HS-PS4-1

Use mathematical representations to support a claim regarding relationships among the frequency, wavelength, and speed of waves traveling in various media.

  1. Physics

    Giving Notre Dame back her unique voice

    A 2019 fire robbed Paris’ Notre Dame cathedral of more than her roof. She also lost her voice. Now scientists are using acoustics to return her unique soundscape.

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  2. Physics

    Here’s how quantum mechanics lets heat cross a vacuum

    Heat can move across a vacuum if the span is small enough. As in really, really small. In a new experiment, the gap was only a few hundred nanometers.

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  3. Animals

    Whales echolocate with big clicks and tiny amounts of air

    Toothed whales may echolocate using bits of air that they recycle inside their heads to conserve both air and energy.

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  4. Earth

    Explainer: Earth — layer by layer

    Explore the sizzling heat, unimaginable pressures — and some surprise diamonds — that sit beneath our feet. This is the side of Earth that you can’t see.

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  5. Health & Medicine

    Explainer: What is ultrasound?

    These sound waves, which fall above the range of human hearing, are important in medicine, medical imaging and more.

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  6. Tech

    New eyewear could help the visually impaired

    Young inventors develop novel electronics to help people identify colors and navigate obstacles.

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  7. Science & Society

    Heating up the search for hidden weapons

    Using an off-the-shelf camera and an innovative bit of software, a high-school student developed the means to inexpensively detect a hidden weapon.

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  8. Protecting deer with high-pitched noises

    After her uncle crashed his truck into a deer, this teen decided to find out if there was a sound that would drive the animals away from roads.

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  9. Earth

    Explainer: Seismic waves come in different ‘flavors’

    Earthquakes generate several different types of seismic waves, some more damaging than others

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  10. Physics

    Disabilities don’t stop these experts in science and tech

    People with disabilities are as varied as the careers some of them pursue in science, technology, engineering and math.

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  11. Physics

    Scientists Say: Acoustic

    Acoustic is an adjective used to describe something involving sound. It’s also a noun that refers to the branch of physics that studies sound.

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  12. Physics

    Gravitational waves detected yet again

    For the third time in 16 months, scientists have announced detection of gravitational waves washing over the spacetime environment in which Earth resides. This seems to show that such waves may not be rare.

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