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| Tags: constancy, light |
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#21
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On May 5, 7:08Â*pm, " wrote:
On 5 mayo, 18:40, rbwinn wrote: On May 5, 2:44 pm, " wrote: On 5 mayo, 17:32, rbwinn wrote: On May 5, 1:44�pm, YBM wrote: rbwinn a �crit : You neglect the fact that if x or x' is negative in the equations x=ct, x'=ct', then either the velocity of light has to be negative or time has to be negative. � You're right that in the case of x=ct, when t in negative, so is x... So what ? The equations you gave would apply only to positive values of x and x', Where did you get this ? I used the equation of propagation of light x=ct, which applies either when t or x are negative or positive, and the LT which apply for any x,t, positive or negative. Well, for example, light is emitted at the origins of S and S' when they coincide. Â*According to Einstein, the light would propagate in S as a sphere with a radius of ct, and Â*in S' as a sphere with a radius of ct', except that the sphere in S' is an oblate sphere because of the distance contraction. Â*So we consider a photon proceeding from the origins of S and S' at t=t'=0 in the Â*-x direction. Â*When a time of t has transpired in S, a time of t' has transpired in S'. Â*The photon is at the coordinate x in S and at the coordinate x' in S'. Â*Both x and x' are negative. Â*Both t and t' are positive. Â*The velocity of the photon is -c, not c as you insist it would be. Â*The Lorentz equations themselves show that x=(-c)t. meaning that a photon is traveling in the +x direction relative to the x axis. � x=ct means that light is traveling in the (Ox) (call this +x if you want) direction and that x=0 at t=0. This equation of movement applies as well for x,t being negative or positive. The Lorentz equation works because it is showing velocity of light, not speed of light as scientists say it does. Â*If the equations were using speed of light, you would be able to reduce them down by the rules of algebra, and they would still work. Â*They will not work if you reduce them down past Â* Â* Â* Â* Â* Â*t'=(t-vx/c^2)/sqrt(1-v^2/c^2) with the equations x=ct, x'=ct', because if you do, the velocity of a photon is wrong. Â*Why not reduce the numerator to t(1-v/c)? Â* Â*If you did, you would have to put a -c into the equation for c every time x was negative. Â*So if you reflect light from a mirror, the velocity of a photon changes, and you have to change from c to -c. The Lorentz equations do this automatically with the value of x, however, they do so at the price of a distance contraction. Â* Â* Â*So what is your theory about how light exists if nothing can be accellerated to the speed of light? Robert B. Winn We all agree with you. So in the interest of science, and since you have the uttermost knowledge about this subject, please disconnect yourself right now from your Internet and start writing a book or paper about this new science. We, in the mean time will contact the editors of some prestigious Journals, such as Science and Nature, and let them know that you are about to provide to the scientific community with the most important discovery of this century, so they can be ready when your work is ready. Miguel Rios- Hide quoted text - What is that supposed to mean? Â*Do I seem like a Party member to you? I will post the equations here. Â*If you do not like them, wander around in darkness with the other scientists of our time. Â* Â* Â* Â* Â* Â* Â* Â* Â* Â* Â*x'=x-vt Â* Â* Â* Â* Â* Â* Â* Â* Â* Â* Â*y'=y Â* Â* Â* Â* Â* Â* Â* Â* Â* Â* Â*z'=z Â* Â* Â* Â* Â* Â* Â* Â* Â* Â* Â*t'=t Â* Â* Â* Â* Â* Â* Â* Â* Â* Â* x=wt Â* Â* Â* Â* Â* Â* Â* Â* Â* Â* x'=wn' Â* Â* Â* Â* Â* Â* Â* Â* Â* Â* w=velocity of light Â* Â* Â* Â* Â* Â* Â* Â* Â* Â*wn'=wt-vt Â* Â* Â* Â* Â* Â* Â* Â* Â* Â* n'=t(1-v/c) OK, it is all there. Â*So what did that change? Â*Do you see any scientists saying that "scientific time" can be called something other than t'? Robert B. Winn Who are you talking to then?. Are you a scientist? Do you see any scientist posting here? Why are you wasting your time with the wrong people? Are you trying to prove something to yourself? It does not matter. Go back and read the charter of the newsgroup. Do you see any prohibition against posting something true on this newsgroup just because scientists all believe something false? Anyone is free to post something here as long as it is about the subject of relativity. My post is on subject. You are unhappy about what I said because it does not conform to European propaganda. There is plenty of European propaganda posted here. If you do not like my post, go study some European propaganda. Robert B. Winn |
