Question

cubical expansion is what

Answer 1

Cubical Expansion of Solid: Whenever there is an increase in the volume of the body due to heating the expansion is called as cubical or volumetric expansion.

Answer 2

Coefficient of cubical expansion is the fraction of volume increased when a body is heated. Its the property of the material and Aluminium has the highest coefficient of expansion among the metals.

α=ΔVVΔT

Unit of α is /oC.

In Engineering its usually represented as α

An interesting fact is that Invar (An alloy of Fe and Ni —FeNi36) show approximately zero coefficient of expansion. The name came from invraible