21. Browsing Science Physics Relativity Special Relativity Category Browse Science Physics relativity special Relativity CShip A short overviewof special relativity, filled with relativistic ray traced images. http://www.uksprite.com/search/search/Science/Physics/Relativity/Special_Relativ

/* CSS Menu highlight- By Marc Boussard (marc.boussard@syntegra.fr) Modified by DD for NS4 compatibility Visit http://www.dynamicdrive.com for this script */ var ns4class='' WebSearch Low-cost advertising at UKSprite Join Login @UK.Sprite Home Latest Headlines UK Weather World Weather ... UK Travel Guide Fun TV Guide Lotto e-Greetings Mobile Fun Communicate Email Login Get Free Email Free Text Messages Lifestyle Horoscopes Dating Recipes Health Shop DVD's Books Videos More... Deals Auctions Classified Ads Site Map Browsing: Science Physics Relativity Special Relativity Top Science Physics Relativity Special Relativity C-Ship A short overview of special relativity, filled with relativistic ray traced images. Explains relativistic effects using a theoretical spaceship. http://www.fourmilab.ch/cship/ Preview This Site Dave's Relativity Page "Time Flies When You're Going Nowhere" is dedicated to special relativity, including FTL (faster than light) travel and length contraction. http://www.svsu.edu/~slaven/relativity1.html Preview This Site Einstein's Special Theory of Relativity A quick guide to Einstein's Special Theory of Relativity, with reference to the relativity of simultaneity, from the perspective of someoone who doesn't agree with special relativity http://www.plunks.free-online.co.uk

22. Special-Relativity Special Theory of Relativity. relativity (rèl´etîv¹î-tê), physicaltheory, introduced by Albert Einstein, that discards the http://www.neutron.anl.gov/hyper-physics/special-relativity.html

Special Theory of Relativity relativity (rèl´e-tîv¹î-tê), physical theory, introduced by Albert Einstein , that discards the concept of absolute motion and instead treats only relative motion between two systems or frames of reference. Space and time are no longer viewed as separate, independent entities but rather as forming a four-dimensional continuum called space-time . In 1905 Einstein enunciated the special theory of relativity , in which the hypothesis that the laws of nature are the same in different moving systems also applies to the propagation of light, so that the measured speed of light is constant for all observers regardless of the motion of the observer or of the source of light . From these hypotheses Einstein reformulated the mathematical equations of physics . In most phenomena of ordinary experience the results from the special theory approximate those based on Newtonian dynamics , but the results deviate greatly for phenomena occurring at velocities approaching the speed of light. Among the assertions and consequences of the special theory are the propositions: the maximum velocity attainable in the universe is that of light (c) mass increases with velocity mass and energy are equivalent E=mc objects appear to contract in the direction of motion (Lorentz contraction) the rate of a moving clock seems to decrease as its velocity increases (time dilation) events that appear simultaneous to an observer in one system may not appear simultaneous to an observer in another system.

23. General Term: Special Relativity Special Relativity. A theory There are many ways to discuss specialrelativity (SR); one is to start with empirical data. 1.‘Time http://www.counterbalance.net/physgloss/srel-body.html

Special Relativity A theory developed by Albert Einstein stating that the laws of motion are the same for all inertial (non-accelerating) frames of reference and that the speed of light (in a vacuum) is the same for all inertial reference frames. This leads to the equivalence of mass and energy, time dilation , and length contraction There are many ways to discuss special relativity (SR); one is to start with empirical data = t - x /c , where c is the speed of light. Still these are each tick at the same rate in their own reference system spacetime 3. Implications The immediate implications are a variety of ‘paradoxes’, most of which represent variations on the themes of time dilation and what is its converse, ‘length contraction.’ In effect, all such “paradoxes” arise because we so naturally look at the world as “3+1", i.e., as a 3-dimensional spatial universe changing in time, a perspective lodged in both ordinary human experience and the classical physics of Newton and Galileo . Instead, SR invites us to look at the union of space and time in “spacetime”, often referred to as “3+1 > 4". Here, though time and space measurements vary between moving observers, the measure of the ‘spacetime interval’ between events is invariant.