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#22
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In sci.physics.relativity, rbwinn
wrote on Mon, 5 May 2008 13:30:45 -0700 (PDT) : On May 5, 12:07*pm, YBM wrote: rbwinn a écrit : On May 5, 11:18?am, YBM wrote: rbwinn wrote: Einstein's own equations for velocity of light do not work in the Lorentz equations if x or x' are negative. Wrong. They work. No, they do not work. *Einstein said that x=ct, x'=ct'. *If x is negative, then * * * * * * * * *t'=(t-vx/c^2)/sqrt (1-v^2/c^2) cannot be used with the equation x=ct. *The velocity of light has to be -c in the equation for t' in order for the equation to work if x is negative. * x=(-c)t, not x=ct. Wrong. Let's assume that x=ct By LT we get : x'= gamma*(x-vt) t'= gamma*(t-vx/c^2) * *where gamma=1/sqrt(1-v^2/c^2) let's have a look at x'/t' (*) under the condition that x=ct : * x'/t' = (x-vt)/(t-vx^2/c^2) = (ct-vt)/(t-vct/c^2) * * * * = t(c-v)/( t (1 - v/c) ) = c(c-v)/(c-v) * * * * = c = x'=ct' (*) the case t'=0 is trivially ok (0=c0). You neglect the fact that if x or x' is negative in the equations x=ct, x'=ct', then either the velocity of light has to be negative or time has to be negative. The substitution x^2 = c^2t^2 works equally well, yielding x'^2 = c^2t'^2. This is a more accurate specification of the problem anyway, as light expands spherically from a point source. [rest snipped] -- #191, Linux sucks efficiently, but Windows just blows around a lot of hot air and vapor. ** Posted from http://www.teranews.com ** |
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#23
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On May 5, 9:08�pm, The Ghost In The Machine
wrote: In sci.physics.relativity, rbwinn �wrote on Mon, 5 May 2008 13:30:45 -0700 (PDT) : On May 5, 12:07�pm, YBM wrote: rbwinn a �crit : On May 5, 11:18?am, YBM wrote: rbwinn wrote: Einstein's own equations for velocity of light do not work in the Lorentz equations if x or x' are negative. Wrong. They work. No, they do not work. �Einstein said that x=ct, x'=ct'. �If x is negative, then � � � � � � � � �t'=(t-vx/c^2)/sqrt (1-v^2/c^2) cannot be used with the equation x=ct. �The velocity of light has to be -c in the equation for t' in order for the equation to work if x is negative. � x=(-c)t, not x=ct. Wrong. Let's assume that x=ct By LT we get : x'= gamma*(x-vt) t'= gamma*(t-vx/c^2) � �where gamma=1/sqrt(1-v^2/c^2) let's have a look at x'/t' (*) under the condition that x=ct : � x'/t' = (x-vt)/(t-vx^2/c^2) = (ct-vt)/(t-vct/c^2) � � � � = t(c-v)/( t (1 - v/c) ) = c(c-v)/(c-v) � � � � = c = x'=ct' (*) the case t'=0 is trivially ok (0=c0). You neglect the fact that if x or x' is negative in the equations x=ct, x'=ct', then either the velocity of light has to be negative or time has to be negative. The substitution x^2 = c^2t^2 works equally well, yielding x'^2 = c^2t'^2. �This is a more accurate specification of the problem anyway, as light expands spherically from a point source. [rest snipped] Well, what about a photon traveling in the +x direction reflected by a mirror back in the direction it came from? I would just say it had a velocity of -c. I know that c^2 seems like a good idea to scientists. (-c)^2=c^2 Robert B. Winn |
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#24
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On May 6, 1:57�am, "harry" wrote:
"rbwinn" wrote in message ... This statement made in an explanation of addition of velocities shows the confusion existing in the minds of scientists about velocity of light. "The constancy of light (Einstein's dictum) tells us that the velocity of light in the forward direction is equal to the velocity of light in the backward direction, i.e. �CF = CB = C." Where did you find that crappy statement? Relative to a set of coordinates S, if a photon is traveling on the x axis in the +x direction, it has a velocity of c. �If a photon is traveling on the x axis in the -x direction, it has a velocity of (-c). �Scientists do not seem to be aware that the Lorentz equations automatically resolve the velocities of