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Topic: Galilean relativity

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	NASA - Relativity
		So the principle of Galilean relativity could be stated as: "The laws of nature are the same in all inertial frames," where the laws of nature were understood to be Newton's laws of motion and any laws based on them.
		Galilean transformations apply a principle that is based on Newton's first law: Any frame of reference that is moving at a constant velocity relative to an inertial frame is also an inertial frame.
		The speed of light relative to the lab would therefore be different for light rays moving in different directions relative to the lab.
	www.nasa.gov /worldbook/relativity_worldbook.html (3533 words)

	Principle of relativity - Wikipedia, the free encyclopedia
		Historically, the first principle of relativity that was formulated was a principle of relativity of uniform motion suggested by the observation that there doesn't seem to be a phenomenon in dynamics that will allow an observer to establish a zero point of velocity, nor a preferred direction.
		In Galilean relativity, reference frames are related to each other in an intuitive way: to transform the velocity of an object from one frame to another, the vector representing the velocity of the object is added to the vector representing the velocity difference between the two reference frames.
		General relativity is a theory of gravitation that describes the properties of the mediator of gravitational interaction, in general relativity the mediator of gravitational interaction is deformation of space-time geometry.
	en.wikipedia.org /wiki/Principle_of_relativity (880 words)

	[No title] (Site not responding. Last check: 2007-11-04)
		Special relativity is usually concerned with the behaviour of objects and observers which remain at rest or are moving at a constant velocity.
		Conversely, Maxwell's equations are not consistent with Galilean relativity unless one postulates the existence of a physical aether.
		General relativity is still insufficiently confirmed by experiment to exclude certain alternative theories of gravitation such as the Brans-Dicke theory.
	en-cyclopedia.com /wiki/Special_relativity (3148 words)

	Relativity Tutorial
		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".
		Special relativity was constructed to satisfy Maxwell's equations, which replaced the inverse square law electrostatic force by a set of equations describing the electromagnetic field.
		Relativity also leads to interesting objects such as fl holes, but these are not very relevant to cosmology.
	www.astro.ucla.edu /~wright/relatvty.htm (4024 words)

	Space and Time: Inertial Frames (Stanford Encyclopedia of Philosophy)
		Special relativity might be said to have applied the relativity principle of Newtonian mechanics to Maxwell's electrodynamics, by eliminating the privileged status of the rest-frame of the ether and admitting that the velocity of light is independent of the motion of the source.
		The general theory of relativity was intended to be a generally covariant account of spacetime, and its general covariance was intended to express the general relativity of motion.
		For the free-fall trajectories exhibit relative accelerations, and the relative acceleration of geodesics is a defining characteristic of curved geometry.
	plato.stanford.edu /entries/spacetime-iframes (8695 words)

	Special Relativity - How we got to the postulates (Site not responding. Last check: 2007-11-04)
		The principle of Galilean Relativity says that the laws of motion are the same as viewed in any inertial frame.
		The Galilean transformation has the property that when it is applied to Newton's laws, one gets Newton's laws back again; that is, Newton's laws are invariant under a Galilean transformation.
		This tells you that in order for electricity and magnetism to be consistent with Galilean relativity, then the equations governing electricity and magnetism would have to be different in different inertial frames.
	www.physics.nyu.edu /courses/V85.0020/node61.html (526 words)

	relativity274_03 (Site not responding. Last check: 2007-11-04)
		The special theory of relativity is now believed to apply to all forms of interaction except large-scale gravitational phenomena.
		The postulate of relativity, phrased here more or less as by Poincarè, is consistent with all our experience in mechanics where only relative motion between bodies is relevant, and has been an explicit hypothesis in mechanics since the days of Copernicus, if not before.
		It is a consequence of the validity of both the wave equation in the ether rest frame and Galilean relativity to transform to other inertial frames.
	www.swc.cc.ca.us /~jveal/PHYSICS/Phys274/relativity.htm (3831 words)

	Special and General Relativity Theory (Albert Einstein) (Site not responding. Last check: 2007-11-04)
		Spatial relativity, also called Galilean relativity in honour of Galileo who first formulated the concept of relative motion, is often confused with Einstein's theories.
		Special Relativity is an extremely elegant construct that deals with things moving near or at the speed of light.
		This view of Relativity, that there are different realities, has been picked up unanimously by the public, and hence, has taken on a far greater meaning than that of the original scientific theory, the focus of which was -strictly speaking- on mechanics and electrodynamics.
	www.thebigview.com /spacetime/relativity.html (1531 words)

	results: galileo galilean (Site not responding. Last check: 2007-11-04)
		Galileo Galilei Galilean relativity Imagine a person inside a ship which is sailing on a perfectly smooth lake at constant speed.
		This passeneger is in the ship's windowless hull and, despite it being...
		The Discovery of the Galilean Satellites Courtesy of: NASA/JPL Probably the test significent contribution that Galileo Galilei made to science was the discovery of the four satellites around Jupiter that...
	www.stich-cartoons.de /galileo_galilean.html (265 words)

	relativity
		Galilean relativity and the principle of inertia were the first step to remove the main objection against the heliocentric theory proposed already around 260 BC by Aristarchus of Samos.
		Both, the principle of relativity and the action at a distance were sacrificed by Maxwell when his ether theory of electrodynamics prevailed over Weber's electrodynamics which was based on the action at a distance and was invariant under Galilean transformations.
		One of the first attempts to explain the negative result of the Michelson-Morley experiment was to claim that the ether was dragged along by the earth's motion and hence, the detection of the relative motion of the ether and the earth was impossible.
	www.geocities.com /antonioferrigno/relativity.html (1312 words)

