Issues

A controversial discussion of the origin of the earth's magnetic field by an English geophysicist.

The demand for single crystals has outstripped nature's bounty. Research in crystal physics has revealed the opportunity for breeding new species which are better adapted than natural crystals to many technical applications.

On the threshold of the great events which transformed physics in the twentieth century—quantum theory, radioactivity, and relativity—Henry A. Rowland, the first president of the newly formed American Physical Society, gave the following address on October 28, 1899, fifty years ago next month. It is reprinted from the first issue of the Bulletin of the American Physical Society.

APS at Seattle

Conference at Oak Ridge

For the microscope

International conference reported

Closing date soon

Executive director named

Wisconsin AAPT; Sigma Pi Sigma.