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

  1. Space

    Radio telescope picks up signals from intelligent life

    Astronomers tracked down the source of perytons, mysterious radio bursts. They had at first seemed to emanate from Earth’s atmosphere. Probing now suggests the life forms responsible had a penchant for leftovers.

  2. Space

    Galaxy cluster creates ‘magnifying glass’ in space

    A massive galaxy’s gravity is so strong that it bends light, creating a “lens” in space. This natural magnifying glass is giving astronomers a rare view of a supernova on the other side of the universe.

  3. Food can make an appetizing science fair project

    Many students think they need a laboratory or special equipment for a winning research project. But finalists at the Broadcom MASTERS competition showed food-based research may require little more than your home kitchen

  4. Physics

    Comic book heroine teaches science

    Most people don’t think of superheroes as science teachers. But a comic book from the American Physical Society wants to change that. Meet Spectra, the human laser.

  5. Health & Medicine

    Sunlight makes pleasure chemical in the body

    A day on the beach might deliver more than a tan (or sunburn). It may also release potent brain chemicals that leave people with a pleasurable feeling.

  6. Animals

    Cool Jobs: A whale of a time

    Studying blue whales, spinner dolphins and other cetaceans demands clever ways to unveil the out-of-sight behaviors of these marine denizens.

  7. Physics

    Hazing: How to hide in nearly plain sight

    A new system takes advantage of a translucent fog of particles to hide otherwise obvious objects.

  8. Tech

    Digital lighting goes organic

    An environmentally friendly lighting technology promises not only to save energy but also to transform our indoor environment.

  9. Tech

    Fighting theater pirates

    How can theaters thwart thieves from unlawfully recording a movie during a showing? A high-school freshman’s low-cost solution relies on simple physics.

  10. Physics

    Student radiation experiment goes to space

    The Exploration Design Challenge asked students to design shields that would protect astronauts from radiation. Teachers can still involve classes in the challenge.

  11. Physics

    World’s coolest ‘clock’ is also crazy-accurate

    This is the time to beat — the world’s most accurate atomic clock ever. At its heart is a ‘fountain’ of cesium atoms chilled nearly to absolute zero!

  12. Physics

    Sending student science to space

    Two teachers describe how they worked with the Student Spaceflight Experiments Program to get middle-school scientists excited about research and space.