	Galilean Relativity
		According to Jim Doyle, it is commonly understood that the central problem of relativity deals with how people who view an event from different locations can agree on when and where the event happened.
		Much of our deliberations about relativity is tied up in ideas about inertial frames and with what one observer can know about what goes on in other inertial frames.
		Their discernment of relative positions and velocities related to physical processes going on in other cabins (also traveling in constant straight line motion) was not the issue.
	www.datasync.com /~rsf1/gal-rel.htm (1081 words)

	Relativity
		Relativity creates a simple objective tool that empowers traders to recognize tradable 200dma extremes while totally eliminating the visual distortions and emotional bias inherent in chart analysis.
		When gold approaches a relative reading of 0.990 or less on the low side, it is time to consider buying with reckless abandon as long as you think its secular bull market remains in force.
		Relativity is another valuable tool to help us understand when high-probability-for-success trades are possible, but it cannot forecast the future.
	www.zealllc.com /2004/relativity.htm (4427 words)

	Special Relativity Explained by Diagrams
		In the first section, we present the Galilean relativity and the associated space-time diagrams to illustrate various events.
		In relativity, an event is "something" that happens at a given place in space and at a given moment in time.
		K' moves at constant speed (v) along the x axis relative to the K-frame, and t = t' = 0 when O' coincides with O and event E is happening somewhere in space at a given moment in time.
	www.colvir.net /prof/richard.beauchamp/rel-an/rela.htm (1588 words)

	Frames of Reference and Galilean Transformations (Site not responding. Last check: 2007-11-04)
		With regard to spatial coordinates, it is clear that if two frames of reference are moving relative to each other, they will measure different coordinates on their respective meter sticks for the same event, and also different velocities for the same object.
		11.3 is consistent with our intuition: the velocity relative to O is the sum of the velocity of the ball relative to O' and the velocity of O' relative to O.
		Suppose that O' is moving relative to O, at three quarters of the speed of light, instead of 2 cm/s.
	theory.uwinnipeg.ca /mod_tech/node134.html (901 words)

	Principle of relativity
		In general, the principle of relativity is the requirement that the laws of physics be the same for all observers.
		The measurement of time was assumed to be the same for all observers, but the measurements of distance made by an observer differ from those by another depending on the relative velocity between the observers' frames of reference.
		General relativity extended the principle of relativity to accelerated frames of reference in a gravity field.
	www.askfactmaster.com /Galilean_relativity (274 words)

	Relativity - EvoWiki (Site not responding. Last check: 2007-11-04)
		The Theory of Relativity was developed by Albert Einstein, states that time and space are relative concepts and that motion must be defined in relation to a point of reference.
		The theory of Special Relativity or SR was developed by Einstein in 1905 as a generalization of the Lorenz Transformation which resulted from Maxwell's Equations from electromagnetic phenomena to events in the universe at large.
		Special Relativity tells us that from any given reference frame, any other reference frame with a constant relative velocity should appear to experience a slower passage of time, and should have a shorter length along its direction of motion than it would if it were not in relative motion.
	wiki.cotch.net /index.php?title=Relativity&redirect=no (842 words)

	sciforums.com - RCM an Alternative to Relativity
		"Invariance of light" as it is commonly stated or used in Relativity is based on a false premis and that is the failure to understand the nature of light and not actual variation of light speed to remain constant to a moving observer.
		That means that, if Galilean relativity is correct, then radio waves emitted from towers should become non-waves when you are driving in your car.
		If Galilean relativity is correct, then you should not be able to listen to the radio in your car.
	www.sciforums.com /showthread.php?t=31035 (1767 words)

	Georges Metanomski Axioms of Special Relativity
		Galilean Relativity (GalR) postulates that laws of Mechanics are rigorously identical in all Inertial Referentials (IR).
		This Extended Relativity (ER) is usually referred to as Principle of Relativity.
		This hypothesis postulates Extended Relativity and Galilean Transformation, saying that light speed must satisfy the additive speed composition, that observing a rotating double star, we must measure light speed as faster when the star moves towards us, than otherwise.
	evans-experientialism.freewebspace.com /meta_axioms_sr.htm (513 words)

	Modern Physics:Galilean Spacetime Thinking - Wikibooks
		In order to gain an understanding of both Galilean and Einsteinian relativity it is important to begin thinking of space and time as being different dimensions of a four-dimensional space called spacetime.
		The principle of relativity states that the laws of physics are the same in all inertial reference frames.
		The principle of relativity is not cast in stone, but is an educated guess or hypothesis based on extensive experience.
	en.wikibooks.org /wiki/Modern_Physics:Galilean_Spacetime_Thinking (1031 words)

