Physics

  1. Physics

    Explainer: Understanding electricity

    Here’s what allows you to plug in and power up the devices in your life.

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  2. Life

    Scientists Say: Experiment

    An experiment is a set of procedures to learn about the world — and an important part of the scientific process.

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  3. Physics

    Here’s why ducklings swim in a row behind mom

    Baby ducks save energy by surfing their mother’s waves, but only if they do it in an orderly line.

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  4. Physics

    Future cars may offer personal sound zones — no earphones needed

    Zones that offer each passenger personal listening are closer to reality. A new design improves performance by adapting to the conditions in your car.

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  5. Materials Science

    Analyze This: Hardened wood can make sharp steak knives

    Researchers treated wood to make it hard and dense. Out of it, they carved sharp knives and nails that could substitute for ones made of steel.

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  6. Materials Science

    These colorful butterflies were printed with transparent ink

    Clear ink creates a whole rainbow of colors when printed in precise, microscopic patterns. This phenomenon is known as structural color.

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  7. Physics

    Scientists Say: Convection

    Convection is a process that transfers heat through the movement of liquid or gas.

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  8. Materials Science

    Bacteria make ‘spider silk’ that’s stronger than steel

    Part spider silk, the material is better than what some spiders make. Researchers think it might make the basis for surgical threads or unusually strong fabrics.

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  9. Earth

    Here’s how ice needles can sculpt natural rock art

    Striking stone patterns adorn remote cold landscapes the world over. The recipe for these adornments: Freeze, thaw, repeat.

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  10. Chemistry

    Scientists Say: Electron

    Electrons are negatively charged particles. They are attracted to the positively charged particles in the center, or nucleus, of an atom.

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  11. Animals

    A spider’s feet hold a hairy, sticky secret

    Their widespread stickiness traces to the shape of hairs on its feet, scientists now find.

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  12. Space

    Explainer: How auroras light up the sky

    The northern and southern lights are considered natural wonders of the world. Here’s how these and related splendid sky glows form.

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