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Issues

Letters

Physics Today 22 (4), 9 (1969); https://doi.org/10.1063/1.3035550
Physics Today 22 (4), 9–11 (1969); https://doi.org/10.1063/1.3035551
Physics Today 22 (4), 11 (1969); https://doi.org/10.1063/1.3035508
Physics Today 22 (4), 11–13 (1969); https://doi.org/10.1063/1.3035509
Physics Today 22 (4), 13–15 (1969); https://doi.org/10.1063/1.3035519
Physics Today 22 (4), 15–17 (1969); https://doi.org/10.1063/1.3035521

Phimsy

Physics Today 22 (4), 19–21 (1969); https://doi.org/10.1063/1.3035522

Articles

Physics Today 22 (4), 23–28 (1969); https://doi.org/10.1063/1.3035523

Idealized experiments show that a physical measurement involves three stages: initial state preparation, perturbation and examination for the probability that a particular final state is occupied.

Physics Today 22 (4), 30–39 (1969); https://doi.org/10.1063/1.3035524

Thermal convection within the earth's crystalline mantle provides a mechanism for large‐scale surface displacements. Oceanic ridges occur where the flow of convection cells comes up to the surface; trenches occur where it descends again.

Physics Today 22 (4), 42–44 (1969); https://doi.org/10.1063/1.3035525

Even when successive effects are not additive but rather multiply each other (as do amplification and absorption), we need additive units for convenience. Here are suggestions for simplifying nomenclature and avoiding confusion.

Physics Today 22 (4), 46–51 (1969); https://doi.org/10.1063/1.3035526

As gases condense into liquids and then solids, an order pattern develops in position space. Both superconductivity and superfluidity can be viewed as condensations in momentum space. Possibly life itself is an order pattern, perhaps in both spaces at once.

Physics Today 22 (4), 53–61 (1969); https://doi.org/10.1063/1.3035527

These highly excited compound nuclear states, observed in proton scattering from heavy nuclei, have useful applications in nuclear spectroscopy.

Search and Discovery

Physics Today 22 (4), 63 (1969); https://doi.org/10.1063/1.3035528
Physics Today 22 (4), 63 (1969); https://doi.org/10.1063/1.3035529
Physics Today 22 (4), 63–64 (1969); https://doi.org/10.1063/1.3035530
Physics Today 22 (4), 64 (1969); https://doi.org/10.1063/1.3035531
Physics Today 22 (4), 64 (1969); https://doi.org/10.1063/1.3035532
Physics Today 22 (4), 64–65 (1969); https://doi.org/10.1063/1.3035533
Physics Today 22 (4), 64 (1969); https://doi.org/10.1063/1.3035534
Physics Today 22 (4), 65–67 (1969); https://doi.org/10.1063/1.3035535

State and Society

Physics Today 22 (4), 79–80 (1969); https://doi.org/10.1063/1.3035536
Physics Today 22 (4), 80 (1969); https://doi.org/10.1063/1.3035537
Physics Today 22 (4), 80 (1969); https://doi.org/10.1063/1.3035538
Physics Today 22 (4), 80–81 (1969); https://doi.org/10.1063/1.3035539
Physics Today 22 (4), 81–83 (1969); https://doi.org/10.1063/1.3035540
Physics Today 22 (4), 83–85 (1969); https://doi.org/10.1063/1.3035541
Physics Today 22 (4), 85–87 (1969); https://doi.org/10.1063/1.3035542
Physics Today 22 (4), 87–89 (1969); https://doi.org/10.1063/1.3035543
Physics Today 22 (4), 89–91 (1969); https://doi.org/10.1063/1.3035544
Physics Today 22 (4), 91 (1969); https://doi.org/10.1063/1.3035545
Physics Today 22 (4), 91–93 (1969); https://doi.org/10.1063/1.3035546
Physics Today 22 (4), 93 (1969); https://doi.org/10.1063/1.3035547

Books

Physics Today 22 (4), 95–97 (1969); https://doi.org/10.1063/1.3035548
Physics Today 22 (4), 97–101 (1969); https://doi.org/10.1063/1.3035549
Physics Today 22 (4), 101 (1969); https://doi.org/10.1063/1.3035496
Physics Today 22 (4), 101–103 (1969); https://doi.org/10.1063/1.3035497
Physics Today 22 (4), 103–105 (1969); https://doi.org/10.1063/1.3035498
Physics Today 22 (4), 105–107 (1969); https://doi.org/10.1063/1.3035499
Physics Today 22 (4), 107 (1969); https://doi.org/10.1063/1.3035500
Physics Today 22 (4), 107–109 (1969); https://doi.org/10.1063/1.3035501
Physics Today 22 (4), 109 (1969); https://doi.org/10.1063/1.3035502
Physics Today 22 (4), 109–111 (1969); https://doi.org/10.1063/1.3035503
Physics Today 22 (4), 111–112 (1969); https://doi.org/10.1063/1.3035504
Physics Today 22 (4), 112–113 (1969); https://doi.org/10.1063/1.3035505

Meetings

Physics Today 22 (4), 115–117 (1969); https://doi.org/10.1063/1.3035506
Physics Today 22 (4), 117–121 (1969); https://doi.org/10.1063/1.3035507

We Hear That

Physics Today 22 (4), 125–127 (1969); https://doi.org/10.1063/1.4725738
Physics Today 22 (4), 127 (1969); https://doi.org/10.1063/1.3035510
Physics Today 22 (4), 127 (1969); https://doi.org/10.1063/1.3035511
Physics Today 22 (4), 127–128 (1969); https://doi.org/10.1063/1.3035512
Physics Today 22 (4), 128 (1969); https://doi.org/10.1063/1.3035513
Physics Today 22 (4), 128–129 (1969); https://doi.org/10.1063/1.3035514
Physics Today 22 (4), 129 (1969); https://doi.org/10.1063/1.3035515
Physics Today 22 (4), 129 (1969); https://doi.org/10.1063/1.3035516
Physics Today 22 (4), 129 (1969); https://doi.org/10.1063/1.3035517

Calendar

Physics Today 22 (4), 131–139 (1969); https://doi.org/10.1063/1.3035518

Editorial

Physics Today 22 (4), 144 (1969); https://doi.org/10.1063/1.3035520
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