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January 1950

Volume 3, Issue 1

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The genesis of cosmic radiation

Serge A. Korff
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Are cosmic rays really cosmic, pervading all space; or are they limited to galaxies such as our Milky Way; or do they originate within the solar system? In the August, 1949 issue of Physics Today, Edward Teller favored the latter theory; the author of the present article surveys the situation and comes to a different conclusion.

Science and the ethics of transition

David Hawkins
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Caught between an inescapable and growing involvement in social issues of the day and a longstanding tradition of professional isolationism, scientists have come to realize that habits of objective analysis are a blunt tool for attacking problems of social origin. A philosopher of science, the author finds here an analogy between the questings of research and of a society in transition to suggest an ethical conception which has meaning in both. He writes that there is no turning back of the clock; that “science can no longer be free from society; but it can be free along with society.”

The tools of the physics teacher

Richard M. Sutton
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A sense of humor and love for the subject are among the basic virtues of the physics teacher writes the author, who has both. He gives a few of his ideas on the subject here.

Physics in Brazil—Ways and means

B. Gross
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Like its prominent representative C.M.G. Lattes, physics in Brazil is young
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Units of Radioactivity

L. F. Curtis, R. D. Evans, Warren Johnson, and Glenn T. Seaborg
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Mecca Mistake

Z. Manny Fechet
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This I Do Believe

David E. Lilienthal and Robert R. Davis, Reviewer
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Third Symposium on Combustion Flame and Explosion Phenomena

James Bernard Kelley, Reviewer
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Stochastic Processes and Their Application to the Theory of Cosmic Radiation

Marc Kac, Reviewer
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Books Received

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Hobart Cutler Dickinson

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Daniel B. Feer

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Physics Today⋯1950

Henry A. Barton
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Whereabouts

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Small Angles and Small Particles

George H. Vineyard
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Conference at the University Of Missouri

A Serious Turn

Charles Critchfield
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Thanksgiving Meeting of the American Physical Society

Varisonic

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Wind tunnels: built, building, and planned

Radiac Symposium

W. S. McAfee
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Held at Signal Corps Engineering Labs

Ici on Parle Francais

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Celsius, centésimale, and centigrade

Sound in St. Louis

R. Clark Jones
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Acoustical Society meets

Arts and Sciences

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150th Anniversary of Connecticut Academy

Honors and Awards

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Physicists honored in Great Britain; Medal of the University of Liége

Society Activities

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Crystallized; New officers; Responsible.

Miscellany

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Institute of Photography; Technical information services; Raytheon
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Meson Structure

C. N. Yang
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Total Reflection Filter

B. H. Billings
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Accelerator Shielding

E. Creutz
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Ferromagnetic Crystals

R. M. Bozorth
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Electric Breakdown

Herbert Callen
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Ultrafast

R. C. Fletcher
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Conductivity at Microwave Frequencies

Fred P. Adler
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Sanguine

John W. Clark
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Sensitive

Martin Biltz
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Colour in Nature

A. E. Dodd
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Calendar of Events

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