Linear Thermal Expansion Coefficient

Written by Jerry Ratzlaff on . Posted in Thermodynamics

Linear thermal expansion coefficient, abbreviated as \(\alpha\), also known as coefficient of linear thermal expansion, is the ratio of the change in size of a material to its change in temperature.

Linear Thermal Expansion Coefficient FORMULA

\(\large{ \alpha_l  =  \frac { 1 }{ l } \; \frac {\Delta l } {\Delta T}   }\)         


\(\large{ \alpha_l }\)   (Greek symbol alpha) = linear thermal expansion coefficient

\(\large{ l }\) = length of the object

\(\large{ \Delta l }\) = length differential

\(\large{ \Delta T }\) = temperature differential


Tags: Equations for Thermal Equations for Coefficient