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March 1949

Volume 2, Issue 3

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ARTICLES

Select this Article		Electrets Andrew Gemant


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	+ -	Show Topic The electret, an electrical counterpart to a permanent magnet, theoretically isn't supposed to exist. Yet the author made one which is still “alive” after twelve years. He discusses how electrets may be used and some of the problems in understanding them.

Select this Article		Freedom vs security in the modern world Robert E. Cushman


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	+ -	Show Topic The patterns of secrecy are more difficult to shed than they are to assume and Professor Cushman analyzes them in relation to freedom and security which, he holds, need not become mutually exclusive. This is the text of a speech given before the American Physical Society at its winter meeting banquet in New York City, January 27, 1949, at the Hotel New Yorker.

Select this Article		Abstracts Dwight E. Gray


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	+ -	Show Topic Too little and too late is the reaction of most scientists to the short summaries intended to keep them informed of what is going on in their field now and to tag things nicely for investigators in the years to come. The American Institute of Physics and the American Physical Society are conducting a study of abstracting physics literature. The Director of this project reports on the points of view beginning to emerge in the first four months of the project's existence.

BOOKS

Select this Article		Military and Political Consequences of Atomic Energy P. M. S. Blackett and Manuel Sandoval Vallarta, Reviewer


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Select this Article		Practical Spectroscopy George R. Harrison, Richard C. Lord, John R. Loofbourow, and Stanley S. Ballard, Reviewer


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Select this Article		Books Received


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OBITUARIES

Select this Article		Carl Vose Woodbury


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LETTERS TO THE EDITOR

Select this Article		Thanks Again John C. Slater


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Select this Article		Physics Tomorrow C. W. Kilmister and E. W. Bastin


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Select this Article		More Physics Tomorrow Richard C. Raymond


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NOTES FROM ABROAD

Select this Article		Mexico Manuel Sandoval Vallarta


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NEWS AND VIEWS

Select this Article		Astronomy in Africa


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Select this Article		Radio UNESCO


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Select this Article		Shield


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Select this Article		Going Well


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Select this Article		Going Ahead


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Select this Article		Going Up


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Select this Article		Physics in Medicine


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Select this Article		AEC News


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Select this Article		NBS News


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Select this Article		New Australian Journal


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Select this Article		Awards


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Select this Article		Meetings


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Select this Article		Jet Propulsion Centers


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Select this Article		Student Exchange


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Select this Article		Fellowships


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Select this Article		Dates Changed


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Select this Article		Society Activities


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CALENDAR OF EVENTS

Select this Article		Calendar of Events


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JOURNAL NOTES

Select this Article		Magnetic Servo E. S. Bettis


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Select this Article		Electron Optics E. G. Ramberg


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Select this Article		Trochotron G. K. Werner


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Select this Article		Optical Coatings Noel W. Scott


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Select this Article		Measuring Colloidal Particles K. L. Yudowitch


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Select this Article		Air Friction A. R. Kuhlthau


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WHEREABOUTS

Select this Article		Whereabouts


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LETTERS TO THE EDITOR

Select this Article		Triple Trouble Ing. Bruche


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March 1949

Volume 2, Issue 3

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