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physic world - NASA's Kepler Confirms Its First Planet in Habitable Zone of Sun-like Star

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NASA's Kepler Confirms Its First Planet in Habitable Zone of Sun-like Star. The newly confirmed planet, Kepler-22b, is the smallest yet found to orbit in the middle of the habitable zone of a star similar to our sun. The planet is about 2.4 times the radius of Earth. Scientists don't yet know if Kepler-22b has a predominantly rocky, gaseous or liquid composition, but its discovery is a step closer to finding Earth-like planets. Kepler discovers planets and planet candidates by measuring dips in the brigh...

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physic world - Nuclear Clock Accurate Over Billions of Years

http://physics-razi.blogfa.com/post-25.aspx

Nuclear Clock Accurate Over Billions of Years. A clock accurate to within a tenth of a second over 14 billion years the age of the universe is the goal of research being reported this week by scientists from three different institutions. To be published in the journal Physical Review Letters, the research provides the blueprint for a nuclear clock that would get its extreme accuracy from the nucleus of a single thorium ion. If you give people a better clock, they will use it, said Alex Kuzmich, a profess...

physics-razi.blogfa.com

physic world - Black Holes Turn up the Heat

http://physics-razi.blogfa.com/post-28.aspx

Black Holes Turn up the Heat. A Journey into the Cosmic Youth. Blazars rewrite the thermal history of the universe', emphasizes Dr. Christoph Pfrommer (HITS), one of the authors. But how can this idea be tested? How Black Holes Influence the Formation of Galaxies. What are the further consequences of this new heating process? The forest of lines in the quasar spectra originates from density fluctuations in the Universe. In the course of cosmic evolution, the densest fluctuations collapse to form gala...

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physic world

http://physics-razi.blogfa.com/9012.aspx

Partment of Energy boost for small nuclear reactors. The US Department of Energy (DOE) will support the construction of three small nuclear reactors at its Savannah River Site in South Carolina. The reactors are designed to generate heat and electricity for use at remote facilities such as mines, oil fields or isolated communities. The three companies involved are Gen4 Energy (formerly Hyperion), Holtec International and NuScale Power. نوشته شده در Sat 17 Mar 2012. ScienceDaily (Jan. 31, 2011).

physics-razi.blogfa.com

physic world

http://physics-razi.blogfa.com/9010.aspx

Quantum physics to encrypt clouds of the future - boffins. Boffins looking for the perfect alliance between science and technology have married quantum computing to the future of IT - the cloud. The researchers have used quantum mechanics to encrypt heavy-duty number-crunching computing, thereby removing a major obstacle in the adoption of the cloud for many enterprises؟ How safe is my data when it's hosted on someone else's computers. نوشته شده در Fri 20 Jan 2012. First Habitable planet Discovered.

physics-razi.blogfa.com

physic world

http://physics-razi.blogfa.com/9101.aspx

Detection of a cosmic effect. The first observation of a cosmic effect theorized 40 years ago could provide astronomers with a more precise tool for understanding the forces behind the universe's formation and growth, including the enigmatic phenomena of dark energy and dark matter. نوشته شده در Sat 14 Apr 2012. Nuclear Clock Accurate Over Billions of Years. This RF ion trap holds individual thorium atoms while they are laser-cooled to near absolute zero temperature. (Click image for high-resolution ...

physics-razi.blogfa.com

physic world - Geophysics yesterday and today

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Geophysics yesterday and today. That honor belongs to Arthur Schuster of Owens College, a forebear of the University of Manchester in the UK. His was the first paper in the first issue of the first volume of JGR. Then called Terrestrial Magnetism. The year was 1896. It makes one wonder what subjects that are new today will be taken for granted at an AGU meeting 115 years in the future. But Earth is not a magnet. Rather, convection in a [rotating] iron core is responsible for the magnetism that we see...

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physic world - What's Baking on Titan?

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What's Baking on Titan? Another group of Cassini scientists, led by Ellen Stofan, who is based at Proxemy Research, Rectortown, Va., has been scrutinizing radar images of Titan's southern hemisphere. Titan is the only place other than Earth that has stable liquid on its surface, though the liquids on Titan are hydrocarbon rather than water. So far, vast seas have only been seen in Titan's northern hemisphere. نوشته شده در Mon 29 Oct 2012. Fizik mohandesi90.uni kashan. Anjoman elmi fizik. uni mashhad.

physics-razi.blogfa.com

physic world - MIT-developed ‘microthrusters’ could propel small satellites

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MIT-developed ‘microthrusters’ could propel small satellites. Penny-sized rocket thruster may soon power the smallest satellites in space. They’re so small that you can put several [thrusters] on a vehicle, Lozano says. He adds that a small satellite outfitted with several microthrusters could not only move to change its orbit, but do other interesting things like turn and roll. Cleaning up CubeSat clutter. Engineering propulsion systems for small satellites could solve the problem of space junk: CubeSat...