Physics

  1. Physics

    Flying snakes wriggle their way through the air

    Flying snakes go tens of meters (yards) without wings. They do it by undulating back and forth and up and down, a new study shows.

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  2. Physics

    Scientists Say: Microgravity

    Gravity is a force that brings objects together. But when those objects get far away, the force feels small. It feels like microgravity.

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  3. Chemistry

    Scientists Say: Atom

    An atom is the smallest possible piece of a chemical element.

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  4. Brain

    Explainer: How our eyes make sense of light

    It takes a lot for images before the eyes to be 'seen.' It starts by special cells sensing the light, then signals relaying those data to the brain.

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  5. Physics

    Understanding light and other forms of energy on the move

    Radiation needn’t be scary, especially if it allows us to see our family or use our cell phones. Here’s a guide to light and other types of emitted energy.

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  6. Space

    Spotted: Milky Way’s giant gas bubbles in visible light

    The bubbles have different colors, based on how the gas inside them moves. That could give clues to how the bubbles developed.

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  7. Physics

    Shape-shifting cuts give shoes a better grip

    With pop-out structures inspired by kirigami and animals, a shoe sole goes from flat to spiky to boost friction on slippery surfaces such as ice.

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  8. Physics

    A contrast between shadows and light can now generate electricity

    A new device exploits the contrast between bright spots and shade to produce a current that can power small electronics.

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  9. Space

    Oldest disk galaxy puts a new spin on galaxy growth

    A spinning disk galaxy has been found in the early universe. Its existence is a surprise.

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  10. Chemistry

    Working up a sweat may one day power up a device

    Tech that turns sweat into power may make for greener gadgets. A new device uses perspiration to charge a supercapacitor and run a sensor.

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  11. Chemistry

    Scientists Say: Polymer

    Polymers can be natural or man-made, but they are all big molecules made up of smaller units linked together.

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  12. Plants

    Silk-based microneedles may help treat diseased plants

    Engineers have invented silk microneedles to inject medicines into plants. One day farmers might use drones to dart their sick plants with meds from the air.

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