Sisir Kumar Mitra
Sisir Kumar Mitra (or Shishirkumar Mitra) MBE, FNI, FASB, FIAS, FRS (24 October 1890 – 13 August 1963) was an Indian physicist. == Early life and education == Mitra was born in his father's hometown of Konnagar, a suburb of Kolkata (then Calcutta) located in the Hooghly District in the Bengal Presidency (present-day West Bengal).