Physics
- Physics
Light’s Hidden Holdup: Reflected laser beams loiter a little
Using an ultrashort pulse laser, physicists have measured a minuscule time delay that affects light reflecting off many surfaces.
- Materials Science
Nanostructures mimic Inuit stone sculptures
Chemists have created nanoscale versions Inuit rock sculptures, an advance that could facilitate the development of next-generation sensors and electronic devices.
- Materials Science
Slick Surfaces: Pressure builds to make better motor oils
Motor oil's protection against the wear and tear of steel engine parts takes effect only at high pressures.
- Physics
Primordial Nukes
The rocky remains of nuclear reactors that formed spontaneously in African uranium deposits 2 billion years ago are yielding striking new details about their operation as well as signs that a fundamental aspect of the universe may have once been stronger than it is today.
- Materials Science
Venetian Grinds
Venetian Renaissance artists, renowned for their vibrant colors, mixed powdered glass with their paints in an attempt to expand their palettes and create unique optical effects.
- Physics
Brutal Bubbles: Collapsing orbs rip apart atoms
Spikes of heat and pressure in sonoluminescence caused by the implosions of light-emitting bubbles in liquids can strip atoms of electrons.
- Physics
Particle Physics Phun
An array of games, such as Particle Pinball and Race for Energy, challenge visitors at a Web site hosted by the high-energy physics center known as the Fermi National Accelerator Laboratory. Aimed at kids, the “Fermilabyrinth” pages introduce players to a zoo of elementary particles while it exercises pattern-recognition skills that scientists use to spot […]
- Physics
Electronic Soup: Molecules in acid broth act as circuit parts
An electronically promising molecule functions well in acid as a tiny amplifier, underscoring the importance of controlling molecules' electrochemical environments to achieve predictable performance.
- Physics
A quantum fluid pipes up
After 40 years of trying, physicists have heard a quantum-mechanical whistle emanating from two reservoirs of oscillating liquid helium separated by a perforated membrane.
- Physics
Dial-a-Splash: Thin air quells liquid splatter
How much liquids splatter when drops hit surfaces depends on the surrounding air pressure.
- Materials Science
Tiles stack for shell strength in abalone
In abalone shells, microscopic tiles of calcium carbonate stack on top of each other in a highly ordered arrangement to create a superstrong material.
- Physics
Putting a new spin on silicon
Embedding ions of manganese in silicon imparts a magnetic field to the otherwise nonmagnetic semiconductor.
