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August 1972

Volume 25, Issue 8

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Surface structure—an emerging spectroscopy

C. B. Duke and Robert L. Park
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Routine production of ultrahigh vacuum, new surface‐analytical techniques and more quantitative theories—all combine to open exciting prospects for the study and use of solid surfaces.

Pumping by chemical means

Theodore Tom
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Sputter‐ion and sublimation pumps form a complementary pair that, by transforming gases to the solid phase within the vacuum chamber, can routinely reach pressures as low as 10−11 torr.

Diffusion pumps

Barbara G. Levi
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Gauges for ultrahigh vacuum

W. J. Lange
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Modifications of the early triode ionization gauge have greatly extended its low‐pressure limit and have also increased the complexity of operation and interpretation.

Selecting materials and hardware

William R. Wheeler
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Gaskets, joints, lubricants and other components must be easily cleanable, unharmed by high temperature and chemically nonreactive; some substances approach this ideal better than others.
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More about the “fuzzy‐ball” photon

Franklin E. Schroeck, Jr., Hans C. Ohanian, Forrest C. Strome, Jr., Marlan O. Scully, and Murray Sargent, III
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On unions

Charles R. Legendy, Michael Rettinger, M. Sheehan, and Cedric G. Rogers
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Corrections

David Finkelstein
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AEC opens up on laser fusion implosion concept

Gloria B. Lubkin
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The case of the missing solar neutrinos

Gloria B. Lubkin
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Time and the Space‐Traveller

L. Marder and Banesh Hoffmann, Reviewer
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Lens Aberration Data

J. M. Palmer and J. Warren Blacker, Reviewer
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Fourier Methods in Crystallography

G. N. Ramachandran, R. Srinivasan, and Robert F. Stewart, Reviewer
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Elementary Particle Theory

A. D. Martin, T. D. Spearman, and Gordon L. Kane, Reviewer
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Theory of Vibrational Spectroscopy

Derek Steele and William T. King, Reviewer
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New Books

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Langmuir Award goes to McConnell

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NAS awards to Yoder, Deprit, Johnson, Uyeda

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FREE

Herbert J. Plagge

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FREE

Nikolai V. Fedorenko

Wade L. Fite
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FREE

Stephen MacNeille

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US‐Soviet accord will ease joint research

Steven M. Hein
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Greenstein report recommends priorities

Steven M. Hein
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Health Sciences program gets $5m shot in the arm

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Fulbright scholarship alumni: Where are you?

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In Brief

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National Science Board urges “peace” technology

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Shea to head AIP's Education Division

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New APS committee to study minority groups

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APS divisions elect chairmen for 1972

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Calendar

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The importance of empty space

Harold L. Davis
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