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Latest Physical quantities Stories

2010-11-15 08:00:00

CLEVELAND, Nov. 15, 2010 /PRNewswire/ -- Keithley Instruments, Inc. (NYSE: KEI), a world leader in advanced electrical test instruments and systems, will broadcast a free, web-based seminar titled "How to Make Electrical Resistivity Measurements of Bulk Materials: Conductors, Insulators, and Semiconductors" on Thursday, November 18, 2010. During this one-hour presentation, participants will learn the fundamentals of making resistivity measurements on bulk materials, as well as the various...

2010-10-26 02:42:51

Storing thermal energy in chemical could lead to advances in storage and portability Researchers at MIT have revealed exactly how a molecule called fulvalene diruthenium, which was discovered in 1996, works to store and release heat on demand. This understanding, reported in a paper published on Oct. 20 in the journal Angewandte Chemie, should make it possible to find similar chemicals based on more abundant, less expensive materials than ruthenium, and this could form the basis of a...

2010-09-28 20:41:26

The second law of thermodynamics is a big hit with the beret-wearing college crowd because of its implicit existential crunch. The tendency of a closed systems to become increasingly disordered if no energy is added or removed is a popular, if not depressing, "things fall apart" sort-of-law that would seem to confirm the adolescent experience. Now a joint team of Ukrainian and American scientists has demanded more work and less poetry from the second law of thermodynamics, proposing a novel...

2010-09-21 20:33:46

Research is closing in on the next-generation of ultra-high-density magneto-optical storage devices that could store more than 6,000 Terabits (6 petabits) of data, more than 70 times the contents of the entire U.S. Library of Congress, on a single 5-inch disc. Yet the vast storage amount is limited by the ability to write data quickly enough to the device. In the Journal of Applied Physics, researchers at Sun Yat-Sen University in China have demonstrated a way to record on ferromagnetic films...

2010-09-16 11:00:00

WASHINGTON, Sept. 16 /PRNewswire/ -- The X PRIZE Foundation, an educational nonprofit prize organization, and Progressive Insurance, the country's fourth largest auto insurance group, today, at the Historical Society of Washington, D.C., awarded $10 million to three teams who successfully completed the rigorous Progressive Insurance Automotive X PRIZE. The winning teams -- Edison2 of Lynchburg, Virginia; X-Tracer of Winterthur, Switzerland; and Li-ion Motors Corp. of Mooresville, North...

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2010-09-08 08:20:00

Seven years ago Northwestern University physicist Adilson E. Motter conjectured that the expansion of the universe at the time of the big bang was highly chaotic. Now he and a colleague have proven it using rigorous mathematical arguments. The study, published by the journal Communications in Mathematical Physics, reports not only that chaos is absolute but also the mathematical tools that can be used to detect it. When applied to the most accepted model for the evolution of the universe,...

2010-08-09 14:31:46

PTB physicists want to improve tumour therapy by heat treatment in cooperation with biomedical physicians from Jena Those who have to fight a powerful enemy must look for allies. This is why physicists from different scientific fields have decided to cooperate with biomedical physicians in order to place the fight against cancer through heat treatment by means of magnetic nanoparticles on a solid, scientific basis. It is the objective of the cooperation to improve the success of the therapy....

2010-07-14 14:15:31

Oil and natural gas companies rely upon geological core analyses to help them understand and evaluate oil and gas reserves. A rock sample can reveal myriad details about a geological structure's formation, content, and history. Conductivity, a material's ability to carry an electrical current, is one of the most useful measurements of core samples. The conductivity of a geological formation depends on the direction of measurement, so it's considered "anisotropic." "Anisotropy is usually the...

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2010-07-06 14:05:00

While those wonderful light sabers in the Star Wars films remain the figment of George Lucas' fertile imagination, light mills "“ rotary motors driven by light "“ that can power objects thousands of times greater in size are now fact. Researchers with the U.S. Department of Energy (DOE)'s Lawrence Berkeley National Laboratory and the University of California (UC) Berkeley have created the first nano-sized light mill motor whose rotational speed and direction can be controlled by...

2010-07-06 11:56:15

'Most condensed form of energy storage outside of nuclear energy' The world's biggest Roman candle has got nothing on this. Using super-high pressures similar to those found deep in the Earth or on a giant planet, Washington State University researchers have created a compact, never-before-seen material capable of storing vast amounts of energy. "If you think about it, it is the most condensed form of energy storage outside of nuclear energy," says Choong-Shik Yoo, a WSU chemistry professor...


Word of the Day
snash
  • To talk saucily.
  • Insolent, opprobrious language; impertinent abuse.
This word is Scots in origin and probably imitative.