1. Relativity Tutorial An illustrated introductory guide to relativity, intended for advanced high school or college students. Large file to download. 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.

2. Theory: Special Relativity (SLAC VVC) A brief overview of the theory of special relativity, and how it pertains to particles at SLAC (Stanford Linear Accelerator) http://www2.slac.stanford.edu/vvc/theory/relativity.html

Skip to main content. Virtual Visitor Center at SLAC Main Topics Home Accelerator Detectors Experiments ... Theory Interactive Areas EGS FGST LAT LAT instrument FGST LAT Simulator ... Cosmic Ray Detector Guided Tour Quick Bits Introduction to Cosmic Rays Environment Glossary More Educational Sites ... Site Map document.write('') 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 supersedes 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.

3. Theory Of Relativity - Wikipedia, The Free Encyclopedia The theory of relativity, or simply relativity, encompasses two theories of Albert Einstein special relativity and general relativity However, the word relativity is http://en.wikipedia.org/wiki/Theory_of_relativity

Theory of relativity From Wikipedia, the free encyclopedia Jump to: navigation search This article is about the scientific concept. For philosophical or sociological theories about relativity, see Relativism . For the silent film, see The Einstein Theory of Relativity Two-dimensional projection of a three-dimensional analogy of space-time curvature described in General Relativity. The theory of relativity , or simply relativity , encompasses two theories of Albert Einstein special relativity and general relativity However, the word "relativity" is sometimes used in reference to Galilean invariance The term "theory of relativity" was based on the expression "relative theory" ( German Relativtheorie ) used by Max Planck in 1906, who emphasized how the theory uses the principle of relativity . In the discussion section of the same paper Alfred Bucherer used for the first time the expression "theory of relativity" ( German Relativitätstheorie Contents Scope Two theory view Special relativity General relativity ... edit Scope The theory of relativity enriched physics and astronomy during the 20th century. When first published, relativity superseded a 200-year-old

4. Relativity — Infoplease.com Encyclopedia relativity. relativity, physical theory, introduced by Albert Einstein, that discards the concept of absolute motion and instead treats only relative motion between two http://www.infoplease.com/ce6/sci/A0841491.html

5. Physics Virtual Bookshelf: Relativity A collection of articles about relativity http://www.upscale.utoronto.ca/GeneralInterest/Relativity.html

Relativity The listings are in roughly the order in which these topics might be taught. Topic Description Author Format Special Theory of Relativity: html pdf The Special Relativity document by Professor Key that is the next listing largely concentrates on the effects predicted by the theory, such as time dilation, length contraction, etc. This document is considerably longer than Professor Key's, and tends to concentrate more on the worldview suggested by the theory. (157k/310k) David M. Harrison html and pdf Special Theory of Relativity A discussion of the postulates of special relativity and their consequences, from a first year physics course that uses minimal mathematics; the entire set of materials from the course is available by clicking here Anthony W. Key html Inertial Frames of Reference html pdf A brief summary of the concept of Inertial Frames of Reference in Newtonian and Einsteinian Physics. (25k/35k) David M. Harrison

6. General Relativity - Wikipedia, The Free Encyclopedia General relativity or the general theory of relativity is the geometric theory of gravitation published by Albert Einstein in 1915. It is the current description of gravitation http://en.wikipedia.org/wiki/General_relativity

General relativity From Wikipedia, the free encyclopedia Jump to: navigation search For a generally accessible and less technical introduction to the topic, see Introduction to general relativity A simulated black hole kilometers with the Milky Way in the background. General relativity Einstein field equations Introduction Mathematical formulation Resources Fundamental concepts Special relativity Equivalence principle World line Riemannian geometry Phenomena Kepler problem Lenses Waves Frame-dragging ... Black hole Equations Linearized Gravity Post-Newtonian formalism Einstein field equations Friedmann equations ... BSSN formalism Advanced theories Kaluza–Klein Quantum gravity Solutions Schwarzschild ... pp-wave Scientists Einstein Minkowski Eddington Lemaître ... e General relativity or the general theory of relativity is the geometric theory of gravitation published by Albert Einstein in 1915. It is the current description of gravitation in modern physics . It generalises special relativity and Newton's law of universal gravitation , providing a unified description of gravity as a geometric property of space and time , or spacetime . In particular, the

