RAMAN, Sir Chandrasekhara Venkata, and K. S. Krishnan, “The Production of New Radiations by Light Scattering. Part I” , in Proceedings of the Royal Society A 122 pp. 23-35, 1929, in the volume of vi, 719, xxii, vipp. Beautifully bound in leather and boards, marbled page edges. Very slightly ex-lib with edge stamps and stamp on title, otherwise this is a fresh, clean copy. A handsome volume even with the page edge stamps. [There was no”part II” to this paper.] $350
Also bound with A.S. Eddington, “The Charge of an Electron”, pp 358-369 and A.H. Wilson, “Perturbation Theory in Quantum Mechanics”, pp 589-598. Leading the volume is an interesting review of recent work by Ernest Rutherford, “Anniversary Address...:, pp 1-23.
This is an expanded description of the Raman effect, the work for which Raman received the Nobel Prize for Physics in 1930 “for his work on the scattering of light and for the discovery of the effect named after him” (Nobel site), “that when light traverses a transparent material, some of the light that is deflected changes in wavelength...(a) phenomenon...called Raman scattering the result being the Raman effect”.--Encyclopedia Britannica
Raman publishes his paper for the first time a few months earlier in the Indian Journal of Physics, which led to a huge run of publications on the discovery—at least 160 in the 1928-1929 period according to the bibliography on papers published on the Raman effect “Bibliography of 150 Papers on the Raman Effect, 1928-1929”, by Dr. A. S. Ganesan. Of the 160 papers 12 are by Raman, and it was in the paper offered here (#62 in the bibliography) where he offers material not addressed in his previous papers.
”After Compton had discovered the Compton effect Heisenberg (1925) pointed out ...that this ought to be true for any em radiation, including visible light. That it was so in practice was shown in 1928 by...Raman...Raman spectra proved to be useful in determining some of the fine details of molecular structure.”--Asimov Chronology
“One of the most convincing proofs of the quantum theory of light.”--R.W. Wood
“In the Raman effect, a small fraction of light (approximately 1 in 10 million photons) is scattered through inelastic scattering, in which the energy of the scattered photon is not conserved. The Raman effect demonstrates the wave–particle duality of light a bit like the Compton effect, but the Raman effect differs from the Compton effect in the nature of the photons used (Raman uses visible light and Compton uses much higher energy X-rays) and the effect on the electron that scatters the light (the Raman effect changes the energy level of within an atom or molecule while the Compton effect ejects the electron from the material through the photoelectric effect).”
“Optical studies remained his chief concern, however. With his associates Raman studied the scattering of light of available frequencies by a number of substances, particularly fluids. In April 1923 Raman’s associate K. R. Ramanathan observed a weak secondary radiation, shifted in wavelength along with normally scattered light, which was attributed to “fluorescence.” S. Venkateswaran then noticed that highly purified glycerin does not appear blue under sunlight, but rather radiates a strongly polarized, brilliant green light.
“Raman and K. S. Krishnan then undertook to isolate the effect under impeccable experimental conditions. They employed complementary light filters placed in the paths of the incident and scattered light, respectively, and observed a “new type of secondary radiation” from the scattering of focused beams of sunlight in both carefully purified liquid and dust-free air. They reported this discovery in a letter to Nature in February 1928. Raman then refined the experiment by using a mercury arc as the source of light; the effect was thus clearly seen for the first time on 28 February 1928 and was reported to the Science Congress at Bangalore the following month. The secondary radiation showed several lines shifted toward longer wavelengths, the shifts being characteristic of the substances being examined, and indicated the absorption of energy by the scattering molecule—the precise effect that had been predicted by A. Smekal in 1923. G. Landsberg and L. Mandelshtam, in the U.S.S.R., independently observed the same phenomenon in quartz, shortly after Raman and Krishnan made their discovery, but Raman’s account of the effect reflected a much more detailed investigation. In 1929 Raman was knighted in recognition of his work, and the following year he was awarded the Nobel Prize for physics.”--Complete Dictionary of Scientific Biography
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