Physics
- Math
Color-changing fibers help reveal mysteries of how knots work
Experiments with colorful fibers helped scientists discover a few simple rules behind knots’ varying strengths.
- Space
2019 brought us the first image of a black hole. A movie may be next
The Event Horizon Telescope team is gearing up for more black hole discoveries.
- Quantum Physics
Google claimed quantum supremacy in 2019 — and sparked controversy
Google’s quantum computer outperformed the most powerful supercomputer on a task, the company reported. But some scientists aren’t fully convinced.
- Quantum Physics
Quantum jitter lets heat travel across a vacuum
In a first, scientists observed tiny, vibrating membranes exchanging heat due to quantum fluctuations.
- Space
Electric charges on dust grains may help explain how planets are born
In an experiment, glass beads clung together like protoplanetary dust particles when shaken and flung more than 100 meters skyward.
- Quantum Physics
A new, theoretical type of time crystal could run without outside help
The idea tiptoes closer to the original concept of time crystals, first proposed in 2012.
- Physics
Mounting evidence suggests neutrinos are key to why antimatter is rare
The source of matter’s dominance over antimatter might be revealed by the tiny subatomic particles.
- Materials Science
Lead becomes stronger than steel under extreme pressures
Lead is a soft metal, easily scratched with a fingernail. But that changes dramatically when the metal is compressed under high pressures.
- Tech
A tiny switch could redirect light between computer chips in mere nanoseconds
Microscopic switches that ferry information using light, not electric current, could help create better, faster electronics.
- Physics
Trapping atoms in a laser beam offers a new way to measure gravity
A new type of experiment to measure the strength of Earth’s gravity uses atoms suspended in light rather than free-falling atoms.
- Tech
The first artificial material that follows sunlight may upgrade solar panels
Rows of tiny stemlike rods called SunBOTs orient themselves toward light, optimizing the solar energy that they can harvest.
- Chemistry
Molecular jiggling may explain why some solids shrink when heated
Scientists may have figured out how scandium fluoride crystals shrink as temperature rises, possibly leading to new insights into superconductors.
