Physics
- Chemistry
Scientists Say: Metal
Metals are substances that can be elements, alloys or compounds. They all conduct heat and electricity and can be formed into different shapes.
- Computing
New device gets power from 5G signals grabbed from the air
A new way to harvest electricity relies on a tiny array of antennas and a lens. Together, they collect and focus 5G signals coming from any direction.
- Physics
Why big nuts always rise to the top
X-rays scans of a box of mixed nuts now reveal why large Brazil nuts rise to the top.
- Chemistry
Copper ‘foam’ could be used as filters for COVID-19 masks
The lightweight new material could serve as a washable and recyclable, eco-friendly alternative for many current mask filters.
- Physics
Raindrops on alien worlds will obey Earth-like rules
Their size will be similar no matter what they’re made of or on which planet they fall, a new analysis finds.
- 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.
- Physics
Scientists discover likely source of the moon’s faint yellow tail
These sodium atoms are part of the debris kicked up from the moon’s surface, mostly by micrometeorites, two new studies conclude.
- Earth
Light levitation might help explore Earth’s ‘ignorosphere’
A toy called a light mill inspired researchers to invent a new way to fly. They’re using light to levitate small nanotube-coated discs.
- Health & Medicine
Bandages made from crab shells speed healing
The chitin in seafood wastes, insect “bones” and fungi is a chemist’s dream. Used in a new medical dressing, it beats regular gauze for wound healing.
- Physics
Getting cozy with a science experiment
Items you use in your home can inspire a scientific experiment.
- Physics
Scientists Say: Acceleration
Acceleration is a change in velocity. That could mean a change in speed or in direction.
- Physics
Scientists Say: Radiation
Radiation is the motion of energy through space as waves or particles.