photons You are really funny :-) because c is always squared in those equations, and the velocity of a photon is only shown implicitly in the variables x and x'. �Einstein's own equations for velocity of light do not work in the Lorentz equations if x or x' are negative. Great nonsense. :-)) The equations x=ct and x'=ct' should have been �x=wt and x'=wt', where w is the velocity of light. I think that you have given that crap before... [...] Harald Well, Harald, if you have nothing to say, why pretend that you do? You can either say something or not. If not, then why waste the time of others with your little snippets of pretense? If you see something you can disprove, by all means go ahead and disprove it. Being part of a great Religion dedicated to worship of the distance contraction is not going to impress me. The distance contraction is not going to save one soul. Robert B. Winn Robert B. Winn |
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#25
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On 6 mayo, 01:19, rbwinn wrote:
On May 5, 9:08�pm, The Ghost In The Machine wrote: In sci.physics.relativity, rbwinn �wrote on Mon, 5 May 2008 13:30:45 -0700 (PDT) : On May 5, 12:07�pm, YBM wrote: rbwinn a �crit : On May 5, 11:18?am, YBM wrote: rbwinn wrote: Einstein's own equations for velocity of light do not work in the Lorentz equations if x or x' are negative. Wrong. They work. No, they do not work. �Einstein said that x=ct, x'=ct'. �If x is negative, then � � � � � � � � �t'=(t-vx/c^2)/sqrt (1-v^2/c^2) cannot be used with the equation x=ct. �The velocity of light has to be -c in the equation for t' in order for the equation to work if x is negative. � x=(-c)t, not x=ct. Wrong. Let's assume that x=ct By LT we get : x'= gamma*(x-vt) t'= gamma*(t-vx/c^2) � �where gamma=1/sqrt(1-v^2/c^2) let's have a look at x'/t' (*) under the condition that x=ct : � x'/t' = (x-vt)/(t-vx^2/c^2) = (ct-vt)/(t-vct/c^2) � � � � = t(c-v)/( t (1 - v/c) ) = c(c-v)/(c-v) � � � � = c = x'=ct' (*) the case t'=0 is trivially ok (0=c0). You neglect the fact that if x or x' is negative in the equations x=ct, x'=ct', then either the velocity of light has to be negative or time has to be negative. The substitution x^2 = c^2t^2 works equally well, yielding x'^2 = c^2t'^2. �This is a more accurate specification of the problem anyway, as light expands spherically from a point source. [rest snipped] Well, what about a photon traveling in the +x direction reflected by a mirror back in the direction it came from? I would just say it had a velocity of -c. I know that c^2 seems like a good idea to scientists. (-c)^2=c^2 Robert B. Winn Assume you are in a rocket in deep space, and you are not feeling any acceleration force whatsoever. From your window you see nothing (no stars or other objects are visible) but another rocket who appears to be approaching you. Now, which is the correct answer that best describe the reality (or truth) of the situation. a) You are moving at a constant speed approaching a static rocket. b) The rocket you see is moving at a constant speed towards your location. c) Both you and the approaching rocket are moving at constant speeds towards each other. This is the first step in understanding relativity. Miguel Rios |
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#26
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"rbwinn" wrote in message ... On May 6, 1:57?am, "harry" wrote: "rbwinn" wrote in message ... This statement made in an explanation of addition of velocities shows the confusion existing in the minds of scientists about velocity of light. "The constancy of light (Einstein's dictum) tells us that the velocity of light in the forward direction is equal to the velocity of light in the backward direction, i.e. ?CF = CB = C." Where did you find that crappy statement? Relative to a set of coordinates S, if a photon is traveling on the x axis in the +x direction, it has a velocity of c. ?If a photon is traveling on the x axis in the -x direction, it has a velocity of (-c). ?Scientists do not seem to be aware that the Lorentz equations automatically resolve the velocities of photons You are really funny :-) because c is always squared in those equations, and the velocity of a photon is only shown implicitly in the variables x and x'. ?Einstein's own equations for velocity of light do not work in the Lorentz equations if x or x' are negative. Great nonsense. :-)) The equations x=ct and x'=ct' should have been ?x=wt and x'=wt', where w is the velocity of light. I think that you have given that crap before... [...] Harald Well, Harald, if you have nothing to say, why pretend that you do? I told you that I found erroneous claims (and telling you is NOT nothing) as it's useful for you to know that - except of course if you are only here to do some trolling of course... [...] Just trying to help someone who doesn't want to be helped I guess.... Harald |
