Are you an EPFL student looking for a semester project?
Work with us on data science and visualisation projects, and deploy your project as an app on top of GraphSearch.
Concept
Leonid Mandelstam
Summary
Leonid Isaakovich Mandelstam or Mandelshtam (Леанід Ісаакавіч Мандэльштам; Леонид Исаакович Мандельштам; 4 May 1879 – 27 November 1944) was a Soviet and Russian physicist.
Leonid Mandelstam was born in Mogilev, Russian Empire (now Belarus). He studied at the Novorossiya University in Odesa, but was expelled in 1899 due to political activities, and continued his studies at the University of Strasbourg. He remained in Strasbourg until 1914, and returned with the beginning of World War I. He was awarded the Stalin Prize in 1942. He died in Moscow, aged 65.
The main emphasis of his work was broadly considered theory of oscillations, which included optics and quantum mechanics. He was a co-discoverer of inelastic combinational scattering of light used now in Raman spectroscopy (see below). This paradigm-altering discovery (together with Grigory Landsberg) had occurred at the Moscow State University just one week earlier than a parallel discovery of the same phenomena by C. V. Raman and K. S. Krishnan. In Russian literature it is called "combinational scattering of light" (from combination of frequencies of photons and molecular vibrations) but in English it is named after Raman.
In 1918, Mandelstam theoretically predicted the fine structure splitting in Rayleigh scattering due to light scattering on thermal acoustic waves. Beginning from 1926, Mandelstam and Landsberg initiated experimental studies on vibrational scattering of light in crystals at the Moscow State University. As a result of this research, Landsberg and Mandelstam discovered the effect of the combinational scattering of light on 21 February 1928. They presented this fundamental discovery for the first time at a colloquium on 27 April 1928. They published brief reports about this discovery (experimental results with some attempt at a theoretical explanation) in Russian and in German and then published a comprehensive paper in Zeitschrift für Physik.
In the same year, two Indian scientists C. V. Raman and K. S. Krishnan also observed the inelastic scattering of light.
Official source
About this result
This page is automatically generated and may contain information that is not correct, complete, up-to-date, or relevant to your search query. The same applies to every other page on this website. Please make sure to verify the information with EPFL's official sources.