Real-Time Physics

Travel into the future : a half-valid (invalid) consequence of Einstein's postulates

Is Time Travel Possible? - The Science of Doctor Who - Doctor Who - BBC Brian Cox (2:43): "Jim really is a time traveller."

Jim Al-Khalili is not a time traveller in this experiment - the postulates of special relativity do NOT entail time travel into the future. The confusion goes back to 1905 when Einstein informed the gullible world that, although time dilation is symmetrical (either observer sees the other's clock running slow - this is what validly follows from the two postulates), it is still asymmetrical - the stationary clock runs faster than the moving one (this does not follow at all from the postulates):

ON THE ELECTRODYNAMICS OF MOVING BODIES, A. Einstein, 1905: "From this there ensues the following peculiar consequence. If at the points A and B of K there are stationary clocks which, viewed in the stationary system, are synchronous; and if the clock at A is moved with the velocity v along the line AB to B, then on its arrival at B the two clocks no longer synchronize, but the clock moved from A to B lags behind the other which has remained at B by tv^2/2c^2 (up to magnitudes of fourth and higher order), t being the time occupied in the journey from A to B."

This is tantamount to saying that, although elephants are unable to fly, they can still do so by just flapping their ears. Yet the breathtaking impliciations of Einstein's blatant hoax (time travel into the future etc) enchanted the public:

John Barrow FRS: "Einstein restored faith in the unintelligibility of science. Everyone knew that Einstein had done something important in 1905 (and again in 1915) but almost nobody could tell you exactly what it was. When Einstein was interviewed for a Dutch newspaper in 1921, he attributed his mass appeal to the mystery of his work for the ordinary person: "Does it make a silly impression on me, here and yonder, about my theories of which they cannot understand a word? I think it is funny and also interesting to observe. I am sure that it is the mystery of non-understanding that appeals to them...it impresses them, it has the colour and the appeal of the mysterious." Relativity was a fashionable notion. It promised to sweep away old absolutist notions and refurbish science with modern ideas. In art and literature too, revolutionary changes were doing away with old conventions and standards. All things were being made new. Einstein's relativity suited the mood. Nobody got very excited about Einstein's brownian motion or his photoelectric effect but relativity promised to turn the world inside out."

Pentcho Valev

Einstein's relativity is an inconsistency - it predicts that the travelling twin returns both younger and older than his stationary brother. However the polygon scenario introduced by Einstein in 1905 makes the former prediction (youthfulness) demonstrable while the latter (oldness) remains hidden. Here is a reinterpretation of the polygon scenario that validates both predictions:

Let us imagine that the ants spread out on the closed polygonal line are STATIONARY clocks:

Ants on a rectangle

According to Einstein's relativity, if a single moving clock travels along the polygonal line and is consecutively checked against the multiple stationary clocks, it will show less and less time elapsed than them. In terms of ants, the single travelling ant gets younger and younger than stationary brothers it consecutively meets.

Let us reverse the scenario: the multiple clocks/ants are now MOVING - they travel with constant speed along the closed polygonal line and pass a single stationary clock/ant located in the middle of one of the sides of the polygon. Again, the single (stationary this time) clock is consecutively checked against the multiple (moving this time) clocks passing it.

According to Einstein's relativity, the single stationary clock will show less and less time elapsed than the multiple moving clocks consecutively passing it. In terms of ants, the single stationary ant gets younger and younger than moving brothers it consecutively meets.

Clearly Einstein's 1905 constant-speed-of-light postulate entails absurdities and should be rejected as false.

Pentcho Valev

The problem is in the assumption that the electromagnetic phenomenon is independent of the motion of the source.

If Einstein is a black hole and he flashes a light towards us who are some distance from the black hole, will we see the flash of light since, according to the assumption, the phenomenon is independent of the 3-d gravitational translation of the black hole?

Note that according to the principle of the relativity of motion, the converging vectors representing the black hole's gravitational field is equivalent to the diverging vectors representing the black hole's motion聽outwards in all the infinite directions. The black hole remains in place but is essentially moving outwards in all the infinite directions at the equivalent gravitational velocity that exceeds the velocity of light c. Note further that the gravitational field is accelerative. So, the black hole is accelerating outwards in all directions and its momentum increases, but all the while it remains essentially in place.

It is obvious that the assumption that "the phenomenon is independent of the motion of its source" is not thoroughly true.

I am certain that Einstein's relativity of simultaniety is an erroneous idea.

castel

It is mainly a question of the validity of Einstein's proposition of the arbitrary transformations of space and time.

