Excerpt from Recent Investigations Concerning the Constitution of Matter: Being a Course of Six Lectures Delivered at Patna University in March, 1922
The University of Patna did me the honour in 1920 to appoint me Reader in Physics, and I was asked to deliver a course of lectures during the winter of 1921-22. The lectures, under the conditions of the appointment were to be published. It is clear that in India, at least, one part of the University Reader"s duty is to codify existing branches of a subject rather than to impart new knowledge; the junior staff and senior students are thereby given an opportunity for a general survey of a wide field. With this object I have aimed at giving a connected sketch of what I judge to be the principal lines of research which are in progress at the present time. From what has been touched on much important work has obviously been omitted; many valuable researches have necessarily not even been touched on.
In cases where two lines of investigation were regarded as of almost equal significance, yet for want of time one had to be omitted, I have endeavoured to choose what I believe to be the less accessible. An alternative of this kind is presented in the Researches of Bragg on Crystal Structure and of Aston on Atomic weights. I chose the latter.
In preparing these lectures for the Press I have to some extent rearranged their order, for instance - Lecture 4 was actually delivered before Lecture 3. I have also made a few additions notably on the important recent work of Whittaker on Quantum Mechanism, and of Ewing on Ferromagnetic Models.
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