History On experiments to investigate the tension between quantum mechanics and relativity. http://www.quantumphil.org/history.htm
Extractions: History John Bell During 1988, I came in contact with John Bell in the CERN , the European Laboratory for Particle Physics in Geneva. With his support and collaboration, I launched the activity of the Center for Quantum Philosophy , promoting talks in the CERN and in various European universities. These activities aimed to stimulate the discussion on the philosophical and scientific challenges raised by the quantum theory, and show that this theory is now an integral part of knowledge and culture. In the CERN held talks among others: Herwig Schopper, John Bell, Constantin Piron, Nicolas Gisin, Asher Peres, John Ellis. Particular mention deserves a colloquium in Cologne (Germany) on May 13-14, 1990, organized in collaboration with the Lindenthal-Institute and the Institute for Theoretical Physics of the University of Cologne, at which participated two major exponents of Nonlocality research: John Bell and Anton Zeilinger (see in German).
Hyperspace GR Hypertext A set of hypertext based services for general relativity research provided by the QMW relativity group. http://www.maths.qmw.ac.uk/hyperspace/
Extractions: This service is sponsored by the International Society on General Relativity and Gravitation Welcome to the HyperSpace service at QMUL, a set of hypertext based services for general relativity research provided by the QMUL Relativity group, based on a similar service at the University of British Columbia. Software is by Steve Braham Note from the School of Mathematical Sciences Webmaster : a disk failure in August 2005 means that the search and (some of the ftp) facilities mentioned below are not available at this time. Sorry for the inconvenience. We have the following: Address searches (Unavailable at this time) The number of GR sites on the web is growing rapidly. This is a short list of the most important ones. We have an anonymous FTP archive. On it we have:
Special Theory Of Relativity The Basics of relativity (6 seconds); The relativity Game Challenge what you know! Note For Fermilab s Time Dilation Challenge and The relativity Game, http://www.glenbrook.k12.il.us/gbssci/phys/Class/relativity/reltoc.html
Extractions: Table of Contents 1-D Kinematics Newton's Laws Vectors - Motion and Forces in Two Dimensions Momentum and Its Conservation ... Work, Energy, and Power Circular Motion and Planetary Motion Einstein's Theory of Special Relativity Static Electricity Current Electricity Waves Sound Waves and Music Light Waves and Color Reflection and the Ray Model of Light ... Refraction and the Ray Model of Light Fermilab's Time Dilation Challenge. The Basics of Relativity (6 seconds) The Relativity Game - Challenge what you know! The equation. Where does that come from? I still don't get it! Give me the basketball analogy. So what? There's an equation. How do I use the equation in the game?
Extractions: PYTHAGOREAN PHYSICS A Collection of Writings by Todd Matthews Kelso Introduction Overview Pythagorean Physics postulates the existence of a basic unit of matter, the Pythagorean atom. It deals with discreteness in favor of continuity. It considers both time and space to be absolute. Motion is a function of space and time. Unlike classical mechanics, Pythagorean Physics considers mass to be a variable and has a different concept of what a particle is. Pythagorean Physics employs an axiomatic system that incorporates both philosophy and science in order to achieve meaning. Epistemology Scientists sometimes have a difficult time understanding the limits and validity of what they think they know. Neither the theory of relativity nor quantum mechanics employs an axiomatic system that can guard against such errors. Rather, they both superimpose notions for convenience. Pythagorean Physics follows an axiomatic system that starts with definitions and proceeds step by step from there in a logical fashion that provides meaning in a way that other approaches can not. Integration of Philosophy and Science Specialization has tended to separate concepts that are really interconnected. In order to understand better how the universe works, it is necessary to understand more than just one small portion of it. A comprehensive overview that honors the interconnectedness of all existence is required. Unfortunately, particular aspects of science are becoming more and more esoteric without a broader view. It even becomes necessary at times for a scientist to accept on faith the work developed in a different area of science. This practice can add credence to ideas that should be challenged. Pythagorean Physics challenges multiple ideas from multiple disciplines.
