Tech
Magnetic fields melt and re-form new shape-shifting devices
Miniature machines made of gallium and magnetic particles can switch from solid to liquid and back.
HS-PS2-5
Plan and conduct an investigation to provide evidence that an electric current can produce a magnetic field and that a changing magnetic field can produce an electric current.
More Stories in HS-PS2-5
- Earth
Scientists Say: Pole
A pole is either of two opposite ends of a molecule, magnet, battery, planet or other object.
- Physics
Scientists Say: Force
When an object experiences a force, its change in motion — or acceleration — depends on its mass.
- Physics
Staying grounded in space requires artificial gravity
On TV, people in space walk around like they’re on Earth. How can science give real astronauts artificial gravity? Spin right round, baby.
- Science & Society
Batteries not included: This Game Boy look-alike doesn’t need them
Game Boy revolutionized the gaming industry. A newer version could help slow the rate of climate change.
- Chemistry
Batteries should not burst into flames
Because lithium-ion batteries power modern life, they need to store a lot of energy. Now scientists are focusing on making them safer.
- Climate
Hotspots found for lightning’s superbolts
A nine-year survey reveals where and when the most energetic lightning strikes — and it’s not what scientists expected.
- Physics
Explainer: How batteries and capacitors differ
Both batteries and capacitors can power electronic devices. Each, however, has different properties which may provide benefits — or limitations.
- Climate
This planet’s lightning storms are like nothing on Earth
Radio waves from a faraway exoplanet could signal intense lightning storms there.
- Animals
The shocking electric eel!
Electric eels are fascinating animals. Their powerful zaps can act like a radar system, trick fish into revealing their location and then freeze their prey’s movements.
