MS-PS4-1
Use mathematical representations to describe a simple model for waves that includes how the amplitude of a wave is related to the energy in a wave.
- Physics
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.
- Physics
Let’s learn about light
Light is a form of energy that moves in waves. Some light comes in waves we can see. Other waves are invisible to us — but still affect our world.
- Space
Spotted: Milky Way’s giant gas bubbles in visible light
The bubbles have different colors, based on how the gas inside them moves. That could give clues to how the bubbles developed.
- Physics
Understanding light and other forms of energy on the move
Radiation needn’t be scary, especially if it allows us to see our family or use our cell phones. Here’s a guide to light and other types of emitted energy.
- Health & Medicine
New ultrasound treatment kills off cancer cells
Low-frequency ultrasound destroys cancer cells while leaving most healthy cells intact.
- Earth
Newfound ‘dunes’ is among weirdest of northern lights
There’s a new aurora dubbed the 'dunes.' It’s weird and joins the ranks of black auroras, STEVE and other odd natural light shows.
- Physics
Explainer: Understanding waves and wavelengths
A wave is a disturbance that moves energy from one place to another. Only energy — not matter — is transferred as a wave moves.
- 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.
- 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.
- Archaeology
Ancient Egyptian mummy tattoos come to light
A range of markings discovered on female mummies are challenging ideas about tattoo traditions in ancient Egypt.
- 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.
- 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.