Extractions: Look for changes to these pages soon to reflect the new cooperation between the AEI and LSU numerical relativity groups. We use supercomputers to study black holes, gravitational waves, and other phenomena predicted by Einstein's Theory of General Relativity. Our WWW servers are an integral part of our research efforts. Here you will again be able to find information on group projects, members, publications, collaborations, and much, much more. Enjoy our Server! Keywords for this server : Numerical Relativity, General Relativity, Einstein, Astrophysics, Black Holes, Gravitational Waves, Relativistic Hydrodynamics, Neutron Stars, Hyperbolic and Elliptic PDEs, Parallel Computing, Scientific Visualization. Search Astronomylinks for links: provided by astronomylinks.com more search options... Impressum
Mathematical Physics Mathematical Physics in the Department of Physics and Mathematical Physics. Research areas quantum field theory, string theory, statistical mechanics, theoretical condensed matter. physics, general relativity, quantum gravity and cosmology http://www.physics.adelaide.edu.au/mathphysics/
General Relativity And Gravitation Society The International Society on General relativity and Gravitation was formed in 1971 and is the successor to the International Committee on General relativity http://www.maths.qmw.ac.uk/grgsoc/
Extractions: The International Society on General Relativity and Gravitation was formed in 1971 and is the successor to the International Committee on General Relativity and Gravitation. It is also Affiliated Commission 2 (AC.2) of the International Union of Pure and Applied Physics (IUPAP), and within IUPAP is one of the participants in its Particle and Nuclear Astrophysics and Gravitation International Committee (PANAGIC). We are grateful to the School of Mathematical Sciences Queen Mary, University of London, , Mile End Road, London E1 4NS, UK, for housing this home page. The College is not responsible for its contents, but has general rules on content with which we aim to conform. We have the following: List of officers and committee Information on the Society, for prospective new members (PDF) [also in downloadable form (LaTeX) The Society's constitution [also in downloadable form (LateX) Individual membership form [also in downloadable form(LateX) Corporate membership form [also in downloadable form(LateX) Instructions for payment of dues [also in downloadable form(LateX) The public 'Hyperspace' service , sponsored by the Society General Relativity and Gravitation , the Society's journal, online (current volumes)
Special Relativity Special relativity made Relatively Simple offers information and experiments about special relativity. http://web.wt.net/~cbenton/relativity.htm
Extractions: Hey, boys and girls! Remember when we used to think that Einstein's Theory of Special Relativity was something hard to understand? Well, now that we've looked at it and know just how simple it really is, we're kind of saying to ourselves, "Hey, Albert! What took you so long?" If you, too, would like to see just how simple reality land is, then click on the hypertext links below.
The Sapir-Whorf Hypothesis An assessment of linguistic determinism and linguistic relativity. With reference to the legacies of Wilhelm von Humboldt and Sigmund Freud. http://venus.va.com.au/suggestion/sapir.html
Extractions: Shelley The Sapir-Whorf hypothesis as we know it today can be broken down into two basic principles: linguistic determinism and linguistic relativity Linguistic Determinism refers to the idea that the language we use to some extent determines the way in which we view and think about the world around us. The concept has generally been divided into two separate groups - 'strong' determinism and 'weak' determinism. Strong determinism is the extreme version of the theory, stating that language actually determines thought, that language and thought are identical. Although this version of the theory would attract few followers today - since it has strong evidence against it, including the possibility of translation between languages - we will see that in the past this has not always been the case. Weak determinism, however, holds that thought is merely affected by or influenced by our language, whatever that language may be. This version of determinism is widely accepted today. Wilhelm von Humboldt: The 'Weltanschauung' Hypothesis.
SpringerLink - Publication relativity indexrelativity. Pages. Fundamental postulate Michelson interferometer Time dilation Length contraction The twin paradox Adding velocities http://www.springerlink.com/openurl.asp?genre=journal&issn=0001-7701
Extractions: Last Updated June 28, 2004 Ricci is a Mathematica package for doing symbolic tensor computations that arise in differential geometry. It has the following features and capabilities: Limitations: Ricci currently does not support computation of explicit values for tensor components in coordinates, or derivatives of tensors depending on parameters (as in geometric evolution equations or calculus of variations), although support for these is planned for a future release. Ricci also has no explicit support for general relativity, or for other mathematical physics or engineering applications, and none is planned. If you are interested in such support, I recommend that you consider the commercial package MathTensor, which is far more extensive than Ricci, and provides all these capabilities and more. MathTensor is available from
Einstein's Discovery Of Relativity - John Stachel Dr. John Stachel speculates on how Einstein arrived at SRT. Dr. Stachel is Professor of Physics Emeritus and Director of the Center of Einstein Studies at http://www.aip.org/history/einstein/essay-einstein-relativity.htm
Extractions: Download the free Acrobat PDF reader This reprints an essay written ca. 1983, "'What Song the Syrens Sang': How Did Einstein Discover Special Relativity?" in John Stachel, Einstein from "B" to "Z" I f you have read Edgar Allen Poe's "The Murders in the Rue Morgue," perhaps you remember the epigraph that Poe chose for this pioneer detective story: What song the Syrens sang, or what name Achilles assumed when he hid himself among women, though puzzling questions, are not beyond all conjecture. I believe that the problem of how Einstein discovered the special theory of relativity (SRT) falls into this category of "puzzling questions," that "are not beyond all conjecture."
