Geometry.Net - Physics: Relativity

Relativity Group
The relativity group is one of the largest research groups in the Department. The group has been in existence for over three decades and is still strongly
http://www.astro.cf.ac.uk/groups/relativity/

Extractions: LAL T he Relativity group is one of the largest research groups in the Department. The group has been in existence for over three decades and is still strongly supported. Our research interests include the origin and nature of both the micro-wave and gravitational wave backgrounds in the early universe and their detection, the formation, evolution and nature of large-scale structure in the Universe, alternative forumlations of general relativity, gravitational wave data analysis, analytical and numerical studies of isolated and binary black holes, gravitational radiation reaction, etc. The group has strong links and collaborative research with other relativity groups world over and a member of many international gravitational wave projects including the British-German GEO600 , the American LIGO science collaboration and the Euro-American laser interferometer space antenna (LISA) project. Black Holes and Gravitational Waves
Cosmic Commode
A proposed resolution of general relativity theory and an alternative to the Big Bang theory of cosmological creation.
http://www.thecosmiccommode.com/

Extractions: Cosmic Commode cosmology views gravity as it is defined by Machian-Einsteinian relativity: a ubiquitous curvature of space-time in the presence of matter and/or energy. Gravity itself is not a force.... It is geometry.... and the universe ain t expanding, it s just curved a funny way. THE COSMIC COMMODE A PROPOSED RESOLUTION OF GENERAL RELATIVITY THEORY and AN ALTERNATIVE TO THE BIG BANG MODEL OF COSMOLOGICAL CREATION
Welcome!
This is an alternate cosmology not based on General relativity.
http://spacetimerelativity.com/

Extractions: Cosmology - The science or theory of the universe as an ordered whole, and of the general laws which govern it. Also, a particular account or system of the universe and its laws. - Oxford English Dictionary This site was developed to share a different cosmology with people who are interested. We are in a golden age of astronomy and cosmology. New observations and data about the universe are coming in at a fast rate. This is an exciting time for Astronomical science. Recently cosmologists have given us a new force in nature that acts like anti-gravity of which Einstein felt that this line of reasoning was the biggest blunder of his life. The underlying cause for this new updated cosmological constant is dark energy. Dark energy seems to act on the universe differently in different cosmic eras. To me the idea of dark energy indicates a weakness in big bang cosmology. It would be more desirable to have a simpler cosmology where the fundamental interactions do not vary as our universe evolves. The premise of this new cosmology is based on the idea that space itself is not the cause of our expanding universe, it is the expansion of time itself that is the cause. While on the surface this distinction might seem nonsensical or trivial to some readers, but I believe it can be tested through experiments* mentioned in the STR link above.
Lecture Notes On General Relativity
Download lecture notes on special relativity, general relativity, differential geometry, and spherically symmetric spacetimes in postscript format.
http://sunkl.asu.cas.cz/~had/gr.html

Extractions: This homepage contains lecture notes on the course of general relativity FX2/H97 read in the fall semester 1997 at the Physics Institute of NTNU, Trondheim. Some parts were added later. It is still under construction (see the dates of last revision of each chapter). Some viewers do not allow to see the PS-files on the screen. However, you can download it (using the 'save'-command) and print it on a PostScript printer.
[gr-qc/9512024] Introduction To The Effective Field Theory Description Of Gravit
This is a pedagogical introduction to the treatment of general relativity as a quantum effective field theory.
http://arxiv.org/abs/gr-qc/9512024
Gravity Probe B
Gravity Probe B is the relativity gyroscope experiment being developed by NASA and Stanford University to test two extraordinary, unverified predictions of
http://einstein.stanford.edu/
General Relativity And Quantum Cosmology
General relativity and Quantum Cosmology (since 7/92). index to grqc titles/authors; get gr-qc/abstract; help. e-Prints are available for the following
http://arxiv.org/archive/gr-qc
Avshalom C. Elitzur Àáùìåí Àìéöåø
Senior Lecturer, BarIlan University. Includes an autobiography, a curriculum vitae, and a list of publications in quantum mechanics, relativity, thermodynamics, evolutionary theory, philosophy of mind and psychoanalysis.
http://faculty.biu.ac.il/~elitzua/
Numerical Relativity
Fortran 77 and 90 codes by Joan Masso.
http://jean-luc.aei-potsdam.mpg.de/Codes/Examples/
UT Austin, Center For Relativity Home Page
The Center for relativity. Dept. of Physics, The University of Texas at Austin, Austin TX, 787121081 (512) 471-1103 (Main Office) (512) 471-0890 (FAX)
http://wwwrel.ph.utexas.edu/
Welcome To Prof. Dr. Rati Ram Sharma's Web Site
Site rectifies errors of relativity,Quantum theory,Uncertainty Principle,theories of Quarks,Expanding Universe,Darwin theory.Opposes existence of Higgs Boson,weak charge.Gives scientific bases of Homeopathy,spirituality.
http://www.geocities.com/drratiram_sharma/index.html
Australasian Society For General Relativity And Gravitation
Includes a newsletter, information on events, and links to related research groups.
http://www.physics.adelaide.edu.au/ASGRG/

