Temperature coefficient of linear expansion (solid body)
$$\alpha = \frac{\Delta_{l}}{l_{1}\cdot \Delta_{t}}$$
α - temperature coefficient of linear expansion (linear expansivity)
Δ_l - change in length
l_1 - initial length
Δ_t - temperature change
Δ_l - change in length
l_1 - initial length
Δ_t - temperature change
Find
It is known that:
= 