Linear Thermal Expansion

Written by Jerry Ratzlaff on . Posted in Thermodynamics

expansion linear 1Linear thermal expansion, abbreviated as \(\Delta l\) (Greek symbol alpha), also known as line thermal expansion, is a porportional change in the origional length and change in temperature due to the heating or cooling of an object.

Linear Thermal Expansion Formulas

(Eq. 1)  \(\large{ \Delta l  =   l_f  -  l_i  }\)                      

(Eq. 2)  \(\large{ \Delta l  =  \alpha \; l_i \; \Delta T }\)       

Where:

\(\large{ \Delta l }\)  (Greek symbol alpha) = linear thermal expansion

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

\(\large{ l_f }\) = final length of object

\(\large{ l_i }\) = initial length of object

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

 

Tags: Equations for Thermal