Extractions: Contents Membership information Newsletters Job vacancies Committee / contact information ... Other links worldwide The Australasian Society for General Relativity and Gravitation (ASGRG) was formed at a meeting of mathematicians and physicists in Canberra in September 1994. The Society aims to bring together researchers who work in a wide range of areas within mathematical, theoretical and experimental gravitation: exact solutions of general relativity, mathematical relativity, numerical relativity, quantum gravity, cosmology, estimation of the gravitational wave signals produced by astronomical sources, and development of techniques and technology for detecting these signals with earth- and satellite-based antennae. It was decided to form the society to facilitate discussion of mutual problems of interest and to provide greater cooperation to solve the outstanding problems in the various fields. We see our role as providing a regional forum in Australia and New Zealand similar to the recently formed Topical Interest Group in Gravitation of the American Physical Society, and the international GRG society. The official name and constitution of the Society were adopted at the first General Meeting, which was held during the
CONFERENCE On NONCOMPACT VARIATIONAL P
Rutgers University, NJ, USA; 1418 October 2001.
http://www.math.rutgers.edu/events/bbconf.html
To Understand Relativity
The (special) theory of relativity is a mathematical model which takes According to the laws of relativity, Paul s time slows down during his journey.
http://membres.lycos.fr/bvr/relativ.html

Extractions: You find the following solution: before sending the projectile, you send a mirror (M) provided with a small motor before the rocket. You follow the progression of the mirror with the help of a light signal. When the signal will take 1/3 second to go to the mirror and come back, you will know that the mirror will be at 50,000 km. 1/6 of second before this moment, you send a signal starting the motor of the mirror in order to stop it (we suppose the motor reacts instantaneously).
Particles, Special Relativity And Quantum Mechanics
Explains some of the more interesting results and predictions of modern physics.
http://atschool.eduweb.co.uk/rmext04/92andwed/pf_quant.html

Extractions: Paradoxes Contents These are the props. You own a barn, 40m long, with automatic doors at either end, that can be opened and closed simultaneously by a switch. You also have a pole, 80m long, which of course won't fit in the barn. Now someone takes the pole and tries to run (at nearly the speed of light) through the barn with the pole horizontal. Special Relativity (SR) says that a moving object is contracted in the direction of motion: this is called the Lorentz Contraction. So, if the pole is set in motion lengthwise, then it will contract in the reference frame of a stationary observer. You are that observer, sitting on the barn roof. You see the pole coming towards you, and it has contracted to a bit less than 40m. So, as the pole passes through the barn, there is an instant when it is completely within the barn. At that instant, you close both doors. Of course, you open them again pretty quickly, but at least momentarily you had the contracted pole shut up in your barn. The runner emerges from the far door unscathed. But consider the problem from the point of view of the runner. She will regard the pole as stationary, and the barn as approaching at high speed. In this reference frame, the pole is still 80m long, and the barn is less than 20 meters long. Surely the runner is in trouble if the doors close while she is inside. The pole is sure to get caught.
Albert Einstein And The Theory Of Relativity
We shall consider relativity in more detail later. The General Theory of relativity predicts that light coming from a strong gravitational field should
http://csep10.phys.utk.edu/astr161/lect/history/einstein.html