24. Dave's Relativity Page Time Flies When You're Going Nowhere is dedicated to special relativity, including FTL (faster than light) travel and length contraction. http://www.svsu.edu/~slaven/relativity1.html

Dave's Relativity Page or "Time Flies When You're Going Nowhere" Think Einstein's Theory of Relativity is only for rocket scientists? Well, I've got news for you. I don't think even rocket scientists need to know relativity most of the time! (At least not rocket scientists for the next century or two.) But that doesn't mean you can't learn about it right now. This page and the others linked to it are an introduction to relativity with (almost) no math at all. It's not meant to be complete by any means, but its purpose is to help you understand the principles on which the Special Theory of Relativity is based, and know a few of its more famous implications. First of all, a few words about the scope of this project. The theory of relativity is actually a two-fold work. First, there's the Special Theory of Relativity, published in 1905. This was basically Einstein's resolution of some paradoxes involving the speed of light, and it describes the behavior of objects at very high speeds. About ten years later, Einstein published the General Theory of Relativity, an altogether more mind-blowing theory which provides a more precise description of gravity than Isaac Newton did. Here you will read only about Special Relativity, since I don't know enough about General Relativity to explain it to anyone. But hopefully what's here will be enough for you to enjoy and learn from. If you're ready to go, just put on your thinking cap and click on the first link below:

25. Einstein, Albert. 1920. Relativity: The Special And General Theory Examine the complete text of Einstein's work on the special and general theories of relativity. Provided by Bartleby.com. great teachers with the publication of relativity The special and General Theory, Einsteins own popular translation http://www.bartleby.com/173

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26. Theory: Special Relativity A brief overview of the theory of special relativity, and how it pertains to particles at SLAC (Stanford Category Science Physics relativity special relativity......Theory special relativity. Newton's laws of motion give Theoretical Basisfor special relativity. Einstein's theory of special relativity http://www2.slac.stanford.edu/vvc/theory/relativity.html

Special Relativity Newton's laws of motion give us a complete description of the behavior moving objects at low speeds. The laws are different at speeds reached by the particles at SLAC. Einstein's Special Theory of Relativity describes the motion of particles moving at close to the speed of light. In fact, it gives the correct laws of motion for any particle. This doesn't mean Newton was wrong, his equations are contained within the relativistic equations. Newton's "laws" provide a very good approximate form, valid when v is much less than c . For particles moving at slow speeds (very much less than the speed of light), the differences between Einstein's laws of motion and those derived by Newton are tiny. That's why relativity doesn't play a large role in everyday life. Einstein's theory supercedes Newton's, but Newton's theory provides a very good approximation for objects moving at everyday speeds. Einstein's theory is now very well established as the correct description of motion of relativistic objects, that is those traveling at a significant fraction of the speed of light. Because most of us have little experience with objects moving at speeds near the speed of light, Einstein's predictions may seem strange. However, many years of high energy physics experiments have thoroughly tested Einstein's theory and shown that it fits all results to date.

27. Relativity Tutorial an illustrated introductory guide to relativity This led to the theory of special relativity. In special relativity, the velocity of light is special. http://www.astro.ucla.edu/~wright/relatvty.htm

Relativity Tutorial Galilean Relativity Relativity can be described using space-time diagrams . Contrary to popular opinion, Einstein did not invent relativity. Galileo preceded him. Aristotle had proposed that moving objects (on the Earth) had a natural tendency to slow down and stop. This is shown in the space-time diagram below. Note the curved worldline above. This shows a variable velocity, or an acceleration . Galileo objected to Aristotle's hypothesis, and asked what happened to an object moving on a moving ship. Now it is still moving in its final state. Galileo proposed that it is only relative velocities that matter. Thus a space-time diagram can be transformed by painting it on the side of a deck of cards, and then skewing the deck to one side but keeping the edges along a straight line: Straight worldlines (unaccelerated particles) remain straight in this process. Thus Newton's First Law is preserved, and non-accelerated worldlines are special. This Galilean transformation does not affect the time. Thus two observers moving with respect to each other can still agree on the time, and thus the distance between two objects, which is the difference in their positions measured at equal times, can be defined. This allowed Newton to describe an inverse square law for gravity. But Galilean transformations do not preserve velocity. Thus the statement "The speed limit is 70 mph" does not make sense but don't try this in court. According to relativity, this must be re-expressed as "The magnitude of the relative velocity between your car and the pavement must be less than 70 mph". Relative velocities are OK.

28. Ask The Space Scientist About : Relativity - Special And General - Light Written 1916. Source relativity The special and General Theory © 1920 http://image.gsfc.nasa.gov/poetry/ask/aphyrel.html

Relativity - Special and General - Light How do astronomers tell the difference between the different kinds of redshifts? Could an astronaut use a wrist watch to measure relativistic time dilation? What is it about quantum mechanics that is incompatible with general relativity? How did Roemer measure the speed of light back in the 18th century? ... According to relativity, how much younger are astronauts in earth-orbit after 6 months?

