After making the country’s first spacewalk, three Chinese astronauts returned safely to Earth on Sunday. They landed in northern China’s Inner Mongolia region. Mission commander Zhai Zhigang, 41, was watched on television by countless millions around the globe as his 15-minute spacewalk vaulted China into ranks of the United States and the former Soviet Union as [...]
Archive for the ‘Physics’ Category
China astronauts return as heroes
Posted in News, tagged space on September 29, 2008 | Leave a Comment »
Gravitational fields as generalized string models
Posted in Astronomy & Cosmology, Physics, String theory, tagged Gravity, strings on September 29, 2008 | Leave a Comment »
This week a paper puplished arxiv titled :Gravitational fields as generalized string models We show that Einstein’s main equations for stationary axisymmetric fields in vacuum are equivalent to the motion equations for bosonic strings moving on a special nonflat background. This new representation is based on the analysis of generalized harmonic maps in which the [...]
LHC re-start scheduled for 2009
Posted in High Energy Physics, News, tagged LHC on September 23, 2008 | Leave a Comment »
I have just gone through the press release from CERN. They said that investigations at CERN following a large helium leak into sector 3-4 of the Large Hadron Collider (LHC) tunnel have indicated that the most likely cause of the incident was a faulty electrical connection between two of the accelerator’s magnets. Before a full [...]
First beam in Large Hadron Collider
Posted in High Energy Physics, News, Physics, tagged LHC on September 10, 2008 | Leave a Comment »
Today is 10th september,2008 and LHC has started up. Beam is in the LHC now. So CERN is really hot. Two blogs have started live bloging to keep us updated - Cosmic Variance and symmetry breaking . You can also get updates in the blog of Tommaso Dorigo. Here is the plan for tomorrow . Best of luck for LHC.
Spin Network: What is it?
Posted in Physics, Quantum Gravity, tagged Loop Quantum Gravity, Spin Network on August 21, 2008 | Leave a Comment »
According to Loop quantum gravity (LQG), loops are the quantum excitations of the gravitational field and they are space. Because there is no background space. Only loops over loops and these loops intersect each other just like a net. Interesting fact is that, the points at which loops intersect, i mean at the nodes “quanta [...]
String 2008 starts today
Posted in News, tagged strings on August 18, 2008 | Leave a Comment »
Today String 2008 is going to start at CERN. This conferense will end on 23rd of this month. Last year it was held in Madrid, Spain. This conference is the largest and most important one on String Theory. Almost 400 physicists are participating. Here is the scheduale. CERN will provide live webcast . Lubos Motl [...]
Gravitational Wave : What is It ?
Posted in Astronomy & Cosmology, Physics, tagged Astronomy, Gravitational waves, Video on August 5, 2008 | 1 Comment »
Gravitational wave is a prediction of Einstein’s General Relativity . Gravitational waves are disturbance in curvature of space-time caused by the motions of matter and they propagate as a wave, traveling outward from a moving object or system of objects. Important examples of systems which emit gravitational waves are binary star systems, where the two [...]
Hawking May Shift to Perimeter ?
Posted in News, Physics, tagged Hawking, News, Perimeter Institute on July 20, 2008 | Leave a Comment »
Its a hot news now that famous theoretical physicist and the writer of award winning book ” Brief History of Time” Stephen Hawking may leave Cambridge. He has received an offer from Canadian research institute ” Perimeter Institute of Theoretical Physics” where he would join recently appointed director Neil Turok. Hawking may visit perimeter next [...]
