Physics
Physics explains why gold stays pristine
Metals like copper oxidize — reacting with oxygen in the air — but gold doesn’t, thanks to a quick switch in atom arrangement on its surface.
Physics
We summarize the week's scientific breakthroughs every Thursday.
More Stories in Physics
- Physics
To get string theory, you need only four physics assumptions
Tenets of quantum mechanics and special relativity, among other theoretical ideas, lead inexorably to string theory.
- Particle Physics
To understand black holes, physicists turn to a mathematical ‘Rosetta stone’
A link between particle physics and gravity equations, called the double copy, applies to Hawking radiation, creating a new way into black hole puzzles.
- Quantum Physics
A grapefruit-sized quantum device mapped Earth’s magnetic field from space
On the International Space Station, a cube holding a diamond-based sensor revealed the potential for quantum magnetometers.
- Physics
The secret to perfect espresso? It’s physics
Inspired by gas and liquid flow in earth science, researchers brewed an equation to calculate the speed of water percolation through ground coffee.
- Particle Physics
A strange ‘neutrino force’ helped heal a crack in particle physics
A neglected force produced by neutrinos and other particles helps atomic physics measurements align with predictions of the standard model.
- Physics
A new measurement reveals gravity is still hard to pin down
After a 10-year effort, physicists got a value for “Big G” that does not settle the debate over one of nature’s hardest numbers to nail down.
- Cosmology
Exploding black holes could explain an antimatter mystery
Shock waves from tiny black holes in the early universe could explain how antimatter became so rare while matter is common.
- Quantum Physics
Just 10,000 quantum bits might crack internet encryption schemes
Quantum computers based on atoms could provide access to encrypted data much sooner than scientists thought.
- Quantum Physics
Quantum physics can confirm where someone is located
The concept of entanglement links far-flung particles. That relationship can prove that someone is in the location they claim to be.
