SimScience - An Introduction To Simplicial Quantum Gravity Contains introductory material on quantum mechanics and relativity and outlines one method of combining the two theories. http://www.simscience.org/membranes/advanced/essay/quantum_grav1.html
Extractions: About three hundred years ago Isaac Newton wrote down rules describing the mechanics of moving objects. He also described gravity as a force that pulls massive objects together. Isaac Newton (1642-1727) We know today that Newtonian physics is really only an approximation that works well in almost every situation that we encounter in everyday life. We can use these rules to describe exactly how a baseball will travel when thrown. We know how to use Newton's laws so well that we can launch a rocket, and give it exactly the right amount of thrust so that it can coast to Jupiter, a planet only 90,000 miles across, but millions of miles distant from earth and orbiting at 30,000 miles per hour. This approximation is not good enough in some situations. If I want to describe the behavior of things on a very small scale, such as the motion of an electron around an atom, I cannot use the same Newtonian rules that I use to describe the motion of a baseball thrown across the infield. For really small-scale physics, I must use a new set of rules proposed in the early 1900's. These rules are called quantum mechanics There is another situation when Newtonian mechanics is not good enough. That is when we want to describe the motion of objects near very large masses like stars and whole galaxies. In these situations we must use another theory developed in the early 1900's, Albert Einstein's
Virtual Trips To Black Holes And Neutron Stars Page Here you will find descriptions and MPEG movies that take you on trips to black holes and neutron stars. These movies are scientifically accurate computer animations using Einstein's General Theory of relativity. http://antwrp.gsfc.nasa.gov/htmltest/rjn_bht.html
Extractions: by Robert Nemiroff ( Michigan Technological University Ever wonder what it would look like to travel to a black hole? A neutron star? If so, you might find this page interesting. Here you will find descriptions and MPEG movies that take you on such exciting trips. These movies are scientifically accurate computer animations made with strict adherence to Einstein's General Theory of Relativity. The descriptions are written to be understandable on a variety of levels - from the casually curious to the professionally inquisitive. It is hoped that students from grade school to graduate school will find these virtual trips educational. "A stimulating, relativistically accurate trip!" The Feynman Professor of Theoretical Physics, California Institute of Technology, Author of "Black Holes and Time Warps - Einstein's Outrageous Legacy" Earth if compressed to ultracompact density and viewed from the photon sphere. Below is a published paper understandable to undergraduates: "Visual Distortions Near a Black Hole and Neutron Star," Nemiroff, R. J. 1993, American Journal of Physics, 61, 619
Departure Technologies Software tool which allows you to visualize and interactively explore your extended family tree. http://www.DepartureTechnologies.com
Differential Gometry And General Relativity A course from the Department of Mathematics at Hofstra University on differential geometry and general relativity. http://www.hofstra.edu/~matscw/diff_geom/tc.html
Extractions: Department of Mathematics, Hofstra University TABLE OF CONTENTS 1. Preliminaries: Distance, Open Sets, Parametric Surfaces and Smooth Functions 2. Smooth Manifolds and Scalar Fields 3. Tangent Vectors and the Tangent Space 4. Contravariant and Covariant Vector Fields ... Download the latest version of the differential geometry/relativity notes in PDF format References and Suggested Further Reading
Welcome To Foundation Physics This work is based on an elementary particle, the PParticle, and includes amongst other topics, discussions of relativity, origin of background radiation, nature of black holes and the nature of light. http://www.foundationphysics.com/
Extractions: Foundation Physics: Preface: This work is based on an elementary particle, termed the 'P-Particle', which is first postulated to be the fundamental constituent of all matter present in the universe. The particle is defined by several axioms and can be regarded as being the quantum of matter. Just as energy is quantised, and energy and mass are interchangeable, then on this basis the idea of mass being quantised is first assumed and subsequently verified. It is subsequently shown that this particle can be identified with the neutrino. From this model, a large number of results are derived which potentially shed a new light on aspects of physics ranging from classical Newtonian mechanics and relativity to quantum mechanics and particle physics. Amongst the topics included are:
Twistor Web A new approach pioneered by Roger Penrose, starting with conformallyinvariant concepts, to the synthesis of quantum theory and relativity. Some papers on-lin. http://users.ox.ac.uk/~tweb/
Welcome To UHyperspace Articles about the Universe, Cosmology, Quantum Mechanics, relativity collection of some FAQ's. http://www.angelfire.com/space2/chaminda/
Extractions: Why is our Universe the way we see it to be? And what will ultimately become of it? These are two fundamental questions which have long interested humankind. In the more than 70 years since the discovery that that the Universe is expanding, we have made some significant steps in understanding how the Universe began and how it must have evolved to be what it is today. We know this: galaxies and clusters of galaxies formed from tiny fluctuations in the early Universe. We can measure these fluctuations by mapping the cosmic background radiation and relate them to the structures which we observe today. However, many challenges remain such as: In the 1920s
Arcusuniverse - Arcun - Uncertainty & Relativity Best solutions for hierarchical system of matter in cosm, world formula, wave mechanics bound with relativity, chat about it, downloads of articles and cohesions http://members.fortunecity.com/arcun/
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: 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.
