Linear Thermal Expansion Coefficient

Written by Jerry Ratzlaff on . Posted in Thermodynamics

Linear Thermal Expansion Coefficient

Linear thermal expansion coefficient ( \(\alpha\) ) (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

\( linear \;thermal \; expansion \; coefficient   \;=\;   \frac { 1 }{ length \; of \; object }   \;\;x\;\;    \frac { length \; differential } { temperature \; differential }   \)

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

Where:

\(\alpha\) (Greek symbol alpha) = linear thermal expansion coefficient

\(l\) = length of the object

\(\Delta l\) = length differential

\(\Delta T\) = temperature differential

 

Tags: Equations for Thermal Equations for Coefficient