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Dr. J. C. Bose. On the Influence of the Thickness of
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"On the Influence of the Thickness of Air-space on Total Reflection of Electric Radiation." By Jagadis Chunder Bose, M.A., D.Sc., Professor of Physical Science, Presidency College, Calcutta. Communicated by Lord Rayleigh, F.R.S. Received November 15,—Read November 25, 1897.
In my preliminary experiments on the determination of the index of refraction of various substances for electric radiation, I used a
