Wednesday, September 8, 2010
Tuesday, September 7, 2010
Tuesday, August 31, 2010
Saturday, August 28, 2010
Friday, August 27, 2010
Monday, August 16, 2010
TVS Gold Bharat keyboard with Rupee symbol key
TVS Gold Bharat keyboard with Rupee symbol key: "TVS Gold Bharat keyboard will have this rupee symbol font exactly on the ‘tilde ~’ key, so it makes easy for us to type this rupee font easily.
TVS Gold Bharat keyboard have few other latest features that makes it a best buy. It’s a mechanical keyboard with USB & PS/2 compatible and wear resistant.
TVS has launched this keyboard with a brand name of Gold Bharat, and exactly on the country’s Independence Day!"
TVS Gold Bharat keyboard have few other latest features that makes it a best buy. It’s a mechanical keyboard with USB & PS/2 compatible and wear resistant.
TVS has launched this keyboard with a brand name of Gold Bharat, and exactly on the country’s Independence Day!"
Wednesday, July 14, 2010
Monday, July 12, 2010
Tuesday, June 29, 2010
Sunday, June 27, 2010
Brownian motion of particles
Science/AAAS | This Week in Science: 25 June 2010; 328 (5986): "Nearly 200 years ago, the botanist Robert Brown noted that pollen particles floating on a liquid displayed a random motion, jittering under the microscope as if the particles were alive. In 1905, Albert Einstein described this Brownian motion in terms of statistical thermodynamics. Now, Li et al. (p. 1673, published online 20 May) use a single, optically trapped silica bead to probe the dynamics of Brownian motion, measuring the predicted instantaneous velocity of the particle and verifying the short-time-scale behavior predicted a century ago. As well as testing fundamental principles of physics, the technique also has practical implications for cooling particles to ultralow temperatures."
Earth's 100,000 years cycle of glaciation and deglaciation
Science/AAAS | This Week in Science: 25 June 2010; 328 (5986)
For the past half-million years, our planet has passed through a cycle of glaciation and deglaciation every 100,000 years or so. Each of these cycles consists of a long and irregular period of cooling and ice sheet growth, followed by a termination—a period of rapid warming and ice sheet decay—that precedes a relatively short warm interval. But what causes glacial terminations? Denton et al. (p. 1652) review the field and propose a chain of events that may explain the hows and whys of Earth's emergence from the last glacial period. Pulling together many threads from both hemispheres suggests a unified causal chain involving ice sheet volume, solar radiation energy, atmospheric carbon dioxide concentrations, sea ice, and prevailing wind patterns.
For the past half-million years, our planet has passed through a cycle of glaciation and deglaciation every 100,000 years or so. Each of these cycles consists of a long and irregular period of cooling and ice sheet growth, followed by a termination—a period of rapid warming and ice sheet decay—that precedes a relatively short warm interval. But what causes glacial terminations? Denton et al. (p. 1652) review the field and propose a chain of events that may explain the hows and whys of Earth's emergence from the last glacial period. Pulling together many threads from both hemispheres suggests a unified causal chain involving ice sheet volume, solar radiation energy, atmospheric carbon dioxide concentrations, sea ice, and prevailing wind patterns.
Thursday, June 24, 2010
Neutrino search
A hard-to-observe fundamental particle that travels alone, the neutrino has little or no mass, so rarely interacts with other particles.
Neutrinos are ubiquitous throughout our universe. They were produced during the Big Bang, and many of those are still around. New ones are constantly being created too, through natural occurrences like solar fusion in the sun's core, or radioactive elements decaying in the Earth's mantle, as well as when the particle accelerator at Fermilab purposely smashes protons into carbon foils.
Our sun produces so many that hundreds of billions are zinging through our bodies every second, Coan said. It's hoped the new detector can resolve questions surrounding three different kinds of neutrinos — electron, tau and muon — and their "oscillation" from one type to another as they travel, he said.
Scientists at the new detectors will analyze data from Fermilab's neutrino beam to observe evidence of neutrinos when the speedy, lightweight particles occasionally smash into the carbon nuclei in the scintillating oil of the detector, causing a burst of light flashes, Coan said.
NOvA is looking for the most elusive oscillation of the muon type of neutrino to the electron type, Cooper said.
More information: http://www-nova.fnal.gov/
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