![]() |
| If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below. |
|
|||||||
| Tags: addition, correct, falsifies, relativity, velocities |
|
|
Thread Tools | Display Modes |
|
#1
|
|||
|
|||
|
This the correct addition of velocities
w = u + v, and this is the correct Doppler formula for all moving bodies, f' = Exp(-v/c) f From these two equations we can prove time dilation and length contraction are nonsensical artifacts of Einstein's relativity. Consider three inertial observers, A , B and C, moving in a straight line, with velocities v_ba (velocity of B with respect to A), v_cb (velocity of C with respect to B), v_ca (velocity of C with respect to A), Observer B sends a ray of light towards A with frequency f_ba, so it is observed by A with a frequency f_ba'. Observer C sends a ray of light towards B with frequency f_cb, so it is observed by B with a frequency f_cb'. Observer C sends a ray of light towards A with frequency f_ca=f_cb, so it is observed by A with a frequency f_ca'. We have two Doopler effects as input f_ba' = Exp(-v_ba/c) f_ba f_cb' = Exp(-v_cb/c) f_cb and the addition of velocities v_ca = v_ba + v_cb So, the frequency f_ca = f_cb sent by C towards A is observed by A as f_ca' = Exp(-v_ca/c) f_cb This means f_ca' = Exp(-(v_ba + v_cb)/c) f_cb, f_ca' = Exp(-v_ba/c) Exp(- v_cb/c) f_cb, f_ca' = f_ba f_cb Exp(-v_ba/c) Exp(- v_cb/c) f_cb /(f_ba f_cb), f_ca' = f_ba' f_cb' f_cb /(f_ba f_cb), f_ca' = f_ba' f_cb' / f_ba. We can easily see that f_ca' is the frequency that SR can predict to second order of v_ca = v_ba + v_cb. Let's see. Consider the result f_ca' = Exp(-(v_ba + v_cb)/c) f_cb, and the relativistic formula f_ca'' = sqrt((1 - s/c)/(1 + s/c) f_cb, where s = (v_ba + v_cb)/(1 + v_ba v_cb/c^2) is Einstein's addition, which can also be expressed as s = c tanh( arctanh(v_ba/c) + arctanh(v_cb/c) ). Let c=1, and x = arctanh(v_ba/c) + arctanh(v_cb/c). then f_ca'' = sqrt(cosh(2x) -sinh(2x)) f_cb, (f_ca'' / f_cb)^2 = cosh(2x) - sinh(2x), we know that cosh(2x) = (Exp(2x) + Exp(-2x))/2 sinh(2x) = (Exp(2x) - Exp(-2x))/2 so, it is (f_ca'' / f_cb)^2 = Exp( - 2x) then f_ca'' = Exp( - x) f_c and f_ca' = Exp(- (v_ba + v_cb) ) f_cb Now, we can clearly see where those equations disagree. The question is, to what order? f_ca'' / f_ca' = Exp( - x + v_ba + v_cb ), - x + v_ba + v_cb = ln( f_ca'' / f_ca' ), x = arctanh(v_ba) + arctanh(v_cb), So we can define a test parameter A, as A = v_ba + v_cb - arctanh(v_ba) - arctanh(v_cb) = = ln( f_ca'' / f_ca' ), Perform an experimental test to evaluate that A. For a given level of confidence, to what order is still A within the error bars? |
| Ads |
|
#2
|
|||
|
|||
|
|
|
#3
|
|||
|
|||
|
Albertito skrev:
This the correct addition of velocities w = u + v, and this is the correct Doppler formula for all moving bodies, f' = Exp(-v/c) f From these two equations we can prove time dilation and length contraction are nonsensical artifacts of Einstein's relativity. Please explain how 'we' by writing two equations can falsify a theory of physics. -- Paul http://home.c2i.net/pb_andersen/ |
|
#4
|
|||
|
|||
|
On May 1, 7:39 pm, "Paul B. Andersen"
wrote: Albertito skrev: This the correct addition of velocities w = u + v, and this is the correct Doppler formula for all moving bodies, f' = Exp(-v/c) f From these two equations we can prove time dilation and length contraction are nonsensical artifacts of Einstein's relativity. Please explain how 'we' by writing two equations can falsify a theory of physics. -- Paul http://home.c2i.net/pb_andersen/ You are right, 'we' can't. 'We' need one equation. this one: f' = Exp(-v/c) f, plus one experimental test. |
|
#5
|
|||
|
|||
|
On May 1, 4:47*am, Albertito wrote:
This the correct addition of velocities * * * * *w = u + v, Nope. [snip rest, unread] |
|
#6
|
|||
|
|||
|
Albertito wrote:
On May 1, 7:39 pm, "Paul B. Andersen" wrote: Albertito skrev: This the correct addition of velocities w = u + v, and this is the correct Doppler formula for all moving bodies, f' = Exp(-v/c) f From these two equations we can prove time dilation and length contraction are nonsensical artifacts of Einstein's relativity. Please explain how 'we' by writing two equations can falsify a theory of physics. -- Paul http://home.c2i.net/pb_andersen/ You are right, 'we' can't. 'We' need one equation. this one: f' = Exp(-v/c) f, plus one experimental test. "Pluss one experimental test". I see. It is "one experimental test" that falsifies SR. So this "one experimental test" proves the SR prediction for Doppler f' = sqrt ((c+v)/c-v)) f to be wrong. Which experimental test are you referring to? And if this "one experimental test" really falsifies SR, what is then the significance of the equation f' = Exp(-v/c) f? -- Paul http://home.c2i.net/pb_andersen/ |
|
#7
|
|||
|
|||
|
On May 2, 9:16 am, "Paul B. Andersen"
