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Issues
October 1991
ISSN 0031-9228
EISSN 1945-0699
Letters
Honor Compton with a Postage Stamp
Physics Today 44 (10), 150–154 (1991);
https://doi.org/10.1063/1.2810310
Search and Discovery
Articles
Unification of Couplings
Physics Today 44 (10), 25–33 (1991);
https://doi.org/10.1063/1.881292
Recent high‐precision experimental results support the predictions of the minimal supersymmetric SU(5) model that unifies electromagnetism and the weak and strong interactions.
Decoherence and the Transition from Quantum to Classical
Physics Today 44 (10), 36–44 (1991);
https://doi.org/10.1063/1.881293
The environment surrounding a quantum system can, in effect, monitor some of the system's observobles. As a result, the eigenstates of those observables continuously decohere and can behave like classical states.
Through a Beer Glass Darkly
Physics Today 44 (10), 48–52 (1991);
https://doi.org/10.1063/1.881294
Although many of us think of beer as an enjoyable after‐work refreshment, others consider the physics and chemistry of beer to be serious—well, mostly serious—business.
Meetings
Washington Reports
Physics Community
Opinion
Books
Optical Computer Architectures: The Application of Optical Concepts to Next Generation Computers
Physics Today 44 (10), 118–120 (1991);
https://doi.org/10.1063/1.2810295
