feed info

223,390 articles from PhysOrg

Shuttle Discovery at Launch Pad

With space shuttle Discovery now at its launch pad at NASA's Kennedy Space Center, the next major milestone for the upcoming STS-120 mission is a full launch dress rehearsal.

Simple Data Transfer at Home with Powerline

Siemens is now offering a Powerline adapter for fast transmission of DSL data around the home. The Gigaset HomePlug AV 200 makes setting up a home network a simple task, even for adults without any technical knowledge.

Software 'Chipper' Speeds Debugging

Computer scientists at UC Davis have developed a technique to speed up program debugging by automatically "chipping" the software into smaller pieces so that bugs can be isolated more easily.

Laser joining of solar cells

A single solar cell produces a relatively low output - it`s a case of strength in numbers. Tiny strips of metal are used to link cells together. If the laser soldering temperature is too high, the solder joint may fracture. A new system provides automatic temperature regulation.

New particles get a mass boost

A sophisticated, new analysis has revealed that the next frontier in particle physics is farther away than once thought. New forms of matter not predicted by the Standard Model of particle physics are most likely twice as massive as theorists had previously calculated, according to a just-published study.

Watermarks for mobile television

For centuries, watermarks have protected written documents from forgery. Now their digital brothers are to prevent videos from being released in the Internet before their television premieres. Electronic watermarks are used to locate leaks.

Genetic differences in clover make one type toxic

That clover necklace you make for your child could well be a ring of poison. That`s because some clovers have evolved genes that help the plant produce cyanide - to protect itself against little herbivores, such as snails, slugs and voles, that eat clover. Other clover plants that do not make cyanide are found in climates with colder temperatures. So, in picking your poison, er, clover, ecology...

NASA satellite sees solar hurricane detach comet tail

A NASA satellite has captured the first images of a collision between a comet and a solar hurricane. It is the first time scientists have witnessed such an event on another cosmic body. One of NASA's pair of Solar Terrestrial Relations Observatory satellites, known as STEREO, recorded the event April 20.

Scientists claim citrus originated in Australasia

Scientists at the Centre for Plant and Food Science at the University of Western Sydney have questioned the long-established perception that citrus originated in Southeast Asia. They believe it may have originated closer to home - in Australia, New Caledonia and New Guinea.

Three-way mating game of North American lizard found in distant European relative

An intricate three-way mating struggle first observed in a species of North American lizard has been discovered in a distant relative, the European common lizard. The two species are separated by 5,000 miles and 175 million years of evolution, yet they share behavioral and reproductive details right down to the gaudy colors of the males, according to new research published in the November issue of...

Asking the Boss for a Raise

Waiting until your boss is in a good mood to ask for a raise may be a popular strategy, but what if the boss knows you know she is a good mood?

Good Vibrations: Using Terahertz Radiation to Control Material Properties

A collaboration led by researchers with the U.S. Department of Energy`s Lawrence Berkeley National Laboratory has used molecular vibrations, triggered by ultrafast pulses of terahertz radiation, to change a manganite crystal from an electrical insulator into a conductor. The ability to induce dramatic phase-changes in solid materials through select vibrations holds great promise for future...

Americans consider global warming an urgent threat, according to poll

A growing number of Americans consider global warming an important threat that calls for drastic action, and 40% say that a presidential candidate`s position on the issue will strongly influence how they vote, according to a national survey conducted by Yale University, Gallup and the ClearVision Institute.