wrote: Albertito wrote: On May 1, 7:39 pm, "Paul B. Andersen" wrote: Albertito skrev: This the correct addition of velocities w = u + v, and this is the correct Doppler formula for all moving bodies, f' = Exp(-v/c) f From these two equations we can prove time dilation and length contraction are nonsensical artifacts of Einstein's relativity. Please explain how 'we' by writing two equations can falsify a theory of physics. -- Paul http://home.c2i.net/pb_andersen/ You are right, 'we' can't. 'We' need one equation. this one: f' = Exp(-v/c) f, plus one experimental test. "Pluss one experimental test". I see. It is "one experimental test" that falsifies SR. So this "one experimental test" proves the SR prediction for Doppler f' = sqrt ((c+v)/c-v)) f to be wrong. Which experimental test are you referring to? Any experimental test that could measure the observed frequency f' with enough accuracy, given that the original frequency f and speed v are assumed to be known. And if this "one experimental test" really falsifies SR, what is then the significance of the equation f' = Exp(-v/c) f? The significance of f' = Exp(-v/c) f, is that bodies can move relatively without any upper bound for their relative speeds. Thus, velocities will add as euclidean vectors, w = u + v. There is no need for time dilation and length contraction, because there is a relative anisotropy for the propagation of light. That relative anisotropy is expressed as c' = c Exp(-v/c) Suppose a source emits electromagnetic pulses towards you (observer), with a width between adjacent pulses of t seconds, it is saying with a frequency of f =1/t . That source is travelling at a relative speed v wrt you. Question: what time t' between adjacent pulses will you measure, or what frequency f' =1/t'? If you apply the standard solution, f' = f (1 - v/c), then you will need some artifact, as time dilation, in order to agree with your observation. If you look deeper at the factor (1 - v/c), you will see it is the first order approximation of the Doppler effect. If you apply the relativistic solution, f' = gamma f (1 - v/c), you will see it includes a second order approximation (1 - v/c + v^2/2c^2). But, there are other higher order terms involved. Actually, gamma (1 - v/c) = sqrt(1 - v/c)/(1 + v/c)) = 1 - v/c + v^2/2c^2 - v^3/2c^3 + v^4/8c^4 - ... This higher order terms impose a severe constraint in any experimental test of SR . Are you suggesting that SR has been tested with success, for its relativistic Doppler, beyond the second order approximation (1 - v/c + v^2/2c^2)? Are you suggesting it has been tested with success even for (1 - v/c + v^2/2c^2 - v^3/2c^3 )? Well, the Doppler factor, Exp(-v/c), I propose, also includes the same second order approximation (1 - v/c + v^2/2c^2). Actually, it is Exp(-v/c) = 1 - v/c + v^2/2c^2 - v^3/6c^3 + v^4/24c^4 - ... So, it suffices to perform an experimenatl test for the third-order approximation A= (1 - v/c + v^2/2c^2 - v^3/6c^3) in my model, and for B= (1 - v/c + v^2/2c^2 - v^3/2c^3 ) in SR, and see which one can predict better the observation. Their respective third-order terms only differ in the ratio (v^3/6c^3) / (v^3/2c^3) = 1/3. Regards |
|
#8
|
|||
|
|||
|
On May 2, 2:47 am, Albert****o wrote:
So, it suffices to perform an experimenatl test for the third-order approximation A= (1 - v/c + v^2/2c^2 - v^3/6c^3) in my model, and for B= (1 - v/c + v^2/2c^2 - v^3/2c^3 ) in SR, and see which one can predict better the observation. Their respective third-order terms only differ in the ratio (v^3/6c^3) / (v^3/2c^3) = 1/3. Albert****o What in the "MMX,KT and IS experiments show zero terms in (v/c)^2 in the RMS framework" didn't you understand? |
|
#9
|
|||
|
|||
|
Albertito skrev:
On May 2, 9:16 am, "Paul B. Andersen" wrote: Albertito wrote: On May 1, 7:39 pm, "Paul B. Andersen" wrote: Albertito skrev: This the correct addition of velocities w = u + v, and this is the correct Doppler formula for all moving bodies, f' = Exp(-v/c) f From these two equations we can prove time dilation and length contraction are nonsensical artifacts of Einstein's relativity. Please explain how 'we' by writing two equations can falsify a theory of physics. -- Paul http://home.c2i.net/pb_andersen/ You are right, 'we' can't. 'We' need one equation. this one: f' = Exp(-v/c) f, plus one experimental test. "Pluss one experimental test". I see. It is "one experimental test" that falsifies SR. So this "one experimental test" proves the SR prediction for Doppler f' = sqrt ((c+v)/c-v)) f to be wrong. Which experimental test are you referring to? Any experimental test that could measure the observed frequency f' with enough accuracy, given that the original frequency f and speed v are assumed to be known. Am I to read this as "I, Albertito, am convinced that any test where the observed frequency f' is measured with enough accuracy would prove the equation f' = sqrt ((c+v)/c-v)) f wrong, but no such experiment is ever actually performed."