Question

define coefficient of thermal expansion in one dimension​

Answer 1

Answer:

Thermal expansion is the tendency of matter to change its shape, area, volume, and density in response to a change in temperature, usually not including phase transitions.[1]

Answer 2

Answer:

The area thermal expansion coefficient relates the change in a material's area dimensions to a change in temperature. It is defined as αA=1AdAdT α A = 1 A dA dT .

Explanation:

The coefficient of thermal expansion describes how the size of an object changes with a change in temperature. Specifically, it measures the fractional change in size per degree change in temperature at a constant pressure, such that lower coefficients describe lower propensity for change in size.