Grigory Landsberg
Grigory Samuilovich Landsberg (Russian: Григорий Самуилович Ландсберг; 22 January 1890 – 2 February 1957) was a Soviet physicist who worked in the fields of optics and spectroscopy.He is the author of the famous course of "Optics", and editor of the most popular "Elementary Textbook on Physics" (Volumes 1–3, 7th Edition, 1971).Beginning in 1926, Mandelstam and Landsberg initiated experimental studies on the vibrational scattering of light in crystals at the Moscow State University.[5] In the same year of 1928, two Indian scientists C. V. Raman and K. S. Krishnan were looking for the "Compton component" of scattered light in liquids and vapors."[6] Thus, combinational scattering of light was discovered by Mandelstam and Landsberg a week earlier than by Raman and Krishnan.