Question

When did Meghnad Saha invent the instrument that could measure the weight and pressure of solar rays?

Answer 1

Meghnad Saha FRS (6 October 1893 – 16 February 1956) was an Indian[1][2] astrophysicist best known for his development of the Saha ionization equation, used to describe chemical and physical conditions in stars. Saha was the first scientist to relate a star's spectrum to its temperature, developing thermal ionization equations that have been foundational in the fields of astrophysics and astrochemistry.[3] He was repeatedly and unsuccessfully nominated for the Nobel Prize in Physics. Saha was also politically active and was elected in to the Parliament of India in 1952