cGh physics

The historical attempts at unification of relativity, gravity and quantum mechanics may be referred to as cGh physics. 

This particularly follows the thought of Matvei Bronstein and George Gamow. The cGh scheme for classifying physical theories was introduced by Bronstein with the hope of unifying special relativity, gravity and quantum mechanics. 

The letters of cGh are the constants (c) the speed of light, (G) Gravitational constant and (h) is Planck's constant. One may consider these three constants as components in a 3D coordinate system. One may envision a cube, known as cGh cube, may organize major subjects within physics, as occupied by each of its eight corners. 

It was not known before Ole Romer that the speed of light was finite. Romer made his measurement in 1676 while working at the Royal Observatory in Paris.