# Linear Thermal Expansion

**Formula:** `ΔL = L₀ * α * ΔT`

The linear thermal expansion of a material is the amount that the material expands in one direction as the temperature changes. This is particularly relevant in solids. The formula for linear thermal expansion is ** ΔL** =

*****

*L₀******

*α***, where:**

*ΔT*is the change in length,*ΔL*is the initial length of the material,*L₀*is the linear expansion coefficient of the material,*α*is the change in temperature.*ΔT*

The expansion coefficient is a measure of how much a material expands per degree of temperature increase and is usually given in /°C or /K. Practically, this formula allows engineers and designers to estimate the size changes of materials under different temperature conditions to ensure the structural integrity of buildings, machines, and other constructions.

Tags: Thermodynamics, Expansion, Temperature, Material Science