Abstract
THE annual report for the year 1939 of the Indian Association for the Cultivation of Science includes as an appendix a report by Prof. K. S. Krishnan on the scientific work of the Association. This has included investigations on the magnetic properties of a free-electron gas with the view of determining the energy distribution, and Pauli's observation of a feeble paramagnetism independent of temperature in the electron gas has been verified for several metals. Landau's discovery of the appreciable diamagnetism of an electron gas has been experimentally verified, and recent measurements by Prof. Krishnan and Mr. N. Ganguli have shown that the conductivity of graphite in the basal plane is at least 10,000 times that along the normal to the plane. Other investigations have related to the mobile electrons in aromatic molecules, the diamagnetism of aromatic molecules, optical studies on aromatic molecules, magnetic studies on bismuth in the neighbourhood of its melting point, and paramagnetic studies on single crystals of the salts of the rare earth and the iron groups of metals, as well as structural studies on organic crystals, including the halogen derivatives of benzoquinone and related compounds. Notes on some spectroscopic work on the sulphides of the transitional group of elements and on the discovery of a new ionization layer in the upper atmosphere are also included.
Article PDF
Rights and permissions
About this article
Cite this article
Indian Association for the Cultivation of Science. Nature 146, 714 (1940). https://doi.org/10.1038/146714c0
Issue Date:
DOI: https://doi.org/10.1038/146714c0