Page:On the Influence of the Thickness of Air-space on Total Reflection of Electric Radiation.djvu/1

300

"On the Influence of the Thickness of Air-space on Total Reflection of Electric Radiation." By, M.A., D.Sc., Professor of Physical Science, Presidency College, Calcutta. Communicated by, 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