The degree of expansion divided by the change in temperature is called the material's coefficient of thermal expansion. It is found to generally vary with temperature.

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Answer 2

Thermal expansion is the tendency of matter to change in shape, volume, and area in response to a change in temperature. ... The degree of expansion divided by the change in temperature is called the material's coefficient of thermal expansion. It is found to generally vary with temperature.

Formula

$aL = \frac{1}{L} \frac{dL}{dT}$

{aL} = thermal expansion

{L} = particular length measurement

{dL} = change in length

{dT} = change in temperature