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. Planets

    In a first, telescopes have caught a star eating a planet

    A burst of light and a cloud of dust are signs that a distant star swallowed a giant planet.

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  2. Tech

    Nanocrystal ‘painted’ films may someday help relieve summer heat

    The rainbow palette and cooling powers of new plant-based films comes from their microscopic surface patterns of tiny crystals.

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  3. Physics

    Explainer: Reflection, refraction and the power of lenses

    The inner workings of microscopes, telescopes, eyeglasses and other lens-based devices rely on two important laws of optics.

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  4. Tech

    A device spots and counts honeybees hosting a dangerous parasite

    At Regeneron ISEF, three teens debuted an infrared system to detect honeybees carrying mites. It can show beekeepers when a colony needs to be treated.

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  5. Physics

    A powerful laser can control the paths that lightning takes

    In a mountaintop experiment, a laser beamed at the sky created a virtual lightning rod that snagged several bolts.

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  6. Tech

    Think of this new tech as sunglasses for our windows

    Keeping buildings cool can use a lot of energy. Thanks to quantum computing, engineers designed a coating to cut the warming light that enters windows.

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  7. Materials Science

    Let’s learn about piezoelectric materials

    Piezoelectric materials turn mechanical energy into electrical energy — and vice versa.

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  8. Computing

    A single chip like this could transmit a world’s worth of data

    The internet has a big environmental footprint. But this new type of tech could help reduce the climate impact of computing.

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  9. Physics

    In a breakthrough experiment, fusion gave off more energy than it used

    The sun creates energy through nuclear fusion. Now scientists have too. This achievement raises hopes for developing a new type of clean energy.

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  10. Earth

    Scientists Say: Seismology

    Seismology is the branch of science focused on seismic waves — vibrations that run through or around Earth.

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  11. Chemistry

    Was that fingerprint left during a crime? A new test may answer that

    In what could be a boon to forensics, Iowa State University chemists have come up with a way to analyze the age of fingerprints.

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  12. Tech

    Will the internet soon reach the one-third of people without it?  

    Access to the internet is a human right, yet much of the world can’t get online. New tech has to be affordable and usable to end this digital divide.

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