Physics

  1. Chemistry

    Extreme pressure? Diamonds can take it

    Diamond retains its structure even at extreme pressures, which could reveal how carbon behaves in the cores of some exoplanets.

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  2. Earth

    Explainer: What are aerosols?

    We may not see them, but tiny particles and droplets cloud the air, affecting its properties. Some may be pollutants, others all-natural products.

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  3. Materials Science

    Super-absorbent swab could curb errors in COVID-19 testing

    A new super-absorbent swab could cut down on false negatives from COVID-19 testing. And that could help slow spread of the disease.

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  4. Physics

    Scientists Say: Piezoelectric

    Piezoelectric materials produce an electric voltage when they are bent or squished. This can let us harvest electricity from movement.

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  5. Physics

    Physicists have clocked the shortest time span ever

    The experiment revealed how long it takes light to cross a hydrogen molecule: just a couple hundred zeptoseconds.

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  6. Physics

    What did you say? Fabric masks can really muffle voices

    Some types of face masks muffle speech more than others — something that teachers should take into account.

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  7. Agriculture

    Dew collector brings water to thirsty plants

    This invention grabs water from the air at night. All it needs is the sun’s warmth the next day to release that moisture to growing plants.

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  8. Physics

    Let’s learn about gravity

    Gravity is an attraction between objects with mass. The more massive the object, the more gravity it’s got.

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  9. Tech

    Bye-bye batteries? Power a phone with fabric or a beacon with sound

    New piezoelectric systems produce electricity in unusual ways, such as when a certain nylon bends or underwater ceramics vibrate.

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  10. Chemistry

    A soil-based ‘concrete’ could make buildings green, even on Mars

    A new soil-based material offers an alternative to concrete for 3-D printing environmentally friendly buildings.

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  11. Tech

    Flexible devices may help clothes solar power your screens

    A fluorescent polymer duo boosts the efficiency of solar cells. One day this material may coat your jacket, hat or backpack to provide power on the go.

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  12. Physics

    Researchers reveal the secret to the perfect football throw

    The tip of a spiraling football follows the ball’s path. If you know a thing or two about gyroscopes, this is not what you’d expect.

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