Logger pro

\Delta l=\alpha l_0\Delta T
y=kx\left(+b\right)
\Delta l=y
\alpha l_0=k
\Delta T=x
siis
\alpha=\frac{0{,}01163\frac{mm}{K}}{982mm}\approx11{,}8\cdot10^{-6}\frac{1}{K}
Fysioiden kulmakerroin 
k=\alpha l_0
\alpha=\frac{k}{l_0}