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Issues

Reference Frame

Physics Today 46 (4), 9–11 (1993); https://doi.org/10.1063/1.2808859

Letters

Physics Today 46 (4), 13–90 (1993); https://doi.org/10.1063/1.2808860
Physics Today 46 (4), 90 (1993); https://doi.org/10.1063/1.2808888
Physics Today 46 (4), 90–91 (1993); https://doi.org/10.1063/1.2808889
Physics Today 46 (4), 91–92 (1993); https://doi.org/10.1063/1.2808890
Physics Today 46 (4), 92 (1993); https://doi.org/10.1063/1.2808891
Physics Today 46 (4), 92 (1993); https://doi.org/10.1063/1.2808892

Search and Discovery

Physics Today 46 (4), 17–18 (1993); https://doi.org/10.1063/1.2808861
Physics Today 46 (4), 18–20 (1993); https://doi.org/10.1063/1.2808862

Articles

Physics Today 46 (4), 22–29 (1993); https://doi.org/10.1063/1.881387

Planet formation used to be a subject for speculative natural history. Now it is an active field of observational astronomy, and the evidence is that planetary systems are abundant.

Physics Today 46 (4), 32–37 (1993); https://doi.org/10.1063/1.881388

Models are being developed for o new calculus‐based introductory physics course that would incorporate more 20th‐century physics.

Career Choices

Physics Today 46 (4), 39–40 (1993); https://doi.org/10.1063/1.2808863

Washington Reports

Physics Today 46 (4), 43–46 (1993); https://doi.org/10.1063/1.2808864

Physics Community

Physics Today 46 (4), 49–51 (1993); https://doi.org/10.1063/1.2808865
Physics Today 46 (4), 51 (1993); https://doi.org/10.1063/1.2808866
Physics Today 46 (4), 51 (1993); https://doi.org/10.1063/1.2808867
Physics Today 46 (4), 51 (1993); https://doi.org/10.1063/1.2808868
Physics Today 46 (4), 51 (1993); https://doi.org/10.1063/1.2808869

Opinion

Physics Today 46 (4), 55 (1993); https://doi.org/10.1063/1.2808870

Books

Physics Today 46 (4), 59 (1993); https://doi.org/10.1063/1.2808871
Physics Today 46 (4), 60–62 (1993); https://doi.org/10.1063/1.2808872
Physics Today 46 (4), 62 (1993); https://doi.org/10.1063/1.2808873
Physics Today 46 (4), 62–63 (1993); https://doi.org/10.1063/1.2808874
Physics Today 46 (4), 63 (1993); https://doi.org/10.1063/1.2808875
Physics Today 46 (4), 63–64 (1993); https://doi.org/10.1063/1.2808876
Physics Today 46 (4), 64 (1993); https://doi.org/10.1063/1.2808877
Physics Today 46 (4), 64 (1993); https://doi.org/10.1063/1.2808878

New Products

Physics Today 46 (4), 71–73 (1993); https://doi.org/10.1063/1.2808879

We Hear That

Physics Today 46 (4), 75 (1993); https://doi.org/10.1063/1.2808880
Physics Today 46 (4), 75 (1993); https://doi.org/10.1063/1.2808881
Physics Today 46 (4), 76 (1993); https://doi.org/10.1063/1.2808882

Obituaries

Physics Today 46 (4), 76 (1993); https://doi.org/10.1063/1.2808883
Physics Today 46 (4), 77 (1993); https://doi.org/10.1063/1.2808884
Physics Today 46 (4), 77 (1993); https://doi.org/10.1063/1.2808885
Physics Today 46 (4), 77–78 (1993); https://doi.org/10.1063/1.2808886
Physics Today 46 (4), 78 (1993); https://doi.org/10.1063/1.2808887
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