Geometry.Net - Physics: Relativity

Basic Topics
relativity and Spacetime. Gravitational waves are emitted by accelerating masses. Electromagnetic waves are produced when charges are accelerated by
http://astrosun.tn.cornell.edu/courses/astro201/top_relativity.htm

Extractions: Gravitational waves are emitted by accelerating masses. Electromagnetic waves are produced when charges are accelerated by electric or magnetic fields. Gravitational waves are produced when masses are accelerated by gravitational fields. In 1919, Sir Arthur Eddington observed the gravitational bending of starlight during a solar eclipse The advance of the perihelion of Mercury. Spacetime is warped around the Sun equivalence principle Quasars can be gravitationally lensed by foreground galaxies to produce multiple images. A day-in-your-life space-time diagram Time dilation Light cone
General Relativity And Quantum Cosmology
Notes on Special relativitylecture notes on special relativity. Special relativity Lecture Notes. Table of Contents. Frames of Reference Inertial Frames Laws of Physics in
http://xxx.lanl.gov/archive/gr-qc
A Unified Field Theory
A mathematical description of nature based on the geometry of SpaceTime. General relativity,Energy-Stress tensor, a set of current densities and Quantum mechanics for Spin 1 Bosons. Space-Time dimensions calculated and not put in by hand.
http://homepage.ntlworld.com/peter.hickman1/
Problems With Relativity
Once being an avid believer of GRT and SRT, now I see there are too many unanswered questions. Can you answer the questions posed here?
http://members.aol.com/carmam1534/Hollings.html

Extractions: "Bodies which are moving under the sole influence of a gravitational field receive an acceleration, which does not in the least depend on the material or the physical state of the body. For instance, a piece of lead and a piece of wood fall in exactly the same manner in a gravitational field (in vacuo) when they start off from rest or with the same initial velocity." Appearances can be deceptive. If you picture a mass the equivalent of the Earth, but compressed to a size similar to that of the wood or lead under discussion (it is immaterial what this mass is, but it might be convenient to picture a miniature black hole), and hold it suspended by some means, when that mass is dropped, the observed acceleration will not be 9.8 meters per second squared (m/s
Cargèse Summer School
Summer School on mathematical general relativity and global properties of solutions of Einstein's equations. CargÃ¨se, Corsica, France; 29 July 10 August 2002.
http://fanfreluche.math.univ-tours.fr/
RELATIVITY AND WAVES
relativity explained by waves. A well animated program on waves will show you the laws of relativity. Original exercices are proposed.
http://members.aol.com/sergecabala/

Extractions: Cliquer ici pour la version francaise relaukzip.exe (less than 400 k, downloaded in less than 3 minutes) and containing: relauk.exe Program very well animated (running under windows 95 or 98). You will can even draw your own waves with the mouse. readme.htm Preliminary explanation, readable with any internet navigator. relasuk.htm Elementary Study of Lorentz' formulae (original study ). TimeZones.htm Original course about measurments relative to a referential, with exercices. ExeLorentz.htm Original exercices about Lorentz' transformations. keys.htm Mouse and keys actions used in relauk.exe . hello.htm This page with some changes (files are readable,from here). rela.bas email: scabala25@aol.com Click below to read : Click here to download relaukzip.exe
Physics 232 Lecture Notes
A set of online course notes for introductory physics. Includes electromagnetic fields, relativity, and quantum mechanics.
http://www.pa.msu.edu/courses/1997spring/PHY232/lectures/

Extractions: Lecture Notes by Topic Course information Coulomb's law Electric fields and electric potentials Gauss' law and conductors ... Cosmology and astrophysics These files are prepared not as a substitute for the text book, but instead as a substitute for lecture notes. Hopefully, one can then attend lecture and concentrate on the material rather than writing notes.
SFB 382 D4 - Virtual Relativity
Virtual Reality of Daniel Weiskopf s project page (SFB 382, project D4). This project deals with the visualization of special and general relativity.
http://www.tat.physik.uni-tuebingen.de/~weiskopf/vr/

Extractions: welcome to virtual relativity "Virtual Relativity" has been developed by Daniel Weiskopf . It is part of the project D4 within the Sonderforschungsbereich 382 . The work is supported by Prof. Dr. Hanns Ruder Theoretical Astrophysics and Computational Physics at the . The project is in cooperation with RUS (Computing Center at the University of Stuttgart) theoretical background The appereance of fast moving objects can be calculated according to the Theory of Special Relativity. In addition to the Lorentz contraction the effects of finite light speed and aberration play an important role. There already exist systems with relativistic ray tracing and polygon rendering. "Virtual Relativity" has implemented following improvements: For a more detailed presentation see the Vismath 97 paper
A Study Of A Model Cosmology
Contains a cosmology tutorial. Preliminary introduction to General relativity and its application to Cosmology. Also study of stringy matter as a part of the Universe.
http://surhudm.tripod.com/seminarhtml