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#27
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On May 6, 3:29�am, YBM wrote:
rbwinn wrote: Well, you say there are issues with the Galilean transformation equations. �I don't see any. �t'=t. �You have another clock running slower than a t' clock. �Convert the rate of time to t'. �Everything works. �What is the problem you see? Robert B. Winn *you* have issues with the meaning of x,t,c,+/-c, etc. Well, OK, show the issues. x is a coordinate on the x axis of set of coordinates S, t is time in S, c= 186,000 miles per second, the speed of light, +c =c, -c = -186,000 miles per second, meaning velocity in the negative direction on an axis of a set of coordinates. with GT (or any kind of equation btw), this is not that GT or LT has issues... BTW you're just trying to change the subject of the discussion by switching from a plain wrong statement of you (see below) to a fantasy nonsense I won't even try to make sense of. You said : The equations x=ct and x'=ct' should have been �x=wt and x'=wt', where w is the velocity of light. �This can be shown by considering the equation for t'. � � � � � � � � � �t'=(t-vx/c2)/sqrt(1-v2/c2) That is what I said. You cannot substitute x=ct into the equation for t' if x is a negative coordinate. That is why scientists left the equation in an unreduced form with all values for c squared. That way, if the velocity of light is negative, the equation works it out automatically, and scientists do not have to think about it. There is nothing "plain wrong" about what I said. Scientists want to keep their hands over their eyes with regard to this particular thing. Then I've shown you that x=ct (resp. x=-ct) and LT give without any kind of problem : x'=ct' (resp. x=-ct) where c is the speed of light. Well, I do not know what you are saying here. I do not understand the term, (resp. x= -ct) and what you are trying to say with it. I have already said that I am aware that the Lorentz equations automatically resolve velocity of light by showing only speed of light and coordinates, but I have proven that the Lorentz equations are using velocity of light, not just speed of light as scientists try to claim. Einstein and earlier scientists seemed to have a better grasp of velocity because he used to specifically say, velocity of light, as did other scientists of his time. That was one of the factors that led me to examine velocities of photons instead of just believing in an automatic speed of light machine, as scientists of today believe. Then you said that I (and others) have pretended that c is the /velocity/ of light insteed of speed, when no one never did that. No, I said that you believe that the Lorentz equations are using speed of light, not velocity of light. The velocity of light is preserved in the equations in the spatial coordinates because of the equations x=wt x'=wt' where w is the velocity of a photon. Einstein did not use these coordinates. He used x=ct, x'=ct', which only did the job half way. I even lost some time to explain you that, as a matter of fact, this is indeed velocity (as a vector) which appears in the equation of uniform movement : OM=V.t + OA. x=ct or x=-ct being special cases for movements on the x axis, and that in theses cases you were basically right to call +/- c velocities. The Lorentz equations are the same special case. The equations as used by Einstein describe two sets of coordinates, one at rest, and one in motion with a velocity of v relative to the other with the x axis coinciding. I wonder if you even try to read, then understand a single word of what I wrote. No, I don't wonder : I know you didn't. You're not especially talking to scientists here, but to educated people (if you forget demented crank like Androcles, Wilson, srp, etc.). May you consider being on the wrong track from the very beginning and try by yourself to get the point of Relativity