Einstein's space-time transformation idea is wrong. The idea of space-time relativity is wrong.

The right idea is that of strictly the motion transformations. The idea of kinematic relativity is the right idea.

www.kinematicrelativity.com

Herbert Dingle's Unanswered Question

ON THE ELECTRODYNAMICS OF MOVING BODIES, A. Einstein, 1905: "From this there ensues the following peculiar consequence. If at the points A and B of K there are stationary clocks which, viewed in the stationary system, are synchronous; and if the clock at A is moved with the velocity v along the line AB to B, then on its arrival at B the two clocks no longer synchronize, but the clock moved from A to B lags behind the other which has remained at B by tv^2/2c^2 (up to magnitudes of fourth and higher order), t being the time occupied in the journey from A to B."

SCIENCE AT THE CROSSROADS, Herbert Dingle, p.27: "According to the special relativity theory, as expounded by Einstein in his original paper, two similar, regularly-running clocks, A and B, in uniform relative motion, must work at different rates. (...) How is the slower-working clock distinguished?"

Einsteinians, how is the slower-working clock distinguished?

Pentcho Valev

It has been many since I read Paul Davies' book Super Force. Hopefully I remember correctly. In that book he remarked about Herbert Dingle. Paul Davies attended Oxford but only after Herbert Dingle was gone. Paul Davies remarked in his book something close to saying that maybe it was best that they didn't meet. Paul Davies should not have made that remark. His book Super Force was a wild swing in the dark. Herbert Dingle deserves respect. Paul Davies deserves respect. But right is right and that hasn't yet been conclusively determined.

James Putnam

Dingle's question is rhetorical - the slower-working clock cannot be distinguished on the basis of Einstein's 1905 postulates alone. The postulates entail that, as judged from the respective system, either clock runs slower than the other. That is, for an observer in the moving clock's system, the stationary clock at B lags behind the moving clock; for a stationary observer at B, the moving clock lags behind the stationary clock at B.

So Einstein's famous "moving clocks run slow" and "travel into the future is possible" are based on two flaws. Initially Einstein advanced his false constant-speed-of-light postulate, which allowed him to validly deduce that:

Moving clocks run slow, as judged from the stationary system.

Then he illegitimately dropped the last part of the conclusion and informed the gullible world that:

Moving clocks run slow, that is, travel into the future is possible.

Pentcho Valev

Out of what is bad, good can come out. Repetitive posts are bad, but thanks Pentcho for pointing me to a free copy of Herbert Dingle's book. It is a master piece I recommend to the FQXi membership. I also made reference to it in my reply to Tejinder Singh on his essay thread.

time has only a math existence, when observer measure it turns in duration.Attachment #1: 2_On_the_origin_of_the_observer.pdf

Einstein's Nonexistent Space-Time

"Wherever you may be on the space-time continuum, it's time to celebrate!"

It would be difficult to be anywhere on the space-time continuum - it does not exist:

Nima Arkani-Hamed 06:11 : "Almost all of us believe that space-time doesn't really exist, space-time is doomed and has to be replaced by some more primitive building blocks."

WHAT SCIENTIFIC IDEA IS READY FOR RETIREMENT? Steve Giddingss: "Spacetime. Physics has always been regarded as playing out on an underlying stage of space and time. Special relativity joined these into spacetime... (...) The apparent need to retire classical spacetime as a fundamental concept is profound..."

"...says John Norton, a philosopher based at the University of Pittsburgh, Pennsylvania. Norton is hesitant to express it, but his instinct - and the consensus in physics - seems to be that space and time exist on their own. The trouble with this idea, though, is that it doesn't sit well with relativity, which describes space-time as a malleable fabric whose geometry can be changed by the gravity of stars, planets and matter."

"And by making the clock's tick relative - what happens simultaneously for one observer might seem sequential to another - Einstein's theory of special relativity not only destroyed any notion of absolute time but made time equivalent to a dimension in space: the future is already out there waiting for us; we just can't see it until we get there. This view is a logical and metaphysical dead end, says Smolin."

"Was Einstein wrong? At least in his understanding of time, Smolin argues, the great theorist of relativity was dead wrong. What is worse, by firmly enshrining his error in scientific orthodoxy, Einstein trapped his successors in insoluble dilemmas..."

