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# Hot linear expansion online calculator

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### App Description

Enter the value and click "Calculate" to display the result

Calculation formula:

L = linear expansion

L1 = initial length

α = linear expansion coefficient of material

T1 = initial temperature

T2 = final temperature

Through solids, liquids and gases have dimensional changes, temperature changes, and pressures remain constant.

In the heat transfer process, it is the energy change of the interatomic bonds stored between the molecules. When the stored energy increases, the bond length of the molecule. Therefore, the solid usually expands the cooling heating and contract response; this response to temperature changes is expressed as its coefficient of thermal expansion.

The coefficient of thermal expansion is the thermodynamic property of the substance. It involves changes in the temperature of the material to the linear dimensions of the material. It is the rate of change in length of each degree of temperature change.

Most solids swell when heated. The reason is that this gives the atom more room to bounce and the kinetic energy is already high in high temperature conditions. The effect of thermal expansion is relatively small and is approximately linear at absolute temperatures.

Most materials undergo thermal expansion: they tend to expand when heated and shrink when cooled. Therefore, the expansion joints of the bridge are constructed of metal, so they can expand and contract to cause a break in the overall structure of the bridge. Other machines and structures also have built-in protection against thermal expansion. However, thermal expansion can also be advantageous, allowing the thermometer and thermostat to work.

### Usage example

Input data:

Initial length: 10m

Initial temperature: 10 ° C

Final temperature: 45 ° C

Linear expansion coefficient of material: 60 10-6°C-1

Click "Calculate" to output data

Linear expansion: 21000 10-6m

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