Extractions: B.Tech Seminar Report on A Study of a model Cosmology Submitted for the partial fulfillment of the requirements for the degree of Bachelor of Technology by More Surhud Shrikant under the guidance of Prof. Urjit A. Yajnik (Department of Physics) Department of Physics Indian Institute of Technology Bombay November 17, 2003 Recent advances in Cosmology have taken us closer to understand our Universe better. We study preliminary General relativity and its application to Cosmology. Initially we develop the background for the Friedmann models and analyse their behaviour. Later we modify them to incorporate recent observations from the Cosmic Background Explorer(COBE), Wilkinson Microwave Anisotropy Probe, Supernova Cosmology Project and Hi-z Supernova project. We also examine the possibility of stringy matter as being a part of our Universe motivated by particle physics considerations and as a possible explanation for the Ultra High Energy Cosmic Rays.
Relativity: The Special And General Theory
The SpaceTime Continuum of the Speical Theory of relativity Considered as a The Structure of Space According to the General Theory of relativity
http://www.marxists.org/reference/archive/einstein/works/1910s/relative/
Being And Becoming In Modern Physics
Discusses implications of general relativity for the philosophy of time; by Steven Savitt.
http://plato.stanford.edu/entries/spacetime-bebecome/

Extractions: Please Read How You Can Help Keep the Encyclopedia Free Does time flow or lapse or pass? Are the future or the past as real as the present? These metaphysical questions have been debated for more than two millennia, with no resolution in sight. Modern physics provides us, however, with tools that enable us to sharpen these old questions and generate new arguments. Does the special theory of relativity, for example, show that there is no passage or that the future is as real as the present? The focus of this entry will be these new questions and arguments. Around 500 B. C. Heraclitus wrote the following:
Special Relativity: Physics
An explanation YOU can understand of the same of the basic concepts underlying special relativity.
http://www.ncsu.edu/felder-public/kenny/papers/relativity.html

Extractions: This paper will cover what I consider to be the fundamental concepts of Einstein's Theory of Special Relativity. Somebody else might totally disagree that these are the "fundamental concepts," of course; for instance, you'll note that I don't touch the fabled E = mc How to Read This Paper Skimming lightly over this paper to get the main ideas will do you about as much good as skimming the Rosetta Stone. If you want to get anything out of this, you really need to set aside a few hours to really read every paragraph, think about (and question) every concept, and work every problem before you read the answer. I can't emphasize this too much: make sure you really understand every paragraph before you go on to the next. These may well be the most difficult (and wonderful) concepts that you have ever seen in your life, and they aren't going to come easily. Math I'm not going to assume any mathematical knowledge here, other than the ability to subtract 2 thousand from 5 thousand (or 1/4 from 1). I am going to assume that you don't melt into slag when you see numbers. If you got through the sentence-before-last as solid matter, you should be all right.
"Relativity" (1996)
relativity Cast, Crew, Reviews, Plot Summary, Comments, Discussion, Taglines, Trailers, Posters, Photos, Showtimes, Link to Official Site, Fan Sites.
http://www.imdb.com/Title?0115332
Home Page
A modern atomist theory of the physical universe.Alternative theory that overturns Einstein's Theory of relativity and returns physics to Classical Mechanics with absolute space and time.
http://atomisttheory03.tripod.com/
INI Programme GMR
Research session at the Isaac Newton Institute for Mathematical Sciences, Cambridge, UK; 8 August 23 December 2005.
http://www.newton.cam.ac.uk/programmes/GMR/

Extractions: Background 8 Aug - 23 Dec 2005 Organisers Prof PT Chrusciel ( Tours ), Prof H Friedrich ( Golm ), Prof P Tod ( Oxford Programme theme General relativity has been around for a long time as a physical theory and an object of mathematical study. It was a subject of intense interest in the 1960s and 1970s when advances included the discovery of the Kerr solution, the study of black holes and singularity theorems and the introduction of asymptopia as a framework for studying asymptotic properties, including gravitational radiation. At the same time there were many mathematical problems which resisted mathematical analysis. In recent years there have been significant advances in our understanding of the topological, geometrical and PDE aspects of general relativity and progress is once again becoming rapid. New results are being obtained, and older results re-proved in greater generality. This programme will be structured around four themes: Elliptic aspects of general relativity: new methods of solving the constraint equations, developments from the solution of the Riemannian Penrose inequality, the study of static and stationary solutions including black holes.
TIME 100: Person Of The Century - A Brief History Of Relativity
What is it? How does it work? Why does it change everything? An easy primer by the world s most famous living physicist.
http://www.time.com/time/time100/poc/magazine/a_brief_history_of_rela6a.html