7. General Relativity Expo/Science Industry/Spacetime Wrinkles Forward Back Up Map Glossary Information General relativity. Einstein's 1916 paper on General relativity http://archive.ncsa.illinois.edu/Cyberia/NumRel/GenRelativity.html

Forward Back Up Map ... Information General Relativity Einstein's 1916 paper on General Relativity In 1916 Einstein expanded his Special Theory to include the effect of gravitation on the shape of space and the flow of time. This theory, referred to as the General Theory of Relativity , proposed that matter causes space to curve. JPEG Image Embedding Diagrams Picture a bowling ball on a stretched rubber sheet. GIF Image The large ball will cause a deformation in the sheet's surface. A baseball dropped onto the sheet will roll toward the bowling ball. Einstein theorized that smaller masses travel toward larger masses not because they are "attracted" by a mysterious force, but because the smaller objects travel through space that is warped by the larger object. Physicists illustrate this idea using embedding diagrams Contrary to appearances, an embedding diagram does not depict the three-dimensional "space" of our everyday experience. Rather it shows how a 2D slice through familiar 3D space is curved downwards when embedded in flattened hyperspace. We cannot fully envision this hyperspace; it contains seven dimensions, including one for time! Flattening it to 3D allows us to represent the curvature. Embedding diagrams can help us visualize the implications of Einstein's General Theory of Relativity. The Flow of Spacetime Another way of thinking of the curvature of spacetime was elegantly described by Hans von Baeyer. In a prize-winning

8. Relativity Provides information on the history, experiments and paradoxes of relativity. http://nobelprize.org/physics/educational/relativity/

Home FAQ Press Contact Us ... Physics Prize Related Relativity All Educational Productions Physics Prize Related Accelerators Energy from Matter ... Teachers' Questionnaire Relativity The theory of special relativity (or special relativity for short) was established in 1905 by the famous physicist Albert Einstein at the age of 26. Special relativity is of importance in the realm of high relative velocities. It has been thoroughly verified on numerous occasions and has always stood up to the critical tests. Special relativity is now a tool at work, almost daily, in the scientists' calculations and laboratories. The Michelson-Morley Experiment The Postulates of Special Relativity Lorentz Transformations The Twin Paradox ... History of Special Relativity First published: May 15, 2001 Credits: Produced by Nobel Web AB in collaboration with Tommy Ohlsson TO CITE THIS PAGE: MLA style: "Relativity". Nobelprize.org. 31 Oct 2010 http://nobelprize.org/educational/physics/relativity/ About Nobelprize.org

9. Theory Of Relativity Theory Of relativity The basics of Albert Einstein’s theory regarding gravitational phenomena. The assumptions and approximations. http://www.allaboutscience.org/theory-of-relativity.htm

Theory Of Relativity - Factual Implications You are here: Science Theory Of Relativity Theory of Relativity – A Brief History E = mc which reveals the equivalence of mass and energy. When Einstein applied his theory to gravitational fields, he derived the "curved space-time continuum" which depicts the dimensions of space and time as a two-dimensional surface where massive objects create valleys and dips in the surface. This aspect of relativity explained the phenomena of light bending around the sun, predicted black holes as well as the Cosmic Microwave Background Radiation (CMB) a discovery rendering fundamental anomalies in the classic Steady-State hypothesis. For his work on relativity, the photoelectric effect and blackbody radiation, Einstein received the Nobel Prize in 1921. Theory of Relativity – The Basics Physicists usually dichotomize the Theory of Relativity into two parts. The first is the Special Theory of Relativity, which essentially deals with the question of whether rest and motion are relative or absolute, and with the consequences of Einstein’s conjecture that they are relative. The second is the General Theory of Relativity, which primarily applies to particles as they accelerate, particularly due to gravitation, and acts as a radical revision of Newton’s theory, predicting important new results for fast-moving and/or very massive bodies. The General Theory of Relativity correctly reproduces all validated predictions of Newton’s theory, but expands on our understanding of some of the key principles. Newtonian physics had previously hypothesised that gravity operated through empty space, but the theory lacked explanatory power as far as how the distance and mass of a given object could be transmitted through space. General relativity irons out this paradox, for it shows that objects continue to move in a straight line in space-time, but we observe the motion as acceleration because of the curved nature of space-time.