Extractions: Newton's theory of gravitation was soon accepted without question, and it remained unquestioned until the beginning of this century. Then Albert Einstein shook the foundations of physics with the introduction of his Special Theory of Relativity in 1905, and his General Theory of Relativity in 1915 (Here is an example of a thought experiment in special relativity ). The first showed that Newton's Three Laws of Motion were only approximately correct, breaking down when velocities approached that of light. The second showed that Newton's Law of Gravitation was also only approximately correct, breaking down in the presence of very strong gravitational fields. We shall consider Relativity in more detail later . Here, we only summarize the differences between Newton's theory of gravitation and the theory of gravitation implied by the General Theory of Relativity. They make essentially identical predictions as long as the strength of the gravitational field is weak, which is our usual experience. However, there are three crucial predictions where the two theories diverge, and thus can be tested with careful experiments. The orientation of Mercury's orbit is found to precess in space over time, as indicated in the adjacent figure (the magnitude of the effect is greatly exaggerated in this figure). This is commonly called the "precession of the perihelion", because it causes the position of the perihelion to move. Only part of this can be accounted for by perturbations in Newton's theory. There is an extra 43 seconds of arc per century in this precession that is predicted by the Theory of General Relativity and observed to occur (a second of arc is 1/3600 of an angular degree). This effect is extremely small, but the measurements are very precise and can detect such small effects very well.
Einstein's Theory Of Relativity
Learn about the origins of the universe and its fate. Einstein's Theory of relativity is both interesting and comprehensible.
http://www.drphysics.com/relativity.html

Extractions: Theory of Relativity What are black holes? What does E=mc mean? How did the Universe begin? How will it end? How is the twin paradox resolved? Learn about Einstein's Theory of Relativity online and find the answers to these questions about the fundamental nature of matter and energy in the Universe. To find out more about the class, go to the Syllabus
Usenet Relativity FAQ
This is the web version of the Usenet relativity FAQ (Frequently Asked The full Physics and relativity FAQ in HTML form can be downloaded as a single
http://www2.corepower.com:8080/~relfaq/relativity.html

Extractions: Version Date: 1 Dec 1998 Usenet Relativity FAQ This is the web version of the Usenet Relativity FAQ (Frequently Asked Questions). Its purpose is to provide good answers to questions which have been discussed often in sci.physics.relativity and related Usenet newsgroups. The articles in this FAQ are based on those discussions and on information from good reference sources. That does not mean that they are always perfect and complete. If you have corrections, updates or additional points to make please send E-mail to the editors at relfaq@corepower.com . You can also raise the subject in the newsgroups if you really think you have something new to say. If you want to write up an article following a discussion about a subject not yet covered here then feel free to send it to us, but please do not use this address to ask new questions. Ask them in the appropriate newsgroup instead. If you are new to this newsgroup, please read "Welcome! to sci.physics.relativity" "An Introduction to the Physics Newsgroups" , and "Possible Topics for Discussion on sci.physics.relativity"
NOVA | Einstein's Big Idea | PBS
NOVA presents a profile of Albert Einstein, with additional teaching resources, Shockwave demonstrations, and animations of relativity concepts.
http://www.pbs.org/wgbh/nova/einstein/
NTNU JAVA :: View Topic - Space And Time In Special Relativity
Special relativity java applet Space and time. The special theory of relativity is the result of two postulates. 1. The laws of physics are the same
http://www.phy.ntnu.edu.tw/~hwang/relativity/relativity.html

Extractions: NTNU JAVA Physics simulations Misc Registered user will be able to get files related to java applets for offline use View previous topic View next topic hwang Site Admin Joined: 28 Jan 2004 Posts: 257 Posted: Thu Jan 29, 2004 4:26 pm Post subject: Space and Time in Special Relativity The special theory of relativity is the result of two postulates:

101-120 of 176 Back | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | Next 20