An Indian mathematician, with masters in mixed mathematics. With Saha, he
derived the Saha-Bose equation of state for a non ideal gas in1918. In 1920,
he derived Rydberg law in the old quantum, theory. He introduced Bose
statistics to account for photon identity. He worked experimentally and
theoretically on crystallography, fluorescence, thermoluminescense and on
general relativity.