Extractions: Toward the end of the 19th century scientists believed they were close to a complete description of the universe. They imagined that space was filled everywhere by a continuous medium called the ether. Light rays and radio signals were waves in this ether just as sound is pressure waves in air. All that was needed to complete the theory was careful measurements of the elastic properties of the ether; once they had those nailed down, everything else would fall into place. Soon, however, discrepancies with the idea of an all-pervading ether began to appear. You would expect light to travel at a fixed speed through the ether. So if you were traveling in the same direction as the light, you would expect that its speed would appear to be lower, and if you were traveling in the opposite direction to the light, that its speed would appear to be higher. Yet a series of experiments failed to find any evidence for differences in speed due to motion through the ether. The most careful and accurate of these experiments was carried out by Albert Michelson and Edward Morley at the Case Institute in Cleveland, Ohio, in 1887. They compared the speed of light in two beams at right angles to each other. As the earth rotates on its axis and orbits the sun, they reasoned, it will move through the ether, and the speed of light in these two beams should diverge. But Michelson and Morley found no daily or yearly differences between the two beams of light. It was as if light always traveled at the same speed relative to you, no matter how you were moving.
Physics 1501 - Modern Technology
An undergraduate course offered at the University of Winnepeg on introductory physics. All lecture notes are online, and include material on relativity and quantum theory.
http://theory.uwinnipeg.ca/mod_tech/tech.html
General Relativity Group Homepage
The General relativity Group consists of four members of the Applied Mathematics Group, together with a number of postdoctoral research assistants and Ph.D
http://www.maths.soton.ac.uk/applied/relativity/

Extractions: The General Relativity Group consists of four members of the Applied Mathematics Group , together with a number of postdoctoral research assistants and Ph.D students. At Southampton the major thrust of investigation is the classical theory and its application to astrophysics. The major emphasis of the group is in the increasingly important area of numerical relativity. Other topics studied include singularities and black holes, causality violation, asymptotic structure, cosmic strings, cosmology, pulsating black holes and neutron stars, instabilities in rotating stars, gravitational wave sources and the classification of metrics using algebraic computing. The general relativity group hosted the first British Gravity Meeting in March, 2001. For an overview of general relativity please visit our new GR Explorer site.
A Study Of A Model Cosmology
Contains report of a seminar on a model cosmology. Preliminary introduction to General relativity with application to cosmology.
http://khwarizmi.phy.iitb.ac.in/~surhud/seminarhtml/index.html

Extractions: B.Tech Seminar Report on A Study of a model Cosmology Submitted for the partial fulfillment of the requirements for the degree of Bachelor of Technology by More Surhud Shrikant under the guidance of Prof. Urjit A. Yajnik (Department of Physics) Department of Physics Indian Institute of Technology Bombay November 17, 2003 Recent advances in Cosmology have taken us closer to understand our Universe better. We study preliminary General relativity and its application to Cosmology. Initially we develop the background for the Friedmann models and analyse their behaviour. Later we modify them to incorporate recent observations from the Cosmic Background Explorer(COBE), Wilkinson Microwave Anisotropy Probe, Supernova Cosmology Project and Hi-z Supernova project. We also examine the possibility of stringy matter as being a part of our Universe motivated by particle physics considerations and as a possible explanation for the Ultra High Energy Cosmic Rays.
Understanding Special Relativity
The theory of special relativity in an easily understandable way.
http://www.polarhome.com:763/~rafimoor/english/SRE.htm

Extractions: Home English Hebrew Understanding Special Relativity Table of Content Understanding Special Relativity By Rafi Moor The purpose of this article is to introduce the theory of special relativity in an easily understandable way. It reviews the basic issues in special relativity in a somewhat informal way, without the use of higher mathematics, so that anyone with a basic knowledge of physics can easily understand it. Background When the wavelike nature of light (and other electromagnetic radiation) was discovered at the 18 th , century scientists assumed that there must be some kind of substance in which the waves move. They believed that space was filled with such a substance, and called it ether. In 1887 Albert Michelson and Edward Morley carried out an experiment in which they tried to show the motion of Earth relative to the ether by measuring changes in light speed in different directions. To their astonishment they found no change in the light speed regardless of the relative motion between Earth and the source of light or the ether. As a result of this experiment known as the Michelson Morley experiment, the theory of ether was abandoned by most physicists. In the absence of ether there was also no absolute reference to determine what is at rest and what is moving in space.

121-140 of 176 Back | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | Next 20