E.R.E. 2001 This is the site for the Spanish relativity Meeting 2001 which will be held in Madrid at the Polytechnical University from 1821 September 2001. The main topic will be Relativistic Astrophysics. http://debin.etsin.upm.es/ERE2001/idefault.htm
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/
Extractions: The possibility that stars could collapse to form black holes was first theoretically "discovered" in l939 by J. Robert Oppenheimer and H. Snyder, who were manipulating the equations of Einstein's General Relativity. The first black hole believed to be discovered in the physical world, as opposed to the mathematical world of pencil and paper, was Cygnus X-1, about 7000 light years from earth. (A light year, the distance light travels in a year, is about six trillion miles.) Cygnus X-1 was found in 1970. Since then, a dozen excellent black hole candidates have been identified. Many astronomers and astrophysicists believe that massive black holes, with sizes up to ten million times that of our sun, inhabit the centers of energetic galaxies and quasars and are responsible for their enormous energy release. Ironically, Einstein himself did not believe in the existence of black holes, even though they were predicted by his theory. Beginning in 1917, Einstein and others applied General Relativity to the structure and evolution of the universe as a whole. The leading cosmological theory, called the big bang theory, was formulated in 1922 by the Russian mathematician and meteorologist Alexander Friedmann. Friedmann began with Einstein's equations of General Relativity and found a solution to those equations in which the universe began in a state of extremely high density and temperature (the so- called big bang) and then expanded in time, thinning out and cooling as it did so. One of the most stunning successes of the big bang theory is the prediction that the universe is approximately ten billion years old, a result obtained from the rate at which distant galaxies are flying away from each other. This prediction accords with the age of the universe as obtained from very local methods, such as the dating of radioactive rocks on the earth.
General Relativity And Cosmology An online notes from the University of British Columbia featuring simple explanations of cosmological phenomena. http://musr.physics.ubc.ca/~jess/p200/cosm/cosm.html
Extractions: Next: Astronomy As Elementary Particle Physicists direct their attention ``down'' toward the indescribably tiny, so Cosmologists turn their gaze ``upward'' toward the unfathomably huge. Of course, these days both are increasingly likely to be incarnate in the same individual - I'll get to that later. As one who has never looked through a telescope larger than I could carry, I am certain to give short shrift to the magnificent observational science of astronomy , which provides cosmology (a theoretical discipline) with all its data. But a summary of the former without good colour plates of star fields and nebulae would be a terrible waste anyway, so I hope I have motivated the curious to go out and read a good Astronomy book on their own. Moreover, I am so ignorant of General Relativity and most of the fine points of Cosmology that I really have no business writing about either. Therefore I must content myself with a justification in terms of my ``unique point of view,'' whereby I excuse the following distortions.
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
[gr-qc/9605010] Cosmic Topology General relativity does not allow one to specify the topology of space, leaving the possibility that space is multi rather than simply- connected. This paper reviews the mathematical properties of multi-connected spaces, and the different tools to classify them and to analyse their properties. http://fr.arxiv.org/abs/gr-qc/9605010
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
NOVA Online/Einstein Revealed 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/
Extractions: Welcome to the companion Web site to the NOVA program "Einstein Revealed," originally broadcast in October, 1996. This two-hour special presents a penetrating profile of Albert Einstein, who contributed more than any other scientist to our modern vision of physical reality. Here's what you'll find online: Timeline
Extractions: Opernball '04 For writing this page the first time, I used the method of His Majesty Juan Carlos of Spain: I asked my son. So the page was first written November 29, 1995 by Stefan Liebscher. Changing things was not so difficult: The date when I last modified the page you find in the title. Haftungsausschluss Weitere Informationen (im Sinne des obigen Absatzes) zur Rechtsproblematik von Querverweisen finden Sie auf den Seiten der Initiative Freedom for Links