10. Relativity: Definition From Answers.com n. The quality or state of being relative. A state of dependence in which the existence or significance of one entity is solely dependent on that of another. Physics . Special http://www.answers.com/topic/relativity

11. Relativity Trail Special relativity in absolute terms, yet with effectively equivalent inertial frames, i.e. mutuality of determined length contraction. Clock functioning and length are http://relativitytrail.com/

Relativity Trail First edition owners, click here Contact Synopsis ... Infamous Twin Paradox The back cover: Einstein's special theory of relativity, in absolute terms - In special relativity, one makes his measures using clocks, measuring rods and light beams. Einstein's two postulates of special relativity, as used in his treatment, address only what measurements one shall arrive at. In Relativity Trail , you'll be introduced to the absolute form of these postulates, which addresses the absolute nature of things, particularly - clocks, rods and light beams themselves. Upon the absolute form of these postulates depends our ability to understand what is generating the mutual effects of relative uniform motion and, identically, what has created the time differential between reunited clocks. In Relativity Trail , we faithfully diagram Einstein's special theory against an absolute frame of reference which is intrinsic to the evolving structure of our universe. In so doing, Relativity Trail provides its readers with a clear description of: what time keeping is why time keeping and lengths of rods vary with motion why all inertial frames are effectively equivalent why there is no clock paradox why mass varies with motion why E = mc and much more.

12. HowStuffWorks "How Special Relativity Works" The major principles of special relativity (SR) are discussed in an accessible way, via 5 segments, to help you understand the lingo and theories involved. http://www.howstuffworks.com/relativity.htm

HSW.sm.loadPageInfo(959); OAS_AD('TopBanner'); HowStuffWorks Search HowStuffWorks and the web Video Podcasts Blogs Quizzes Games RSS Adventure Animals Auto Culture ... Next Page How Special Relativity Works by John Zavisa Print Cite Feedback ... Recommend Cite This! Close Please copy/paste the following text to properly cite this HowStuffWorks article: Inside this Article Introduction to How Special Relativity Works 1.0 - The Fundamental Properties of the Universe Mass and Energy Light ... See all Everyday Myths articles Physics: Einstein's Equation and Fission Jon Levy/AFP/ Getty Images Pages from Albert Einstein's original manuscript in which he defines his theory of relativity 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

13. Einstein, Albert. 1920. Relativity: The Special And General Theory Online publication of the 1920 edition of Albert Einstein's relativity. http://www.bartleby.com/173/

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14. Ask An Astrophysicist: Relativity This site is intended for students age 14 and up, and for anyone interested in learning about our universe. http://imagine.gsfc.nasa.gov/docs/ask_astro/relativity.html

What's New Site Map NASA Homepage Search: ... Ask an Astrophysicist Current page Black Holes Cosmology Resources for this Topic General Relativity Special Relativity Usenet Physics Frequently Asked Questions List Ned Wright's Relativity Tutorial Library of Past Questions Relativity First time visitors: Please be sure to read our main page Check out the resource links. These are the sites we often point to in answering your questions. Browse through the library of questions below. Also try our Ask an Astrophysicist Search Engine! If your question is still not answered, follow the link at the bottom of this page Library of Past Questions and Answers Space-Time Can you recommend web sites that discuss space time? Have General Relativity and Special Relativity been proven? What evidence is there that supports the theory of curved space? Is gravity just warped space-time? Traveling at Light Speed Why is it not possible to travel at the speed of light? Can you answer my question about energy, space travelers, and relativity? Does anyone have an analysis of time dilation that I could read? Has time dilation been detected in controlled experiments? ... What is the Twin Paradox in Special Relativity and how is it resolved? The Behavior of Light Do photons have mass ?

