Mathematical and Physical Papers

Excerpt from Mathematical and Physical Papers Vol. 2. Professor Powell''s letter I was led to perceive that the intensity of the light could be expressed in finite terms. This saves the trouble of Mr Airy''s quadratures and allows the results to be discussed with great facility. The law too Of the variation Of the intensity with the thickness of the plate is very remarkable on account of its discontinuity. These reasons have induced me to lay my investigation before the Royal Society even though the remarkable polarity of the bands has been already explained by the Astronomer Royal. The observation of these bands seems likely to become of great importance in the determination of the refractive indices and more especially the laws of dispersion of minerals and other substances which cannot be formed into prisms which would exhibit the fixed lines of the spectrum.. About the Publisher. Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at forgottenbooks. This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work preserving the original format whilst repairing imperfections present in the aged copy. In rare cases an imperfection in the original such as a blemish or missing page may be replicated in our edition. We do however repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.