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Article: Gauging the Aharonov-Bohm effect. (magnetic filed alters the behavior of electrons without touching them)
- Article from:
- Science News
- Article date:
- March 1, 1986
- Author:
CopyrightCOPYRIGHT 1986 Science Service, Inc. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)
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Gauging the Aharonov-Bohm effect
Now seems to be the season for the experimental realization of paradoxical quantum mechanical effects (SN: 2/1/86, p. 70; 2/8/86, p. 87). This week it's the Aharonov-Bohm effect, in which a magnetic field alters the behavior of electrons without touching them. In the Feb. 24 PHYSICAL LETTERS, Akira Tonomura and six colleagues working in the laboratories of Hitachi Ltd. in Tokyo report what they describe as the definitive experiment.
In 1959 Yakir Aharonov of the University of South Carolina-Columbia and David Bohm of Birkbeck College of the University of London, England, predicted that if two beams of electrons ...