29. April 17: Special Relativity, Spacetime The theory of relativity is traditionally broken into two parts, special and general relativity. special relativity provides a framework for translating physical events and laws into forms appropriate for any frame of reference. http://blueox.uoregon.edu/~karen/astro123/lectures/lec08.html

Relativity The theory of relativity is traditionally broken into two parts, special and general relativity. Special relativity provides a framework for translating physical events and laws into forms appropriate for any frame of reference. General relativity addresses the problem of accelerated motion and gravity. Special Theory of Relativity A key problem for Newtonian physics was the need for absolute space and time when referring to events or interactions. In particular, the problems of light propagation required an medium, an ether, for the light waves to exist within. The Michelson-Morley experiment showed that there was not absolute space and that inertial frames were relative only to themselves. The key point to special relativity is that the speed of light (c=186,000 miles per sec) is constant in all frames of reference. What this means can be best demonstrated by the following scenario: In Newtonian mechanics, quantities such as speed and distance may be transformed from one frame of reference to another, provided that the frames are in uniform motion (i.e. not accelerating). In special relativity, there is a natural upper limit to velocity, the speed of light. And the speed of light the same in all directions with respect to any frame.

30. Special Relativity Offers an account of scientific events leading up to and including Einstein's formulations. Includes hyperlinks to bios and definitions. special relativity. Mathematical Physics index. History Topics Index http://www-groups.dcs.st-and.ac.uk/~history/HistTopics/Special_relativity.html

Special relativity Mathematical Physics index History Topics Index The classical laws of physics were formulated by Newton in the Principia in 1687. According to this theory the motion of a particle has to be described relative to an inertial frame in which the particle, not subjected to external forces, will move at a constant velocity in a straight line. Two inertial frames are related in that they move in a fixed direction at a constant speed with respect to each other. Time in the frames differs by a constant and all times can be described relative to an absolute time. This 17th Century theory was not challenged until the 19th Century when electric and magnetic phenomena were studied theoretically. It had long been known that sound required a medium to travel through and it was quite natural to postulate a medium for the transmission of light. Such a medium was called the ether and many 19th Century scientists postulated an ether with various properties. Cauchy Stokes Thomson and Planck all postulated ethers with differing properties and by the end of the 19th Century light, heat, electricity and magnetism all had their respective ethers. A knowledge that the electromagnetic field was spread with a velocity essentially the same as the speed of light caused Maxwell to postulate that light itself was an electromagnetic phenomenon.

31. Postulates Of Special Relativity The Postulates of special relativity. Back Back to special relativityIndex. Forward Forward to The Paradox of special relativity. http://casa.colorado.edu/~ajsh/sr/postulate.html

The Postulates of Special Relativity Back to Special Relativity: Index Forward to The Paradox of Special Relativity Andrew Hamilton's Homepage Other Relativity and Black Hole links index paradox lightcone ... links The real action begins on the next page, The Paradox of Special Relativity . Logically, however, this page comes first. The postulates of special relativity The theory of special relativity can be derived formally from a small number of postulates. The fundamental postulates of special relativity can be expressed in various ways; you may find different versions of them in different books. The first two postulates below are assertions about the structure of spacetime, while the last two postulates form the heart of special relativity. 1. The Geometry of Spacetime Statement: "Space and time form a 4-dimensional continuum". Watch this 4D hypercube rotate (46K GIF movie) The postulate that spacetime forms a 4-dimensional continuum is a generalization of the classical Galilean concept that space and time form separate 3 and 1 dimensional continua. The postulate of a 4-dimensional spacetime continuum is retained in general relativity. Physicists widely believe that this postulate must ultimately break down, that space and time are quantized over extremely small intervals of space and time, the Planck length (

32. The Special Theory Of Relativity Presents an analytical assessment of the kinematics of special relativity.Category Science Physics relativity special relativity...... 17, 2003 Particles Do Not Exhibit WaveLike Behavior D. S. BirksMar. 14, 2003 A Disproof of relativity Temur Z. Kalanov Mar. http://www3.sympatico.ca/wbabin/paper/

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33. Special Relativity special relativity made Relatively Simple offers information and experiments about special relativity.Category Science Physics relativity special relativity...... Hey, boys and girls! Remember when we used to think that Einstein'sTheory of special relativity was something hard to understand? http://web.wt.net/~cbenton/relativity.htm

THE RELATIVELY SIMPLE PAGE! "Life is the joyous dance of trillions of molecules!" 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. Peacefully Yours, -THE DOCTOR Einstein's Theory of Special Relativity Made Relatively Simple Introduction Experiment 1 Experiment 2 Experiment 3 ... Conclusions

