Physics

Yields of US and Soviet Nuclear Tests

Physics Today Vol. 40, p. 36 (August 1987) Part 1(PDF) Part 2 (PDF)
Coauthor: Jack Evernden

Failure to account properly for geological and seismological differences between the US and Soviet test sites has led to overestimates of Soviet tests and to incorrect claims of Soviet cheating on the treaty limit of 150 kilotons.

Nuclear Policy
Physics
Politics

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Accelerator System for a 1-Million Volt Scanning Transmission Electron Microscope

Reviews of Scientific Instruments, Vol 48, p. 841 (1977)

The accelerator, magnetic shielding-equipotential grading system, and voltage divider chain of the University of Chicago 1-MV STEM are described. A dynamical analysis of the system is presented in addition to a discussion of the problem of “electron loading” encountered while conditioning the accelerator tube.

(PDF)

Physics

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Does a Gravitational Red Shift Necessarily Imply Space-Time Curvature?

American Journal of Physics, Vol. 43, p. 266 (1975)
Coauthor: Charles Nissim-Sabat

We show that no argument that attempts to infer space-time curvature solely from the gravitational red shift can be valid.

(PDF)

Physics

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Uniform Magnetic Fields and the Problem of the Ellipsoid

Journal of Applied Physics, Vol. 46, p. 3178 (1975)

The problem of obtaining a uniform magnetic field within a nondegenerate ellipsoid by the use of an appropriate surface current distribution is solved.

(PDF)

Physics

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Tetrads and the Gravitational-inertial Field

The tetrad formulation of general relativity allows a non-tensorial decomposition of the gravitational field into two components which have been thought to represent the permanent and inertial parts. It is shown here that this division does not hold for arbitrary motions in a flat space-time, and therefore cannot be expected to hold in more general spaces.

Aust. J. Phys. 27, 131 (1974)

Tetrads & Grav-Inertial Field

Physics

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Transformation to Rotating Coordinates, reply to Atwater

Shows that the special theory of relativity may be applied to the problem of the rotating disk if one includes the Thomas precession.

Nature Physical Science 230, 197 (1971)

Rotating Disk

Physics

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