Meghnad Saha (1893–1956)
Born 1893 CE, died 1956 CE.
Meghnad Saha (6 October 1893 – 16 February 1956) was an Indian astrophysicist and politician who helped devise the theory of thermal ionisation. His Saha ionisation equation allowed astronomers to accurately relate the spectral classes of stars to their actual temperatures.
Text from the Wikipedia article Meghnad_Saha, licensed CC BY-SA 4.0.