Sisir Kumar Mitra (1890-1963) was a Bengal based Professor of Physics at the University of Calcutta. He was the founder of ionospheric science and radio technology in India. He was one of the few physicists, whose names are connected with the Physics Nobel Prize and the Fellowship of Royal Society London. He was associated with various scientific institutions such as Indian National Science Academy, Indian Association for the Cultivation of Science and Asiatic Society of Bengal. In spite of high reputation and international achievements, little is written on him. The present communication gives: (i) a short review of S K Mitra’s scientific work in the fields of optics, which he did under C V Raman, and (ii) S K Mitra’s scientific achievements for which he was nominated and elected for the Fellowship of the Royal Society of London.

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西西尔·库马尔·米特拉（Sisir Kumar Mitra），科学成就和伦敦皇家学会的奖学金

西西尔·库马尔·米特拉（Sisir Kumar Mitra，1890-1963年）是加尔各答大学的孟加拉物理学教授。他是印度电离层科学和无线电技术的创始人。他是为数不多的物理学家之一，他们的名字与诺贝尔物理学奖和伦敦皇家学会奖学金联系在一起。他与印度国家科学院，印度科学培养协会和孟加拉亚洲学会等各种科研机构有联系。尽管享有很高的声誉和国际成就，但关于他的著作却很少。本通讯给出：（一）SK Mitra的在光学领域，这是他在CV拉曼做科研工作的简要回顾，及（ii）在他被提名并当选为皇家的奖学金SK Mitra的科学成就伦敦学会。