from the very beginning ? I mean by that : coordinates, frames, time synchronization procedures, equations of movements, transformations (GT and LT)... I went all through that with scientists on this newsgroup for twenty years. They are all hypnotized by distance contraction. A few years back I finally realized that the Lorentz equations were using velocity of light, not speed of light, from which I was able to see that the Galilean transformation equations can do everything the Lorentz equations do without a distance contraction if you use velocity of light instead of speed. w=velocity of light x=wt x'=wn' x'=x-vt y'=y z'=z t'=t wn'=wt-vt n'=t(1-v/w) w = x/t = x'/n' = (x-vt)/(t-vt/w) = (x-vt)gamma/(t-vx/c^2 gamma =x'Lorentz/t'Lorentz The difference is that I use n' for time on a cesium clock in S', which scientists feel is an affront to "scientific time". n' is really the same as the numerator of the Lorentz equation for t', and results in a time slightly slower than the Lorentz equation gives, eliminating the distance contraction that the Lorentz equations make necessary by their slightly faster clock. The reason why I believe scientists will probably not consider these equations in my lifetime is because they still view time as an entity instead of a relative paramater which helps describe the energy of a system, dating back to "absolute time", the concept of which now comes down to us in the form of "scientific time". Robert B. Winn |
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#28
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rbwinn wrote:
On May 6, 3:29�am, YBM wrote: .... *you* have issues with the meaning of x,t,c,+/-c, etc. Well, OK, show the issues. x is a coordinate on the x axis of set of coordinates S, t is time in S, c= 186,000 miles per second, the speed of light, +c =c, -c = -186,000 miles per second, meaning velocity in the negative direction on an axis of a set of coordinates. Ok, let's see, just below : That is what I said. You cannot substitute x=ct into the equation for t' if x is a negative coordinate. Why ? x=ct is a valid equation of movement even for x0, LT are valid for any x,y,z,t, making the substitution gives x'=ct' which is consistent with RR's postulates, and is valid for any x', even negative. There is NOTHING in any algebraic transformations I used that makes a problem when x or t or x' or t' are negative... Then I've shown you that x=ct (resp. x=-ct) and LT give without any kind of problem : x'=ct' (resp. x=-ct) where c is the speed of light. Well, I do not know what you are saying here. I do not understand the term, (resp. x= -ct) resp. means respectively, so I hadn't to say twice (almost) the same thing : x=ct and LT implies x'=ct' (for any x,t) x=-ct and LT implies x'=-ct' (for any x,t) I have proven that the Lorentz equations are using velocity of light, not just speed of light as scientists try to claim. I have now a terrible doubt. Are you suggestion that x=ct or x=-ct ARE Lorentz equations ?? .... No, I said that you believe that the Lorentz equations are using speed of light, not velocity of light. The velocity of light is preserved in the equations in the spatial coordinates because of the equations x=wt x'=wt' where w is the velocity of a photon. I'm afraid it's true... Theses are not lorentz equations... Einstein did not use these coordinates. He used x=ct, x'=ct', which only did the job half way. It doesn't, using special cases in the LT derivation doesn't meant that the general case won't work at the end... Did you ever solve any kind of identity at school ? As a matter of fact you can plug in LT any equation of movement like : x=u*t + x0 y=v*t + y0 z=w*t + z0 velocity : (u,v,w), speed = sqrt(u^2+v^2+w^2) = c Note that the case considered in classical LT derivation is velocity (c,0,0), and that your fetish special case is velocity (-c,0,0) And you'll get by LT a equation of movement in S' satisfying speed = c. Just do it. [snip nonsense] |
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#29
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On May 6, 7:55Â*am, " wrote:
