define coefficient of linear expansion
A metal rod of length l expands an amount Δl when temperature is incresed by ΔT.
Then coefficient of linear expansion α is given by
α = ( Δl / l) / ΔT
define coefficient of linear expansion
A metal rod of length l expands an amount Δl when temperature is incresed by ΔT.
Then coefficient of linear expansion α is given by
α = ( Δl / l) / ΔT