![]() |
| 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: paradox, symmetric, twins |
|
|
Thread Tools | Display Modes |
|
#131
|
|||
|
|||
|
"Sylvia Else" wrote in message u... | Sorcerer wrote: | "Sylvia Else" wrote in message ... | | Sorcerer wrote: | | "Sylvia Else" wrote in message u... | | | Sorcerer wrote: | | | | | | | | | Oh, so the stay-at-home triplet has Werner syndrome, or do all | | | relativist dorks suffer from it? | | | | | | The stay at home triplet ages more than the travelling siblings, | | | | Oh really? Why? Werner syndrome perhaps, or some crazy | | mathematics you do not understand? Or are you a crazy troll too? | | | | | | The reason the stay at home person ages more in this situation has been | | adequately explained ad nauseam. | | Only by ****wits. | http://www.androcles01.pwp.blueyonde...minoEffect.GIF | http://www.androcles01.pwp.blueyonde...winParadox.htm | http://www.androcles01.pwp.blueyonde...ket/Rocket.htm | http://www.androcles01.pwp.blueyonde...mart/Smart.htm | http://www.androcles01.pwp.blueyonde...lgol/Algol.htm | http://www.androcles01.pwp.blueyonder.co.uk/GPS/GPS.htm | http://www.androcles01.pwp.blueyonde.../Clockgain.PNG | http://www.androcles01.pwp.blueyonder.co.uk/E^2/EnergySquare.htm | http://www.androcles01.pwp.blueyonde...er/Doppler.htm | http://www.androcles01.pwp.blueyonde...lina/Drive.htm | http://www.androcles01.pwp.blueyonde...nac/Sagnac.htm | http://www.androcles01.pwp.blueyonder.co.uk/AC/AC.htm | http://www.androcles01.pwp.blueyonde...endy/Wendy.htm | | | | Why are you so angry about this? Worried about your inheritance? | | Sylvia. Why are you a ****head? Eager for your inheritance, dork? |
| Ads |
|
#132
|
|||
|
|||
|
Sylvia Else yazdi: maxwell wrote: Hello Ikoluk: Liked your paper, thanks for the reference & discussion of Einstein trying to resolve his own paradox in 1918 of his 1905 problem with his 1916 'solution'. Incidentally, since Einstein spent the rest of his life trying AND FAILING to reconcile his Special Theory (based on Maxwell's electromagnetism) & his theory of gravity, why do people continue to conjoin these irreconcilable theories? The only thing they have in common is the buzzword 'relativity'. Even the String theorists & Gravitational 'foam' gang continue to fail in this attempt at 'Grand Unification. Anyway, back to the Twins. Herbert Dingle in 1962 pointed out that one can readily set up a totally symmetric twin situation where each departs in opposite directions for an equally long time at very high equal speed & then reverse (using the rocket thrusters in reverse which they used to accelerate) & return to the starting point in space. Each twin, with a telescope, will see the other's clock going slow through both legs of the journey (the turnaround is unknown but is equal & can be made insignificant, like the initial acceleration time). The only acceptable symmetric solution (as this is a symmetric problem) is that both have aged equally - so at the point of meeting they will agree that they were viewing an 'optical illusion' through their telescopes. The only remaining question is: do the people on Earth, who never went on the journey, also age at the same rate? On the outgoing journey, each twin will *see* the other's clock running slowly. This a combination of the relativistic slowing of the other clock, together with the red shift effect. On the return journey, each twin will *see* the other's clock running fast. This is a combination of the relativistic slowing of the other clock and the blue shift effect, which more than offsets the slowing. The net effects of the rates *seen* is that when the twins again meet, they are unsurprised to find that their clocks are again synchronised. There no optical illusions involved. During each phase of the journey, if twin A calculates the rate of twin B's clock, based on A's observations, allowing for the red shift, or blue shift, then A will conclude that B's clock is running slowly. A can also calculate what time is shown on B's clock at any instant in A's frame of reference. During the outgoing leg, A will find that B's clock is running behind A's (and getting more so, since it's running slowly). During the ingoing leg, A will find that B's clock is running ahead of A's (but getting less so since it's running slowly). At the point where A changes direction he will note that the calculation of what B's clock shows at that instant jumps forward abruptly. This does not imply that anything unusual happens to B's clock, but just reflects that the change of direction affects the meaning of "that instant" at a place remote from A. The same applies when B considers A. There is no paradox here. Sylvia. The clock rate doesn't depend on red shift/blue shift. Let twin B's clock send a light pulse at the end of each clock. If it sends n light pulses, the twin A will observe exactly n ligth pulses whatever the value of distance is, whatever the value of speed is(provided it is less than c) and whatever the value of the frequency shift factor is. However, while I was thinking about this I have noticed something: time dilation and clock rate dilation are not the same thing! Each tick in a clock is an event and an event's observed time can be different from time dilation. For example one can set a clock by using a light pulse and two mirrors. The pulse is reflected between the mirrors and the time interval between the reflection times of mirror 1 can be considered as one tick of this clock. If the light speed is source dependent then the duration of each tick is the same regardless of the speed of the clock and the time delation. I will explain this in the other thread "relativity vs velocity addition". However, in SR this time depends on the speed. Let the speed of the clock is v. Then the total time would be t=x'/(c-v)+x'/(c+v)=x'.2.c/(c^2-v^2) Since x'=x.sqrt(1-v^2/c^2) it becomes t=2.x/sqrt(c^2-v^2) which is direction independent. There is a version of the symmetric twin paradox where the paradox can only be solved only if we assume the clock rate is the same in all inertial frames. This time the twin's clocks can be started/stopped by a signal send by the observer C. After some time the twin leaves the earth, C broadcast a start signal to them. After a time interval t1, he/she send another signal to stop the clocks of both twin. This occurs during outbound part of the journey. C repeats this process during the inbound half. Let this time the time interval be t2. After the end of experiment, the twins compare their total time ticks. Since the cases are symmetric again, their total ticks must be the same. From the point of view of twin A, his/her clock and twin B's clock starts and stops at the same time because their distances to the observer C are the same at all times. Since t1 and t2 are two arbitrary values and their inbound and outbound speeds can be different, the only explanation for the correct result is that twin B's clock rate is the same with his/her clock rate. So we can derive the following result: "The clock rates are the same in all inertial frames whatever the type of clocks are" This is actually againts my claim that the dilation factor should be direction dependent and makes my speed formula that I have derived in the other threat useless. Lokman Kolukisa |
|
#133
|
|||
|
|||
|
|
| Thread Tools | |
| Display Modes | |
|
|
Similar Threads
|
||||
| Thread | Thread Starter | Forum | Replies | Last Post |
| A Symmetric Twins Conundrum | xilog | The Theory of Relativity | 62 | October 7th 06 11:34 PM |
| The Perfect Paradox of the Twins! | Gerald L. O'Barr | The Theory of Relativity | 7 | March 16th 05 10:07 PM |
| -symmetric- twin paradox | shevek | The Theory of Relativity | 10 | March 4th 05 02:13 AM |
| The physical paradox of the twins. | Gerald L. O'Barr | The Theory of Relativity | 40 | September 2nd 04 05:34 PM |
| Twins paradox | Dio | The Theory of Relativity | 15 | November 19th 03 03:52 AM |