34. Howstuffworks "How Special Relativity Works" A fascinating article that helps you to understand the basics of special relativity! Main Science Physical Science How special relativity Works. http://science.howstuffworks.com/relativity.htm

ComputerStuff AutoStuff ElectronicsStuff ScienceStuff ... PeopleStuff Categories Earth Science Engineering Life Science Physical Science ... Gas Turbine Engines Sponsored By: Explore Stuff Big List of Articles Get the Newsletter Shop or Compare Prices Orbitz - Plan a Trip! ... Physical Science How Special Relativity Works by John Zavisa 1.0 - The Fundamental Properties of the Universe 2.0 - Special Relativity 3.0 - Fun with the Special Theory of Relativity ... Shop or Compare Prices If you are a fan of science fiction, then you know that "relativity" is a fairly common part of the genre. For example, people on Star Trek are always talking about the space-time continuum, worm holes, time dilations and all sorts of other things that are based on the principle of relativity in one way or another. If you are a fan of science you know that relativity plays a big part there as well, especially when talking about things like black holes and astrophysics. If you have ever wanted to understand the fundamentals of relativity, then this edition of How Stuff Works will be incredibly interesting to you. In this edition the major principles of the theory are discussed in an accessible way so that you can understand the lingo and the theories involved. Once you understand these concepts, you will find that scientific news articles and science fiction stories are much more interesting! The links section offers three additional sources of information that you can tap into if you want to learn more.

35. Proof Of The Falsity Of The Special Theory Of Relativity Mathematical proof of the falsity of a popular derivation of the transformation equations in special relativity theory. http://www.homepages.hetnet.nl/~ejlange/SRT.html

Proof of the Falsity of the Special Theory of Relativity A n example of a popular, but faulty derivation of the Lorentz or transformation equations, followed by a philosophical proof of the falsity of the special theory of relativity. © Erik J. Lange 1999 Last updated 17-1-2003 (D-M-Y) Short introduction Today (1999) the theory of relativity by Albert Einstein is still a generally accepted theory. Although there have been raised a number of objections against the theory since its first publication in 1905, none of these have been able to convince the scientific community of the falsity of the theory. On philosophical, mathematical and empirical grounds, there are nevertheless many valid objections against the theory to be found. This article focuses on two of these, in an analysis of a popular derivation of the Lorentz-transformation according to the theory of special relativity and by means of a philosophical argument showing a contradiction between the two postulates of special relativity. The purpose of Einstein's theory was to create a system of equations which would describe the transformation of coordinates from one reference-frame to another. Hereby the two reference-frames have a relative velocity

36. SR1 A growing collection of pages on special relativity, including special relativity in under 15 Minutes!Category Science Physics relativity special relativity...... Guides and Summaries special relativity in under 15 minutes! A quick summaryof special relativity. special relativity Detailed Pages Time Dilation. http://www.btinternet.com/~j.doyle/SR/sr1.htm

Albert Einstein proposed the Special Theory of Relativity in 1905. This "theory" has had a major impact on all our lives, although you may not think so. The purpose of these Web pages is to try to relate the theory in a clear understandable way, with the mathematics and technicalities kept out of the way, unless you really want to know about them. While relativity has a reputation for being difficult much of it can be understood by anyone (and all of it by no one!). I am always interested in any comments or feedback you may have on these pages. If you have any ideas as to how they should develop or what you would like to see on them please let me know. Guides and Summaries: Special Relativity in under 15 minutes! A quick summary of Special Relativity. Special Relativity Detailed Pages: Time Dilation. How time changes as a consequence of very high speed travel. Time Dilation at "Low" Speeds. How is time affected at low speeds, such as when flying? Time Dilation Worked Examples.

37. Special Relativity Made Simple A nonmathematical introduction to the concepts of special relativity.Category Science Physics relativity special relativity......special relativity. Minkowski Spacetime Actually, Minkowski developed this approachto special relativity after Einstein, but it makes the physics simple. http://www.geocities.com/autotheist/Physics/sr.htm

Advanced Physics Made Simple Special Relativity Introduced by Albert Einstein in 1905, this theory was developed to explain the experiment of Michelson and Morley: The Michelson Morley Experiment Think of a baseball pitcher throwing a baseball at 50 mi/hr from the pitchers mound. Then the ball crosses homeplate at 50 mi/hr. Now suppose the pitcher stands in the back of a truck travelling at 50 mi/hr and throws the ball at 50 mi/hr. Then the ball will cross homeplate at 100 mi/hr. This is just natural. In the late 19th century, Michelson and Morley designed an experiment that replaced the baseball with light, and the truck was replaced by the entire Earth. But what they found was not the obvious solution. They found that light travelled at a constant speed. If the pitcher shines a flashlight at the batter, it goes at the same speed as if the pitcher shines the flashlight from the back of a moving truck. Minkowski Spacetime Actually, Minkowski developed this approach to special relativity after Einstein, but it makes the physics simple. You may have heard that time is a dimension just like space. IT IS NOT LIKE SPACE. Lengths measured in space are positive, and they are always positive. Lengths measured in the time dimension are called IMAGINARY, which means that a given length, multiplied by itself, is always negative. ( Since time is a negative dimension and space is a positive dimension, it is possible to have a total length of zero - this is the case for light)

