Lawson.] MODERN physics renders it probable that the only fundamental forces in Nature are those which have their origin in gravitation and in the electromagnetic field. After the effects ...

More information: Alessio Rocci et al, The quantum theory of gravitation, effective field theories, and strings: yesterday and today, The European Physical Journal H (2024). DOI: 10.1140/epjh ...

Newton's Law of Universal Gravitation is written as: \(F=G\frac{m_1m_2}{r^2}\) The constant of proportionality is the universal gravitational constant ("big G") which equals \(6.674\times{10^{- 11}} ...

It opened up an entire field of physics, but left Einstein with some nagging questions. The problems of gravity and acceleration would not go away. After thinking about the problems for 10 years ...