User:MathFacts/lightpressure

$$F=\frac{2 S T^4 \sigma \left(V^2-v^2\right)}{c^4 \left(\frac{1}{v}+\frac{1}{V}\right)}$$

$$P=\frac{32}{5}\, \frac{G^4}{c^6}\, \frac{(m_1m_2)^2 (m_1+m_2)}{r^5}$$