Physics
- Physics
Stretched matter goes to unusual extremes
Researchers have discovered that several unusual forms of matter with extremely high or low densities can expand laterally in one direction and contract in another when extended.
- Physics
Identity Check: Elusive neutrinos morph on Earth, as in space
Strengthening a challenge to the prevailing theory of particle physics, measurements of elusive particles called antineutrinos from nuclear reactors suggest that no neutrino types, be they matter or antimatter, have stable identities.
- Physics
Icicle waves go with the flow
A new model of icicle growth may explain the strange fact that ripples often found on those icy spikes typically sit about 1 centimeter apart, whether the icicles themselves are big or small.
- Physics
Light pulses flout sacrosanct speed limit
Faster-than-light firsts: Restless laser pulse leaves before it arrives, while merging microwaves send out a superluminal scout.
- Materials Science
Nanotube ID: New signatures aid nanotech progress
Researchers have developed a means for rapidly distinguishing among 33 semiconducting varieties of carbon nanotubes.
- Physics
Spectrum deftly takes visible light’s pulse
A rainbow path to more precise measurements of visible-light frequencies may become an express lane to unprecedented accuracy in everyday measurements for all the sciences.
- Physics
Cold War Conductor: Ultracold plutonium compound shows no resistance
Researchers studying the crystalline properties of radioactive plutonium have discovered the first plutonium-based superconductor.
- Physics
Quantum quirks quicken thorny searches
A researcher has come up with a quantum algorithm for identifying one or more items in a large, unsorted database when complete information about the search target is unavailable.
- Physics
Speedy impacts send microwave distress calls
Laboratory smash-ups mimicking those between fast-moving space debris and satellites appear to emit microwave bursts, suggesting that microwave detectors might someday prove useful for monitoring the health of spacecraft.
- Materials Science
Worm’s teeth conceal odd mineral material
A worm's teeth contain a copper mineral that could serve as a model for new materials.
- Physics
Laser links segue to chemical bonds
Light can knit matter together until other bonds take over, providing a potentially useful approach to building nanometer-scale structures and materials.
- Physics
Electron cycling in quantum confines
A lone electron zips around in the tightest circle allowed by quantum mechanics in an extraordinarily small, frigid cyclotron, potentially allowing scientists to nail down some fundamental constants of physics more precisely than ever before.