Why is Einstein's space-time nonexistent? Because it is an absurd consequence of Einstein's assumption (postulate) that the speed of light is constant. In fact the speed of light is variable. When an observer starts moving towards a light source with (small) speed v, the frequency he measures shifts from f=c/λ to f'=(c+v)/λ, where c is the speed of the waves relative to a stationary observer and λ is the wavelength.

Question: Why does the frequency shift from f=c/λ to f'=(c+v)/λ?

Answer 1 (fatal for Einstein's relativity): Because the speed of the waves relative to the observer shifts from c to c'=c+v (that is, relative to the observer, the speed of the light is now greater than c).

Answer 2 (possibly saving Einstein's relativity): Because...

There is no reasonable statement that could become Answer 2:

"Doppler effect - when an observer moves towards a stationary source. ...the velocity of the wave relative to the observer is faster than that when it is still."

"Thus, the moving observer sees a wave possessing the same wavelength (...) but a different frequency (...) to that seen by the stationary observer."

"We will focus on sound waves in describing the Doppler effect, but it works for other waves too. (...) Let's say you, the observer, now move toward the source with velocity vO. You encounter more waves per unit time than you did before. Relative to you, the waves travel at a higher speed: v'=v+vO. The frequency of the waves you detect is higher, and is given by: f'=v'/λ=(v+vO)/λ."

Clever Einsteinians have always known that the speed of light varies with the speed of the observer. Here is an implicit confession:

Albert Einstein Institute: "The frequency of a wave-like signal - such as sound or light - depends on the movement of the sender and of the receiver. This is known as the Doppler effect. (...) Here is an animation of the receiver moving towards the source:

stationary receiver

moving receiver

By observing the two indicator lights, you can see for yourself that, once more, there is a blue-shift - the pulse frequency measured at the receiver is somewhat higher than the frequency with which the pulses are sent out. This time, the distances between subsequent pulses are not affected, but still there is a frequency shift: As the receiver moves towards each pulse, the time until pulse and receiver meet up is shortened. In this particular animation, which has the receiver moving towards the source at one third the speed of the pulses themselves, four pulses are received in the time it takes the source to emit three pulses."

_______________________________________

[end of quotation]

Since "the distances between subsequent pulses are not affected", and since "four pulses are received in the time it takes the source to emit three pulses", the speed of the light as measured by the receiver (observer) is:

c' = 4d/t = (4/3)(3d/t) = (4/3)c

where d is the distance between subsequent pulses, t is "the time it takes the source to emit three pulses", and c=3d/t is the initial speed of the light (as measured by the source).

Clearly the speed of light (relative to the observer) varies with the speed of the observer, as predicted by Newton's emission theory of light and in violation of Einstein's relativity.

Pentcho Valev

Pentcho, All,

if space-time doesn't exist as those above quoted people suspect, then there still has to be an explanation for relativity and non simultaneity of events. They are explicable if what exists instead of the space-time continuum is potential sensory data spreading out from its (the data's)source in uni-temporal(one time everywhere) space. That sort of data when received by an observer is fabricated into space-time output as it contains data that has taken different lengths of time to arrive at the observer, giving temporal spread as well as spatial spread in the output manifestation.

To say space-time doesn't exist may be going to far.For example looking at a photograph, of a group of people in the foreground and mountains in the distance -it is a space-time image. The light from the mountains took longer to reach the camera than light from the people.It can be identified as an emergent reality, fabricated from data, and not merely part of the foundational external reality, as are the ink and paper. I really think that if you are going to pull the rug away there needs to be solid ground below, that's what the explanatory framework I continue to describe provides.

"Baumgarte began by discussing special relativity, which Einstein developed, 10 years earlier, in 1905, while he was employed as a patent officer in Bern, Switzerland. Special relativity is based on the observation that the speed of light is always the same, independently of who measures it, or how fast the source of the light is moving with respect to the observer. Einstein demonstrated that as an immediate consequence, space and time can no longer be independent, but should rather be considered a new joint entity called "spacetime."

There was no such "observation". Rather, all reliable evidence shows that the speed of light is variable, as predicted by Newton's emission theory of light:

Introduction to Special Relativity, James H. Smith, p. 42: "We must emphasize that at the time Einstein proposed it [his second postulate], there was no direct experimental evidence whatever for the speed of light being independent of the speed of its source."

"Does the speed of light depend on the speed of its source? Before formulating his theory of special relativity, Albert Einstein spent a few years trying to formulate a theory in which the speed of light depends on its source, just like all material projectiles. Likewise, Walter Ritz outlined such a theory, where none of the peculiar effects of Einstein's relativity would hold. By 1913 most physicists abandoned such efforts, accepting the postulate of the constancy of the speed of light. Yet five decades later all the evidence that had been said to prove that the speed of light is independent of its source had been found to be defective."

