Latest General relativity Stories
"˜David and Goliath' scenario explores extreme mass ratios (Goliath wins)Scientists have simulated, for the first time, the merger of two black holes of vastly different sizes, with one mass 100 times larger than the other. This extreme mass ratio of 100:1 breaks a barrier in the fields of numerical relativity and gravitational wave astronomy.Until now, the problem of simulating the merger of binary black holes with extreme size differences had remained an unexplored region of black-hole...
A Princeton scientist with an interdisciplinary bent has taken two well-known problems in mathematics and reformulated them as a physics question, offering new tools to solve challenges relevant to a host of subjects ranging from improving data compression to detecting gravitational waves.Salvatore Torquato, a professor of chemistry, has shown that two abstract puzzles in geometry -- known as the "covering" and "quantizer" problems -- can be recast as "ground...
SHANGHAI, Nov. 15, 2010 /PRNewswire/ -- Horizon Lines, Inc. (NYSE: HRZ), the leading U.S. domestic ocean shipping and integrated logistics company, announced it will launch express intermodal container service to key inland U.S. cities when it begins the new Five Star Express (FSX) trans-Pacific liner service in December. The announcement was made today during a press conference here for China news media. The maiden FSX voyage is scheduled to depart Ningbo, China, on December 14, 2010,...
CHARLOTTE, N.C., Oct. 25 /PRNewswire/ -- Horizon Lines, Inc. (NYSE: HRZ), the nation's leading domestic ocean shipping and integrated logistics company, announced it will add approximately 12,500 new containers to its international and domestic shipping network to support existing customers and the carrier's new Asia liner service launching in December. "We continue to make great progress with our new China service," said Brian Taylor, Senior Vice President of International Services at...
A European team working on the LISA Pathfinder mission has completed an extensive series of ground tests on the spacecraft's optical payload. The tests successfully achieved - for the first time on a spacecraft instrument - the incredible precision that will be required to confirm the existence of gravitational waves. The extremely precise measurements are realized by a laser interferometer that measures the distance between two free-floating heavy masses with reflective surfaces. In the case...
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,...
The National Research Council (NRC) has strongly recommended the Laser Interferometer Space Antenna (LISA) as one of NASA's next two major space missions, to start in 2016 in collaboration with the European Space Agency (ESA). LISA will study the universe in a manner different from any other space observatory, by observing gravitational waves. The recommendation was announced August 13 in a press conference at the Keck Center of the National Academies in Washington, D.C.In the just-concluded...
(PRZCF.OTCBB) (PH0.FRANKFURT) (TSXV.PHE) VANCOUVER, Aug. 10 /PRNewswire-FirstCall/ - PETRO HORIZON ENERGY CORP. (TSXV.PHE), announces that the TSX Venture Exchange has accepted for filing, documentation with respect to a non-brokered private placement consisting of 1,750,000 flow-through units at a price of $0.20 per unit for gross proceeds of $350,000. $300,000 of this financing was placed with the MineralFields Group. Each unit consists of one common flow-through share and one 1/2 share...
CHARLOTTE, N.C., Aug. 5 /PRNewswire-FirstCall/ -- Horizon Lines, Inc. (NYSE: HRZ), the nation's leading domestic ocean shipping and integrated logistics company, today announced it has secured two important agreements in the ongoing development of its new Asia liner service. Horizon Lines has appointed Mr. Hon Wing Lam as its Owner's Representative and Ben Line Agencies as its General Agent to support the company's ongoing sales and operations in Shanghai and Ningbo. As Horizon Lines...
(PRZCF.OTCBB) (PH0.FRANKFURT) (TSXV.PHE) VANCOUVER, July 21 /PRNewswire-FirstCall/ - PETRO HORIZON ENERGY CORP. (TSXV.PHE), is pleased to announce that the joint management committee with the operator Champlain Mineral Ventures Ltd, has now authorized the mobilization of the field crews, to begin conducting the 2010 work program. Before drilling begins, a detailed prospecting and mapping grid over 3,160 acres at Brazil Lake will be conducted. This will cover the entirety of the original...
Latest General relativity Reference Libraries
Nature Physics is a peer-reviewed scientific journal established in 2005 and published monthly by the Nature Publishing Group. The editor-in-chief is Alison Wright, who is a full-time professional editor employed by the journal. The journal publishes original research, letters, full-length articles, review articles, news, views, physics research highlights, commentaries, book reviews, and correspondence. The main focus is pure and applied physics research, encompassing core physics...
General Relativity and Gravitation is a peer-reviewed scientific journal published monthly since its establishment in 1970. It is published by Springer on behalf of the International Society on General Relativity and Gravitation. G.F.R. Ellis and H. Nicolai are the editors-in-chief. The journal covers modern gravitational physics, encompassing all theoretical and experimental aspects of general relativity and gravitation. The journal’s main goals include public outreach through teaching...
Foundations of Physics is a monthly-published journal devoted to the conceptual bases and fundamental theories of modern physics and cosmology, emphasizing the logical, methodological, and philosophical premises of modern physical theories and procedures. The journal publishes results and observations based on fundamental questions from all major fields of physics: quantum mechanics, quantum field theory, special relativity, general relativity, string theory, M-theory, cosmology,...
String Theory -- A string theory is a physical model whose fundamental building blocks are extended objects (strings, membranes and higher-dimensional objects) rather than points. String theories are able to avoid problems, such as infinite energy density, associated with the presence of mathematical points in a physical theory. The term 'string theory' properly refers to both the 26 dimensional bosonic string theories and to the 10 dimensional superstring theories discovered by...
Spacetime -- In special relativity and general relativity, time and three-dimensional space are treated together as a single four-dimensional manifold called spacetime (alternatively, space-time; see below). A point in spacetime may be referred to as an event. Each event has four coordinates (t, x, y, z). Just as the x, y, z coordinates of a point depend on the axes one is using, so distances and time intervals, invariant in Newtonian physics, may depend on the reference frame of an...
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