Abstract
Sir C. V. Raman and B. V. Raghavendra Rao submit Fabry-Perot patterns of light scattered by phenol, showing that, with increasing temperature, Doppler-shifted components come increasingly into evidence. In a non-viscous liquid like toluene, both the displaced and undisplaced components are almost completely polarized with the vibrations vertical. In the more viscous phenol the undisplaced vibration is only partially polarized, appearing both in the vertical and horizontal vibrations. The authors consider that the theory which regards the diffusion of light in liquids as due to the reflection of light by regular and infinitely extended trains of sound-waves present in them, must break down in the case of very viscous liquids.
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Points from Foregoing Letters. Nature 141, 250 (1938). https://doi.org/10.1038/141250a0
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DOI: https://doi.org/10.1038/141250a0