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Cover:  More than 400 separate satellite images went into this view of Earth's city lights. The images were acquired between 1 October 1994 and 31 March 1995 on low-moonlight, cloud-free nights by the Defense Meteorological Satellite Program. Nonlinear scaling and other image processing techniques were used to enhance the contrast. These data came from a joint effort between Marc Imhoff of NASA's Goddard Space Flight Center and Christopher Elvidge of NOAA's National Geophysical Data Center. The image was produced by Craig Mayhew and Robert Simmon of NASA/GSFC.

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Physics Today -- April 2002

Volume 55, Issue 4, pp. 9-93

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  • ARTICLES
  • PHYSICS UPDATE
  • LETTERS
  • SEARCH AND DISCOVERY
  • ISSUES AND EVENTS
  • BOOKS
  • NEW PRODUCTS
  • WE HEAR THAT
  • OBITUARIES
    •

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    ARTICLES

      Meeting Energy Challenges: Technology and Policy
      Effectively addressing today's energy challenges requires advanced technologies along with policies that influence economic markets while advancing the public good.
      Ernest J. Moniz and Melanie A. Kenderdine
      pp. 40-47
      Abstract    Full Text: [ HTML   PDF (269 kB)  ]   

      Physics in Oil Exploration
      Petroleum engineers use a variety of physical techniques to find and exploit petroleum reservoirs in increasingly remote and complicated geological environments.
      Brian Clark and Robert Kleinberg
      pp. 48-53
      Abstract    Full Text: [ HTML   PDF (951 kB)  ]   

      New Designs for the Nuclear Renaissance
      The next generation of nuclear power plants could help satisfy the world's energy needs and support a hydrogen-based economy.
      Gail H. Marcus and Alan E. Levin
      pp. 54-60
      Abstract    Full Text: [ HTML   PDF (1062 kB)  ]   

      Renewable Energy: Progress and Prospects
      After 25 years of dramatic technical progress, renewable energy technologies now have the potential to become major contributors to US and global energy supplies.
      Samuel F. Baldwin
      pp. 62-67
      Abstract    Full Text: [ HTML   PDF (491 kB)  ]   

      Hydrogen: The Fuel of the Future?
      Available hydrogen technologies can dramatically reduce pollution and greenhouse gas emissions. But the switch to hydrogen fuel will require strong political will.
      Joan M. Ogden
      pp. 69-75
      Abstract    Full Text: [ HTML   PDF (1136 kB)  ]   

    PHYSICS UPDATE

    LETTERS

    SEARCH AND DISCOVERY

      Skepticism Greets Claim of Bubble Fusion
      Researchers report evidence that fusion has occurred within collapsing bubbles of deuterium-containing vapor. Critics would like to see more definitive proof.
      Barbara Goss Levi
      pp. 16-18
      Abstract    Full Text: [ HTML   PDF (559 kB)  ]   

      How Fast Could Tyrannosaurus rex Run?
      A new biomechanics model finds that T. rex lacked large enough leg muscles to run fast.
      Richard Fitzgerald
      pp. 18-19
      Abstract    Full Text: [ HTML   PDF (531 kB)  ]   

      Sodium Detected in the Atmosphere of an Extrasolar Planet
      As predicted by models, sodium atoms in the atmosphere of a remote planet are abundant enough that researchers have been able to see them. But they're also scarce enough to prompt some rethinking of the models.
      Barbara Goss Levi
      pp. 19-21
      Abstract    Full Text: [ HTML   PDF (887 kB)  ]   

    ISSUES AND EVENTS

      University Research Reactors Compete for DOE Handouts
      Are nuclear science and engineering poised to rebound?
      Toni Feder
      pp. 23-25
      Abstract    Full Text: [ HTML   PDF (286 kB)  ]   

      DOE Will Stop Funding Particle Physics at Brookhaven Accelerator
      If AGS funding is restricted to nuclear physics, two ongoing experiments will be abruptly axed.
      Bertram Schwarzschild
      pp. 25-26
      Abstract    Full Text: [ HTML   PDF (177 kB)  ]   

      Bonanza for Selected Science in Ireland
      Ireland's new NSF-inspired funding agency has more money than scientists had dared hope for.
      Toni Feder
      pp. 26-27
      Abstract    Full Text: [ HTML   PDF (251 kB)  ]   

      Special Report: Terrorism Drives Bush R&D Money to Defense and NIH; Other Science Funding Flat in Fiscal 2003
      The physical sciences are an alsoran in the Bush administration's priorities for science spending, but many in Congress hope to restore balance to the government's science portfolio.
      Jim Dawson and Paul Guinnessy
      pp. 30-36
      Abstract    Full Text: [ HTML   PDF (983 kB)  ]   

    BOOKS

    NEW PRODUCTS

    WE HEAR THAT

      Educators Honored by AAPT

      p. 89
      Abstract    Full Text: [ HTML   PDF (468 kB)  ]   

      Young International Scientists Garner New Award

      p. 89
      Abstract    Full Text: [ HTML   PDF (468 kB)  ]   

      Franklin Medals to Be Awarded

      pp. 89-90
      Abstract    Full Text: [ HTML   PDF (486 kB)  ]   

      OSA Presents Awards for Engineering Excellence

      p. 90
      Abstract    Full Text: [ HTML   PDF (462 kB)  ]   

      AGU President-Elect for 2002 is Orcutt

      pp. 90-91
      Abstract    Full Text: [ HTML   PDF (526 kB)  ]   

    OBITUARIES

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