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Optical Masers

These devices generate light in such a manner as to open up a whole new realm of applications for electromagnetic radiation. The salient feature of the light they produce is that its waves are all in step...

By Arthur L. Schawlow

The Social Life of Baboons

A study of "troops" of baboons in their natural environment in East Africa has revealed patterns of interdependence that may shed light on the early evolution of the human species

By Irven DeVore and S. L. Washburn

Stabilized Images on the Retina

When the involuntary movements of an image across the retina are prevented, the image fades and reappears in a manner that provides new information on two major theories of perception

By Roy M. Pritchard

Viruses and Genes

When a virus infects a bacterium, the genes of the virus sometimes act as genes of their host. The phenomenon has illuminated the mechanism of both heredity and infection

By Elie L. Wollman and François Jacob

Subdwarf Stars

Certain stars seem dimmer than normal stars having the same temperature. It now appears that they are not less luminous but are bluer because they are poorer in the heavier elements

By Geoffrey Burbidge and Margaret

Excavations at Sardis

The capital of King Croesus of Lydia in the sixth century B. C., this city In Asia Minor was successively conquered by the Persians, the Greeks, the Romans and the Byzantines

By George M. A. Hanfmann


This little known but remarkably potent member of the family of B vitamins has been a biochemical puzzle for three decades. The details of its functions are only now beginning to emerge

By John D. Woodward

The Airborne Magnetometer

A sensitive instrument that points the way to ore deposits and oil fields by detecting magnetic anomalies from the air has greatly broadened the scope of geophysical exploration

By Homer Jensen


  • 50 and 100 Years Ago: June 1961

  • Science and the Citizen: June 1961

  • Letters

    Letters to the Editors, June 1961

  • Recommended


  • Mathematical Recreation

    Mathematical Games

  • Amateur Scientist

    The Amateur Scientist

  • Departments

    The Authors

  • Bibliography

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