Extractions: Anthropic-Principle ORG ... not exactly the stairway to heaven Don't Project The Big Bang produced numerous principles and laws that have yet to be broken in spite of a lot of projections and theoretical speculation about the eventual and final fate of the usable energy of our expanding universe. The inevitable heat death of the universe is one of the more obvious projections of an expanding "entropic" universe, but this conclusion doesn't completely justify the fact that the extremely small positive value of the cosmological constant means the big bang actually resulted in a near perfect balance between runaway expansion and gravitational recollapse, which actually puts the universe about as far away from the tendency toward heat death as you can possibly get, and yet still be heading in that direction. The principle of least action says that it is no coincidence that this near-perfectly symmetrical configuration is also the most energy-efficient means for dissipating energy, because this means that tendency toward "heat-death" is most economically restricted to the most-even distribution of energy possible. The universe actually expresses a grand scale natural preference toward the most economical form of energy dissipation, so if the second law of thermodynamics is telling us that the entropy of our expanding universe increases with every action, then the anthropic principle is telling us that this will occur by the most energy efficient means possible, since the flatness of the universe is one of the many coincidentally ecobalanced requirements of the principle.
Extractions: The traditional presentation of Special Relativity can roughly be qualified as a way to let one get used to some formulas that can produce the right results in a computational (but possibly tedious) way, and then wait until one gets really familiar with their properties, to finally grasp the meaning of the theory and go further. Instead, we propose here a way to make the effort necessary to really understand the core of the theory more directly and deeply like theorician physicists do, according to the mathematical terms in which Special Relativity is involved as a base for further developments of mathematical physics.
Journal Of Lie Theory A short history of the life and work of Sophus Lie, whose work, Lie groups, has applications in quantum mechanics in relativity. http://www.emis.de/journals/JLT/vol.9_no.1/1.html
The Sapir-Whorf Hypothesis 1999 overview of the history and development of the theories of linguistic determinism and linguistic relativity. By Rebecca Ash. http://www.angelfire.com/journal/worldtour99/sapirwhorf.html
Extractions: Search: Lycos Angelfire Free Games Share This Page Report Abuse Edit your Site ... Next The Sapir-Whorf Hypothesis From George Orwell's The Sapir-Whorf hypothesis theorizes that thoughts and behavior are determined (or are at least partially influenced) by language. If true in its strongest sense, the sinister possibility of a culture controlled by Newspeak or some other language is not just science fiction. Since its inception in the 1920s and 1930s, the Sapir-Whorf hypothesis has caused controversy and spawned research in a variety of disciplines including linguistics, psychology, philosophy, anthropology, and education. To this day it has not been completely disputed or defended, but has continued to intrigue researchers around the world. Edward Sapir and Benjamin Lee Whorf brought attention to the relationship between language, thought, and culture. Neither of them formally wrote the hypothesis nor supported it with empirical evidence, but through a thorough study of their writings about linguistics, researchers have found two main ideas. First, a theory of linguistic determinism that states that the language you speak determines the way that you will interpret the world around you. Second, a weaker theory of linguistic relativism that states that language merely influences your thoughts about the real world.
General Relativity And Black Holes General relativity and Black Holes. How is the geometry around a Black Hole? A Black Hole is one of the most fascinating objects in the universe, http://www.astro.ku.dk/~cramer/RelViz/text/exhib1/exhib1.html
Extractions: A Black Hole is one of the most fascinating objects in the universe, and it can be understood on basis of Einstein's general theory of relativity. In the following pages, you will get an impression of how the curvature changes near a Black Hole, what happens when the hole rotates, and what special effects the Black Hole has on particles and light moving close to the Black Hole. I will not go in much detail with the formulas, because the aim of this World Wide Web Exhibition is presentation and graphics. You can, if you want, read all the relevant details about metric tensors of Black Holes in this hypertext about "Geometry Around Black Holes". Instead, I will use some of the fundamental results to get a view of the geometry around a Black Hole. I will concentrate on curvature and the trajectories of relativistic particles. In flat (euclidian) space, bodies move in a background of space and time. Newton called it absolute space and absolute time. Einstein changed this view radically in 1915 when he completed his general theory of relativity which resulted in a unified 4-dimensional space-time . All distances along a world line are called separations , and they are measured by the metric: This metric defines flat Minkowski space-time , and is much like Newtons absolute space plus a time dimension (note the sign of the time is negative).
Einstein.anu.edu.au/ SpaceTime Physics Ph 1bcClick for Java TA, Want to really know what makes Special relativity tick? Press the Java TA button to start up the Java teaching assistant. http://einstein.anu.edu.au/