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Readers’ Forum

Physics Today 67 (4), 8 (2014); https://doi.org/10.1063/PT.3.2324
Physics Today 67 (4), 8 (2014); https://doi.org/10.1063/PT.3.2325
Physics Today 67 (4), 8–10 (2014); https://doi.org/10.1063/PT.3.2326
Physics Today 67 (4), 10 (2014); https://doi.org/10.1063/PT.3.2327
Physics Today 67 (4), 10 (2014); https://doi.org/10.1063/PT.3.2328
Physics Today 67 (4), 10–11 (2014); https://doi.org/10.1063/PT.3.2329
Physics Today 67 (4), 12 (2014); https://doi.org/10.1063/PT.3.2330
Physics Today 67 (4), 12 (2014); https://doi.org/10.1063/PT.3.2331
Physics Today 67 (4), 12 (2014); https://doi.org/10.1063/PT.3.2332
Physics Today 67 (4), 13 (2014); https://doi.org/10.1063/PT.3.2333

Search and Discovery

Physics Today 67 (4), 15–17 (2014); https://doi.org/10.1063/PT.3.2334

A new null result challenges favored expansions of particle theory’s standard model.

Physics Today 67 (4), 17–19 (2014); https://doi.org/10.1063/PT.3.2335

For the first time, it’s possible to create depth-resolved images of a painting without damaging it.

Physics Today 67 (4), 19–21 (2014); https://doi.org/10.1063/PT.3.2336

Precise measurements of fluctuations and correlations in gene expression levels reveal some striking behavior.

Physics Today 67 (4), 20 (2014); https://doi.org/10.1063/PT.3.2337
Physics Today 67 (4), 20–21 (2014); https://doi.org/10.1063/PT.3.2338
Physics Today 67 (4), 21 (2014); https://doi.org/10.1063/PT.3.2339

Issues and Events

Physics Today 67 (4), 22–23 (2014); https://doi.org/10.1063/PT.3.2340

With ionospheric modification, scientists can do plasma-physics experiments that are impossible in the lab.

Physics Today 67 (4), 24 (2014); https://doi.org/10.1063/PT.3.2341
Physics Today 67 (4), 24–26 (2014); https://doi.org/10.1063/PT.3.2342

The agency is funding more than 20 projects, including flow batteries, aimed at reducing the cost of storing energy from wind and solar sources and smoothing variations in peak power generation.

Physics Today 67 (4), 26 (2014); https://doi.org/10.1063/PT.3.2343
Physics Today 67 (4), 26–27 (2014); https://doi.org/10.1063/PT.3.2344
Physics Today 67 (4), 27 (2014); https://doi.org/10.1063/PT.3.2345

Articles

Physics Today 67 (4), 28–33 (2014); https://doi.org/10.1063/PT.3.2346

The Dark Energy Survey’s map of 200 million galaxies will help determine if cosmic acceleration is driven by a cosmological constant, by a new and dynamic form of energy, or by physics beyond the scope of general relativity.

Physics Today 67 (4), 35–40 (2014); https://doi.org/10.1063/PT.3.2347

Scientific measurements of sound generation and radiation by musical instruments are surprisingly hard to correlate with the subtle and complex judgments of instrumental quality made by expert musicians.

Physics Today 67 (4), 41–46 (2014); https://doi.org/10.1063/PT.3.2348

Despite progress in reducing stockpiles after the end of the Cold War, the disturbing actions of some nations could spread nuclear weapon capabilities and enlarge existing arsenals.

Books

Physics Today 67 (4), 48 (2014); https://doi.org/10.1063/PT.3.2349
Physics Today 67 (4), 48–50 (2014); https://doi.org/10.1063/PT.3.2350
Physics Today 67 (4), 50–51 (2014); https://doi.org/10.1063/PT.3.2351
Physics Today 67 (4), 51–52 (2014); https://doi.org/10.1063/PT.3.2352
Physics Today 67 (4), 52–55 (2014); https://doi.org/10.1063/PT.3.2353

New Products

Physics Today 67 (4), 56–58 (2014); https://doi.org/10.1063/PT.3.2354

Obituaries

In Special Collection: Print Obituaries
Physics Today 67 (4), 61 (2014); https://doi.org/10.1063/PT.3.2355
In Special Collection: Print Obituaries
Physics Today 67 (4), 61–62 (2014); https://doi.org/10.1063/PT.3.2356

Quick Study

Physics Today 67 (4), 64–65 (2014); https://doi.org/10.1063/PT.3.2357

In October 2012 Felix Baumgartner fell farther and faster than anyone before him. The forces he experienced during his flight can be readily analyzed, thanks to the GPS data collected during his jump.

Back Scatter

Physics Today 67 (4), 72 (2014); https://doi.org/10.1063/PT.3.2358
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