38. Spacetime Wrinkles Major advances in computation are only now enabling scientists to simulate how black holes form, evolve, Category Science Physics Education...... SPACETIME WRINKLES. In 1905, Albert Einstein published his famous special Theoryof relativity and overthrew commonsense assumptions about space and time. http://archive.ncsa.uiuc.edu/Cyberia/NumRel/NumRelHome.html

SPACETIME WRINKLES In 1905, Albert Einstein published his famous Special Theory of Relativity and overthrew commonsense assumptions about space and time. Relative to the observer, both are altered near the speed of light: distances appear to stretch; clocks tick more slowly. A decade and a year later, Einstein further challenged conventional wisdom by describing gravity as the warping of spacetime, not a force acting at a distance. Since then, Einstein's revolutionary insights have largely stood the test of time. One by one, his predictions have been borne out by experiment and observation. But it wasn't until much later that scientists accepted one of the most dramatic ramifications of Einstein's theory of gravitation: the existence of black holes from whose extreme gravity nothing, not even light, can escape. Major advances in computation are only now enabling scientists to simulate how black holes form, evolve, and interact. They're betting on powerful instruments now under construction to confirm that these exotic objects actually exist. You might like to take a two-minute video tour of this exhibit's contents. However, the Quicktime movie is rather large (12.3 MB!), so be patient when downloading. It could take several minutes. (Further information on downloading movies can be obtained from the

39. The Light Cone - An Illuminating Introduction To Relativity (by Rob Salgado) a multimedia introduction to the theory of relativityCategory Science Physics relativity Courses and Tutorials...... What's New. a new tutorial about Visualizing Proper Time in special relativityincluding a new visualization of the Clock Effect/Twin Paradox http://physics.syr.edu/courses/modules/LIGHTCONE/

Module Content Updated: 4 Dec 2001 Module Content Updated: 2 Jun 1997 Homepage Last modified: Tue Dec 4 22:47:11 2001 click to see this Light Cone rendered in VRML The Light Cone an illuminating introduction to relativity Rob Salgado (salgado@physics.syr.edu) What's New a new tutorial about Visualizing Proper Time in Special Relativity including a new visualization of the Clock Effect/Twin Paradox a JAVA applet for the Twin Paradox Applet animations available as Animated-GIFs visualization of a light cone in VRML Animations are available in MPEG and animated-GIF formats. Since March 13, 1996, you are visitor number PREFACE Introduction Unfamiliar Quotations English-Spacetime-Geometry Dictionary PRIMEVAL RELATIVITY EVENTS and SPACETIME Aristotle's Spacetime Introducing the PRINCIPLE OF RELATIVITY: Galileo's Spacetime ... Newton and His Mechanical Laws of Motion SPECIAL RELATIVITY Maxwell and The Electrodynamic Theory of Light Introducing the LIGHT CONE: The Einstein-Minkowski Spacetime Soap Box Seminar Series: The Twin Non-Paradox ... A more illuminating look at the LIGHT CONE GENERAL RELATIVITY Newton, Galileo, and The Laws of Gravitation

40. Introduction To Special Relativity A simple, straightforward introduction to Einstein's Theory of special Relativityaimed at anyone who has completed the sixth grade. hosted by tripod. http://members.tripod.com/conduit9SR/

Get Five DVDs for $.49 each. Join now. Tell me when this page is updated Welcome to The Dog School of Mathematics presentation of The Dummies' Guide to Special Relativity The Special Relativity pages: This page contains the material that was presented at Conduit 9 in Salt Lake City on May 23. Enjoy! Chapter 0: The normal way Chapter 1: Operational Definitions Chapter 2: Einsteins Postulates Chapter 3: Space Trains ... Chapter 11: Faster Than Light? Send any comments, criticisms or reactions to: dogschool@dog.com This site is owned by Arfur Dogfrey Ringmaster: Umeet Singh Want to join the Skip Prev Prev Next Skip Next ... List Sites This Math Online International site owned by Arfur Dogfrey Previous 5 Sites Previous Next ... List Sites

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