On 6 mayo, 01:19, rbwinn wrote: On May 5, 9:08�pm, The Ghost In The Machine wrote: In sci.physics.relativity, rbwinn �wrote on Mon, 5 May 2008 13:30:45 -0700 (PDT) : On May 5, 12:07�pm, YBM wrote: rbwinn a �crit : On May 5, 11:18?am, YBM wrote: rbwinn wrote: Einstein's own equations for velocity of light do not work in the Lorentz equations if x or x' are negative. Wrong. They work. No, they do not work. �Einstein said that x=ct, x'=ct'. �If x is negative, then � � � � � � � � �t'=(t-vx/c^2)/sqrt (1-v^2/c^2) cannot be used with the equation x=ct. �The velocity of light has to be -c in the equation for t' in order for the equation to work if x is negative. � x=(-c)t, not x=ct. Wrong. Let's assume that x=ct By LT we get : x'= gamma*(x-vt) t'= gamma*(t-vx/c^2) � �where gamma=1/sqrt(1-v^2/c^2) let's have a look at x'/t' (*) under the condition that x=ct : � x'/t' = (x-vt)/(t-vx^2/c^2) = (ct-vt)/(t-vct/c^2) � � � � = t(c-v)/( t (1 - v/c) ) = c(c-v)/(c-v) � � � � = c = x'=ct' (*) the case t'=0 is trivially ok (0=c0). You neglect the fact that if x or x' is negative in the equations x=ct, x'=ct', then either the velocity of light has to be negative or time has to be negative. The substitution x^2 = c^2t^2 works equally well, yielding x'^2 = c^2t'^2. �This is a more accurate specification of the problem anyway, as light expands spherically from a point source. [rest snipped] Well, what about a photon traveling in the +x direction reflected by a mirror back in the direction it came from? Â*I would just say it had a velocity of -c. I know that c^2 seems like a good idea to scientists. Â*(-c)^2=c^2 Robert B. Winn Assume you are in a rocket in deep space, and you are not feeling any acceleration force whatsoever. From your window you see nothing (no stars or other objects are visible) but another rocket who appears to be approaching you. Now, which is the correct answer that best describe the reality (or truth) of the situation. a) You are moving at a constant speed approaching a static rocket. b) The rocket you see is moving at a constant speed towards your location. c) Both you and the approaching rocket are moving at constant speeds towards each other. This is the first step in understanding relativity. Well, it would depend on how you got into that situation, wouldn't it? This is no different from Einstein's description of a train sitting at the station with another train moving beside it. A psassenger gets confused about which train is moving, but that does not change anything, does it? One train is sitting still on the track, and the other is moving. The train with the slower clock would be the one that is moving. Maybe you could do the same thing with your two spaceships. The one with the slower clock would be the one in motion. If both clocks are at the same rate, they are moving toward each other. Robert B. Winn |
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#30
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On May 6, 8:11�am, "harry" wrote:
"rbwinn" wrote in message ... On May 6, 1:57?am, "harry" wrote: "rbwinn" wrote in message ... This statement made in an explanation of addition of velocities shows the confusion existing in the minds of scientists about velocity of light. "The constancy of light (Einstein's dictum) tells us that the velocity of light in the forward direction is equal to the velocity of light in the backward direction, i.e. ?CF = CB = C." Where did you find that crappy statement? Relative to a set of coordinates S, if a photon is traveling on the x axis in the +x direction, it has a velocity of c. ?If a photon is traveling on the x axis in the -x direction, it has a velocity of (-c). ?Scientists do not seem to be aware that the Lorentz equations automatically resolve the velocities of photons You are really funny :-) because c is always squared in those equations, and the velocity of a photon is only shown implicitly in the variables x and x'. ?Einstein's own equations for velocity of light do not work in the Lorentz equations if x or x' are negative. Great nonsense. :-)) The equations x=ct and x'=ct' should have been ?x=wt and x'=wt', where w is the velocity of light. I think that you have given that crap before... [...] Harald Well, Harald, if you have nothing to say, why pretend that you do? I told you that I found erroneous claims (and telling you is NOT nothing) as it's useful for you to know that - except of course if you are only here to do some trolling of course... [...] Just trying to help someone who doesn't want to be helped I guess.... No, that does not work. If you had seen something wrong, then you could have explained what it was. As it was, you said nothing. Robert B. Winn |
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