"These efforts were long misled by an exaggeration of the importance of one experiment, the Michelson-Morley experiment, even though Einstein later had trouble recalling if he even knew of the experiment prior to his 1905 paper. This one experiment, in isolation, has little force. Its null result happened to be fully compatible with Newton's own emission theory of light. Located in the context of late 19th century electrodynamics when ether-based, wave theories of light predominated, however, it presented a serious problem that exercised the greatest theoretician of the day."

"In addition to his work as editor of the Einstein papers in finding source material, Stachel assembled the many small clues that reveal Einstein's serious consideration of an emission theory of light; and he gave us the crucial insight that Einstein regarded the Michelson-Morley experiment as evidence for the principle of relativity, whereas later writers almost universally use it as support for the light postulate of special relativity. Even today, this point needs emphasis. The Michelson-Morley experiment is fully compatible with an emission theory of light that CONTRADICTS THE LIGHT POSTULATE."

"Relativity and Its Roots" by Banesh Hoffmann, p.92: "There are various remarks to be made about this second principle. For instance, if it is so obvious, how could it turn out to be part of a revolution - especially when the first principle is also a natural one? Moreover, if light consists of particles, as Einstein had suggested in his paper submitted just thirteen weeks before this one, the second principle seems absurd: A stone thrown from a speeding train can do far more damage than one thrown from a train at rest; the speed of the particle is not independent of the motion of the object emitting it. And if we take light to consist of particles and assume that these particles obey Newton's laws, they will conform to Newtonian relativity and thus automatically account for the null result of the Michelson-Morley experiment without recourse to contracting lengths, local time, or Lorentz transformations. Yet, as we have seen, Einstein resisted the temptation to account for the null result in terms of particles of light and simple, familiar Newtonian ideas, and introduced as his second postulate something that was more or less obvious when thought of in terms of waves in an ether. If it was so obvious, though, why did he need to state it as a principle? Because, having taken from the idea of light waves in the ether the one aspect that he needed, he declared early in his paper, to quote his own words, that "the introduction of a 'luminiferous ether' will prove to be superfluous."

Albert Einstein Institute: "One of the three classical tests for general relativity is the gravitational redshift of light or other forms of electromagnetic radiation. However, in contrast to the other two tests - the gravitational deflection of light and the relativistic perihelion shift -, you do not need general relativity to derive the correct prediction for the gravitational redshift. A combination of Newtonian gravity, a particle theory of light, and the weak equivalence principle (gravitating mass equals inertial mass) suffices. (...) The gravitational redshift was first measured on earth in 1960-65 by Pound, Rebka, and Snider at Harvard University..."

Richard Feynman, "QED: The strange theory of light and matter", p. 15: "I want to emphasize that light comes in this form - particles. It is very important to know that light behaves like particles, especially for those of you who have gone to school, where you probably learned something about light behaving like waves. I'm telling you the way it does behave - like particles. You might say that it's just the photomultiplier that detects light as particles, but no, every instrument that has been designed to be sensitive enough to detect weak light has always ended up discovering the same thing: light is made of particles."

Pentcho Valev

This is fun to read all of these old articles. Smolin is getting very close to the truth about time, but he is still blinded like many others by our overwhelming intuition of space. It is very interesting to see him struggle so close to a realization of time.

For some reason, he does not mention the thousands of millisecond pulsars that are the neutron star timekeepers of the heavens and the first dimension of time. He also does not mention that all of these pulsars decay with an average of 0.255 ppb/yr, which is the second dimension of time and the decay of the universe that drives all force.

The arrow of time is implicit in a decaying universe and the galaxies stay together without dark matter and those pesky matter accretions are just the boson destiny of all matter and are no longer mysterious singularities.

Minkowski space-time: a glorious non-entity, Harvey Brown and Oliver Pooley: "What has been shown is that rods and clocks must behave in quite particular ways in order for the two postulates to be true together. But this hardly amounts to an explanation of such behaviour. Rather things go the other way around. It is because rods and clocks behave as they do, in a way that is consistent with the relativity principle, that light is measured to have the same speed in each inertial frame."

