Question

What is the relation between Alpha, Beta, and Gamma in Thermal Expansion?

Answer 1

Thermal Expansion:

1. The volume of the material increases as the temperature rises. This is referred to as thermal expansion.
2. Thermal expansion is defined as a body's tendency to change its dimensions (length, area, and volume) as the temperature changes.
3. It is also known as the fractional change in length or volume per unit change in temperature.
4. Relation between Alpha, Beta, and Gamma in Thermal Expansion can be written as $\alpha =\frac{\beta }{2}=\frac{\gamma }{3}$. Here, $\alpha$ is the coefficient of linear expansion, $\beta$ is the coefficient of aerial expansion, $\gamma$ is the coefficient of cubical expansion.
5. The change in length along one dimension (length) over the volume is referred to as linear expansion.
6. Areal expansion or superficial expansion of solids refers to the increase in the surface area of a solid caused by heating.
7. The increase in volume of a substance as its temperature or pressure changes is called cubical expansion.