	Anti Relativity : Michelson Morley failed experiment changes everything
		Regardless of the repetitions which followed, this is the experiment upon which the second postulate of special relativity is based.
		Galilean Relativity was Einstien's motivation for postulating light speed constancy.
		Because of the way relative velocities work combined with the construction of the interferometer, all that can be detected is something called a second order effect.
	www.anti-relativity.com /mmx.htm (3685 words)

	MU-Physics: Experiment of the Month #32
		For constant velocity, the landing point of the ball is unaffected by the constant velocity of the van relative to the road.
		In Galilean relativity, analysis is made easier by the fact that the vertical and horizontal components of the motion separate.
		The shift for the 1 meter drop is larger than the shift for the 0.4 meter projectile, but it is not twice as large, as the equation predicts.
	muweb.millersville.edu /~physics/exp.of.the.month/32 (1001 words)

	Fresnel, Fizeau, Hoek, Michelson-Morley, Michelson-Gale and Sagnac in Aetherless Galilean Space (Site not responding. Last check: 2007-11-04)
		The experiments of Fizeau, et al, in the years 1851-1925 were all designed to test for the motion of the Earth through the presumed aether, or to test for the extent to which the aether was constrained and carried in a moving, material medium.
		Not only is there no relative motion between the various components of the apparatus, but there is also no material with a refractive index different from air placed in the path of the beam.
		In special relativity, Einstein effectively replaced the aether with any arbitrary observer, such that motion through the inertial frame of the observer obtained all the characteristics of what was formerly motion through the inertial frame of the aether.
	renshaw.teleinc.com /papers/fizeau/fizeau.stm (3710 words)

	The Relativity of Light
		This equation was first studied by Jean d'Alembert in the 18th century, and it applies to a wide range of physical phenomena. In fact it seems to represent a fundamental aspect of the relationship between space, time, and motion, transcending any particular application.
		The incompatibility of light with the Galilean framework arises not from any conflict with the principle of relativity, but from the tacitly adopted empirical conclusion that two relatively moving systems of inertial coordinates are related to each other by Galilean transformations, so that the composition of co-linear speeds is simply additive.
		As discussed in the previous section, we aren't free to impose this assumption on the class of inertial coordinate systems, because they are fully determined by the requirement for inertia to be homogeneous and isotropic.
	www.mathpages.com /rr/s1-04/1-04.htm (2052 words)

	Special Relativity: Physics
		Galilean Relativity is a part of what we now call "Classical" or "Newtonian" Physics.
		The rest of relativity is a lot like those last two thought experiments, usually done with enough math to rigorously prove the results that I "hand-waved" my way through.
		Ahmed Khaled read my relativity paper (the one you just finished) and had a tremendous number of valuable thoughts and insights, some of which he put on his own Web page.
	www.ncsu.edu /felder-public/kenny/papers/relativity.html (4291 words)

	Galilean Relativity
		This is the relativity, of course in a very rough way.
		In relativity our frame of reference will have got four, but that's other story J. So, if velocity is measured regarding other objects, it is not absolute.
		Galilean relativity concludes that motion must be in a straight line and non accelerated velocity.
	library.thinkquest.org /C0114565/content.php?id=81 (528 words)

	Galilean Relativity
		According to Jim Doyle, it is commonly understood that the central problem of relativity deals with how people who view an event from different locations can agree on when and where the event happened.
		Much of our deliberations about relativity is tied up in ideas about inertial frames and with what one observer can know about what goes on in other inertial frames.
		Their discernment of relative positions and velocities related to physical processes going on in other cabins (also traveling in constant straight line motion) was not the issue.
	www.ebicom.net /~rsf1/gal-rel.htm (1059 words)

	Ejaculation at the speed of light
		Galileo proposed that it was relative velocities that mattered, and not velocities measured relative to the Earth, as Aristotle had previously suggested.
		Anyway, according to Galilean relativity, if one is to ejaculate whilst thrusting inwards at the speed of light, then the relative speed of their ejaculatory semen will be equal to the sum of the two speeds, namely the speed of light plus 45 km/hr.
		In other words, Galilean relativity says that the semen will be travelling faster than the speed of light.
	johnmm.bol.ucla.edu /sexualphysics/ejaculate.htm (713 words)

	Relativity: Inside and Out
		In light of Galilean relativity, however, it is recognized that the center of space is nowhere, and it is neither moving nor at rest.
		In general relativity, not only are position, velocity, time, mass, and energy stripped of their objective existence, but gravity, too, is seen as an imaginary psychological projection with no objective existence independent of the reference frame of an observer.
		The selection of a reference frame in relativity is therefore analogous to the selection of a measurement apparatus in quantum theory insofar as without them, no objective meaning can be given to the quantities which we normally attribute to objects.
	www.integralscience.org /relativity.html (3288 words)

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