But this is a cosmic conspiracy of the highest order, isn't it? Neil deGrasse Tyson and Brian Greene wholeheartedly agree:

Neil deGrasse Tyson: "If everyone, everywhere and at all times, is to measure the same speed for the beam from your imaginary spacecraft, a number of things have to happen. First of all, as the speed of your spacecraft increases, the length of everything - you, your measuring devices, your spacecraft - shortens in the direction of motion, as seen by everyone else. Furthermore, your own time slows down exactly enough so that when you haul out your newly shortened yardstick, you are guaranteed to be duped into measuring the same old constant value for the speed of light. What we have here is a COSMIC CONSPIRACY OF THE HIGHEST ORDER."

Brian Greene: "If space and time did not behave this way, the speed of light would not be constant and would depend on the observer's state of motion. But it is constant; space and time do behave this way. Space and time adjust themselves in an exactly compensating manner so that observations of light's speed yield the same result, regardless of the observer's velocity."

Pentcho Valev

It isn't a cosmic conspiracy at all -its just people not telling the difference between what is seen, the insubstantial output of sensory data processing, and, what exists externally and independently, the unobserved substantial reality, ( and source of EM data.)

It isn't 'concrete' Objects that are shortening but the images produced from the received EM data.

Muddling insubstantial Image manifestations with actualized substantial Objects is a category error as the two kinds of 'object', as described, belong to different categories of object belonging to different categories of reality.

Not a cosmic conspiracy but possibly a human one. Heaven only helps those who help themselves.

If a professor of physics and mathematics and author is unaware that the observer's state of motion affects the speed of light in Pulsar timing observations, Lunar laser ranging, Global Positioning System, the measurement of the otherwise largely isotropic CMBR, in all of which "space and time DID NOT not adjust themselves in an exactly compensating manner so that observations of light's speed yield the same result", this can only be either a human conspiracy or a result of brain washing on a very large scale.

For a report detailing possibility of conspiracy, see 95 Years of Criticism of

the Special Theory of Relativity

For an example of possible brain washing, see my recent exchanges with Armin Nikkah Shirazi in the current essay contest. Armin is the author of the 'photon existence paradox', where going by what Brian Greene says "Each of us carries our own clock, our own monitor of the passage of time...", if a photon carries its own clock and we are told that because it travels at the speed of light clocks don't run for photons, then it means the time of its emission (birth) is the same as the time for its absorption (death), how then can photon exist? Despite formulating this paradox and admitting in evidence that an observer can influence and delay or hasten light arrival times by moving away from or towards incoming light contrary to Lorentz invariance, Armin still upholds special relativity as correct.

Lastly, if "observations of light's speed yield the same result, regardless of the observer's velocity", what then is the observer's velocity, v doing in the Lorentz transformation equations since observations are regardless of it? You claim something is irrelevant in an equation, yet you put that parameter in the equation to have a non-zero value. Is this an example of Truth or Trick as per the theme of this years essay?

Akinbo

Pentcho, I see another example of brainwashing in your exchange with Lawrence on his Essay forum. After providing the reference of reduced light speed IN VACUUM, he waves this aside as having nothing to do with special relativity, saying "it is a quantum effect".

However, in claiming that a postulate is UNIVERSAL, should its applicability not include the quantum realm? How can quantum theory then be unifiable with classical physics if already there is that bone of contention between them, resolution of which must inevitably lead to the death of one of the two theories, if not both?

I just came across this example of brainwashing and felt like pointing it out.

Akinbo

Akinbo,

Einsteinians' reaction to the discovery that the speed of light IN A VACUUM is not constant (published in Science) is an example of brainwashing indeed but a better qualification is "crimestop":

"Crimestop means the faculty of stopping short, as though by instinct, at the threshold of any dangerous thought. It includes the power of not grasping analogies, of failing to perceive logical errors, of misunderstanding the simplest arguments if they are inimical to Ingsoc, and of being bored or repelled by any train of thought which is capable of leading in a heretical direction. Crimestop, in short, means protective stupidity."

Pentcho Valev

Hi Akinbo,

I doubt it is even a human conspiracy.

you wrote if "observations of light's speed yield the same result, regardless of the observer's velocity", what then is the observer's velocity, v doing in the Lorentz transformation equations since observations are regardless of it? You claim something is irrelevant in an equation, yet you put that parameter in the equation to have a non-zero value. Is this an example of Truth or Trick as per the theme of this years essay?"

The transformation shows what would be observed, the manifestation. What is important in calculating that (and therefore included) is the observer's relationship to the potential sensory data carried by the EM radiation, not the EM radiation itself. As how it is intercepted affects what data is received when and thus the appearance of the processed output.