Thermal expansion calculator

With this calculator, you can calculate how much the length of an object changes as the temperature changes. You can choose the material of the object from a few predefined options or select "Enter value manually" and provide the thermal expansion coefficient for the object. You can also choose the units of length, which may be helpful in some cases. In addition to conventional metals, you can choose non-metals such as epoxy, brick, and concrete.

What is thermal expansion?

Thermal expansion is the phenomenon where materials expand or contract as temperature changes. Length thermal expansion refers to the change in a material's length as temperature changes. This phenomenon is very common and has a significant impact on many applications, such as building design, metallurgy, and electronics.

In general, when a material is heated, its structural components (molecules and atoms) begin to vibrate more. This vibration increases the average distance between the molecules or atoms of the material, leading to an increase in the material's dimensions. Conversely, when a material is cooled, its molecules or atoms reduce their vibration, causing the material to contract.
The amount of thermal expansion depends on the material and the temperature change. This can be expressed by the coefficient of thermal expansion, which describes the material's relative change in length per unit change in temperature. The unit of thermal expansion coefficient is typically 1/K (one per kelvin), and it can vary for different materials.

For example, when measuring the thermal expansion of a metal's length, the formula can be used:
ΔL=Lα⋅ΔT
where:
ΔL is the change in length,
L is the original length,
α is the material's coefficient of thermal expansion, and
ΔT is the temperature change.

This formula can be used to estimate how much the length of a certain material changes based on the given temperature change.

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