? In other words, you are not referring any "one experimental test" that falsifies SR, because you don't know about any such test. And if this "one experimental test" really falsifies SR, what is then the significance of the equation f' = Exp(-v/c) f? The significance of f' = Exp(-v/c) f, is that bodies can move relatively without any upper bound for their relative speeds. The only equations that can prove SR wrong are obviously the equations of SR which are used when calculating the predictions of SR. Any other equations you might devise are utterly irrelevant when it comes to falsify SR. It is very simple. As long as no measurement is done which prove a prediction of SR wrong, SR isn't falsified. [..] " | This the correct addition of velocities | w = u + v, | and this is the correct Doppler formula for all moving | bodies, | f' = Exp(-v/c) f | From these two equations we can prove time dilation and | length contraction are nonsensical artifacts of Einstein's | relativity. " No, from these two equations we can't prove SR wrong. What a crazy idea? :-) -- Paul http://home.c2i.net/pb_andersen/ |
|
#10
|
|||
|
|||
|
On May 4, 8:41 pm, "Paul B. Andersen"
wrote: Albertito skrev: On May 2, 9:16 am, "Paul B. Andersen" wrote: Albertito wrote: On May 1, 7:39 pm, "Paul B. Andersen" wrote: Albertito skrev: This the correct addition of velocities w = u + v, and this is the correct Doppler formula for all moving bodies, f' = Exp(-v/c) f From these two equations we can prove time dilation and length contraction are nonsensical artifacts of Einstein's relativity. Please explain how 'we' by writing two equations can falsify a theory of physics. -- Paul http://home.c2i.net/pb_andersen/ You are right, 'we' can't. 'We' need one equation. this one: f' = Exp(-v/c) f, plus one experimental test. "Pluss one experimental test". I see. It is "one experimental test" that falsifies SR. So this "one experimental test" proves the SR prediction for Doppler f' = sqrt ((c+v)/c-v)) f to be wrong. Which experimental test are you referring to? Any experimental test that could measure the observed frequency f' with enough accuracy, given that the original frequency f and speed v are assumed to be known. Am I to read this as "I, Albertito, am convinced that any test where the observed frequency f' is measured with enough accuracy would prove the equation f' = sqrt ((c+v)/c-v)) f wrong, but no such experiment is ever actually performed."? In other words, you are not referring any "one experimental test" that falsifies SR, because you don't know about any such test. And if this "one experimental test" really falsifies SR, what is then the significance of the equation f' = Exp(-v/c) f? The significance of f' = Exp(-v/c) f, is that bodies can move relatively without any upper bound for their relative speeds. The only equations that can prove SR wrong are obviously the equations of SR which are used when calculating the predictions of SR. Any other equations you might devise are utterly irrelevant when it comes to falsify SR. It is very simple. As long as no measurement is done which prove a prediction of SR wrong, SR isn't falsified. [..] " | This the correct addition of velocities | w = u + v, | and this is the correct Doppler formula for all moving | bodies, | f' = Exp(-v/c) f | From these two equations we can prove time dilation and | length contraction are nonsensical artifacts of Einstein's | relativity. " No, from these two equations we can't prove SR wrong. What a crazy idea? :-) -- Paul http://home.c2i.net/pb_andersen/ "Your theory is crazy, but it's not crazy enough to be true" [Niels Bohr, to a young physicist] There is a better way to falsify SR. Find a theory that can do the same predictions that SR. A theory that could even predict phenomena SR can't. Test that theory with success, proving that it can predict the same observable phenomena SR can, but with better accuracy. OTOH, if your experimental tests only intend to falsify SR, then if SR is actually falsified, what theory is ready to replace it? |
| Thread Tools | |
| Display Modes | |
|
|
Similar Threads
|
||||
| Thread | Thread Starter | Forum | Replies | Last Post |
| The correct Doppler formula falsifies relativity | Albertito | The Theory of Relativity | 12 | May 1st 08 12:09 AM |
| Relativistic vector addition/subtraction of velocities | Greg Egan | Current Physics Research (Moderated) | 11 | April 3rd 07 07:21 PM |
| Relativistic vector addition/subtraction of velocities | Greg Egan | Current Physics Research (Moderated) | 1 | January 17th 07 12:22 PM |
| Relativistic vector addition/subtraction of velocities | Chalky | Current Physics Research (Moderated) | 8 | January 8th 07 08:01 PM |
| addition of velocities | vertvergon@msn.com | The Theory of Relativity | 25 | August 9th 06 12:40 PM |