K. S. Krishnan, or K. S. Krishnan, refers to K. S. Krishnan (Kuppuswami Srinivasan Krishnan), who was an eminent Indian physicist and an influential figure in the field of science and technology in India. He was known for his significant contributions to the study of magnetism and material science, particularly in the context of crystal physics and the properties of materials at low temperatures.
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An experimental physicist who, with Chandrasekhara Venkata Raman, reported frequency-shifted light scattered by liquids. Their photographs compare filtered mercury-lamp light with the scattered spectrum, showing additional lines absent from the input. The Raman effect turns exchange of energy with molecular motion into spectral shifts, making scattered light a probe of molecular structure.[ref]
The Optical Analogue of the Compton Effect by Chandrasekhara Venkata Raman and Kariamanikkam Srinivasa Krishnan. Abstract and Figure 1: filtered incident spectrum and additional scattered lines