Physics Today, September 2009

coverj_62_9

The Aharonov–Bohm Effects: Variations on a Subtle Theme

On the Cover: The notion, introduced 50 years ago, that electrons could be affected by electromagnetic potentials without coming in contact with actual force fields was received with a skepticism that has spawned a flourishing of experimental tests and expansions of the original idea.

Herman Batelaan and Akira Tonomura. Sept 2009. The Aharonov–Bohm effects: Variations on a subtle theme. Physics Today 62(9).

Herman Batelaan is professor of physics and astronomy.

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