v 1 = R 1 R 1 + R 3 v {\displaystyle v_{1}={\frac {R_{1}}{R_{1}+R_{3}}}v}
n + 1 = R 2 R 3 {\displaystyle n+1={\frac {R_{2}}{R_{3}}}}
E = m c 2 {\displaystyle E=mc^{2}\,}