Physics

  1. Physics

    Force from empty space drives a machine

    A novel micromachine uses quantum fluctuations of empty space to help drive its motion.

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  2. Physics

    Voltage flip turns magnetism on, off

    Researchers in Japan have made a material whose inherent magnetism can be turned off and on electrically, as long as the material, a novel semiconductor, stays ultracold.

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  3. Physics

    Collider is cookin’, but is it soup?

    By making the densest, hottest matter ever in a lab, smashups between fast-moving nuclei in the Relativistic Heavy Ion Collider are coming closer than ever to reproducing the superhot, primordial fluid that presumably filled the universe immediately after the Big Bang.

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  4. Physics

    Light Stands Still in Atom Clouds

    Ordinarily in continuous motion, light pulses come to a dead stop in specially prepared atom clouds.

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  5. Physics

    From the January 24, 1931, issue

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  6. Physics

    Magnetic Whispers

    Promising new ways to magnetically probe tissues and substances are emerging now that a small research group has proved their once-ridiculed claim of a flaw in the 50-year-old theory behind magnetic resonance imaging (MRI) and similar analytic techniques.

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  7. Materials Science

    Soybeans could beef up plywood glues

    Researchers have replaced animal protein with soybean protein in experimental plywood glue, potentially reducing cost and health worries.

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  8. Physics

    Heating, simulations get the drop on drips

    Air can buoy a layer of oil and, perhaps, even water leaking through a ceiling, if the air is relatively warm compared with the liquid.

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  9. Physics

    Celebrating the laser

    An introduction to the special section on lasers.

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  10. Tech

    Beatin’ Those Low-Life Blue-Laser Blues

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  11. Particle Physics

    A World-Class Accelerator

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