15. Notes On Special Relativity A standard introduction to special relativity where explanations are based on pictures called spacetime diagrams. http://www.phys.vt.edu/~takeuchi/relativity/notes

College of Science Physics Dept Tatsu Takeuchi Special Relativity > Lecture Notes Special Relativity Lecture Notes Table of Contents Frames of Reference Inertial Frames Laws of Physics in Inertial Frames Newton's Second Law ... Special Relativity Practice Problems If you have any comments or questions on these lecture notes, please email them to takeuchi(AT)vt(DOT)edu

16. Relativity By KCura An electronic discovery solution to streamline legal discovery. kCura's relativity ediscovery software reduces costs of electronic discovery and enables defensible ediscovery. http://kcura.com/relativity/

17. Relativistic Velocities Here is the formula for adding velocities in special relativity when motion occurs in a single direction. http://math.ucr.edu/home/baez/physics/Relativity/SR/velocity.html

[Physics FAQ] Updated by Terence Tao 1997. Original by Philip Gibbs 1996. How Do You Add Velocities in Special Relativity? Suppose an object A is moving with a velocity v relative to an object B , and B is moving with a velocity u (in the same direction) relative to an object C . What is the velocity of A relative to C v u -> A -> B C w -> In non-relativistic mechanics the velocities are simply added and the answer is that A is moving with a velocity w = u+v relative to C . But in special relativity the velocities must be combined using the formula u + v w = - 1 + uv/c If u and v are both small compared to the speed of light c , then the answer is approximately the same as the non-relativistic theory. In the limit where u is equal to c (because C is a massless particle moving to the left at the speed of light), the sum gives c . This confirms that anything going at the speed of light does so in all reference frames. This change in the velocity addition formula is not due to making measurements without taking into account time it takes light to travel or the Doppler effect. It is what is observed after such effects have been accounted for and is an effect of special relativity which cannot be accounted for with newtonian mechanics.

18. Relativity (TV Series 1996–1997) - IMDb Created by Jason Katims. Directed by Arvin Brown, Dennie Gordon. With Kimberly WilliamsPaisley, David Conrad, Cliff De Young, Mary Ellen Trainor. http://www.imdb.com/title/tt0115332/

IMDb Search All Titles TV Episodes Names Companies Keywords Characters Videos Quotes Bios Plots Go More Register Login Help ... More at IMDbPro Relativity 60 min - Drama Own the rights? Add a poster X Users: 109 votes 4 reviews Soap opera about twenty-something lovers who meet in Italy and continue their romance at home in the United States. Side plots deal with various family situations from both of their families. Creator: Jason Katims Release Date: 24 September 1996 (USA) 8 news articles Nominated for Primetime Emmy. Another 2 nominations See more awards Season: Full episode list Year: unknown see all Cast Complete series cast summary: Kimberly Williams-Paisley Isabel Lukens (6 episodes, 1996) David Conrad Leo Roth (6 episodes, 1996) Cliff De Young David Lukens (6 episodes, 1996) Mary Ellen Trainor Eve Lukens (6 episodes, 1996) Jane Adams Karen Lukens (6 episodes, 1996) Poppy Montgomery Jennifer Lukens (6 episodes, 1996) Richard Schiff Barry Roth (6 episodes, 1996) Devon Gummersall Jake Roth (6 episodes, 1996) Lisa Edelstein Rhonda Roth (6 episodes, 1996)

19. Relativity - PC - GameSpy relativity PC at GameSpy Check out the latest relativity cheats, cheat codes, walkthroughs, guides, videos and more! http://pc.gamespy.com/pc/relativity/

20. Introduction To Special Relativity - Wikipedia, The Free Encyclopedia Encyclopedia article giving a brief outline of the basic concepts of special relativity (including simple formulas). http://en.wikipedia.org/wiki/Introduction_to_special_relativity

Introduction to special relativity From Wikipedia, the free encyclopedia Jump to: navigation search This article may require cleanup to meet Wikipedia's quality standards Please improve this article if you can. The talk page may contain suggestions. (October 2008) This article's citation style may be unclear . The references used may be made clearer with a different or consistent style of citation footnoting , or external linking (September 2009) This article is intended as an accessible, non-technical introduction to the subject. For the main encyclopedia article, see Special relativity Albert Einstein during a lecture in Vienna in 1921 In physics special relativity is a fundamental theory about space and time , developed by Albert Einstein in 1905 as a modification of Galilean relativity . (See " History of special relativity " for a detailed account and the contributions of Hendrik Lorentz and Henri Poincaré .) It was able to explain some pressing theoretical and experimental issues in the physics of the late 19th century involving light and electrodynamics , such as the failure of the 1887 Michelson–Morley experiment , which aimed to measure differences in the relative speed of light due to the Earth's motion through the hypothetical luminiferous aether , which was then considered to be the medium of propagation of electromagnetic waves such as light.

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