Christian, et al,

I found your essay clear, well written and nice to read and interesting too. I knew Einstein had changed his mind on GW's (and many things) but not quite how much! OK the links with the topic were a touch homeopathic, but frankly I blame the topic, pregnant with quintupletaly poor assumptions and able to link to anything in physics!

On GW's. I agree they exist and further that they are indeed a 'no brainer' and, this may shock, but I long ago designed a detector which still works perfectly. You tell me if you think it's flawed; I use water but must point out your analogy IS flawed as in space there's no 'surface' or medium interface on which the waves may form. I was then a bit disappointed you didn't get into what GW's 'ARE', which I consider best described simply as 'fluctuations in gravitational potential' due to positional changes (normally orbital) of the massive bodies. Do say if you think that's wrong, but I found definition important for detection.

The set up? It uses the 'large elephant' scenario; There's always a large elephant in the room nobody has noticed; So practically; take a large volume of fluid with a long 'arm' length, then pass a massive body above it, slowly and repeatedly. Sure enough I find a detectable change in level and even a 'flow' corresponding to the motions. Using TWO massive bodies, together, opposite or orthogonally, and at different distances modifies the level and flow in a predictable manner. I have sets of 'tidal prediction' tables, not always precise but very good approximations. You can get copies here; gravity wave tidal predictions.

The large set up and gauge is outside my office, with a max height range of 5.8m when in conjunction and peak flow of 3.1knots. It did need bodies the size of a star and small moon and the liquid volume of the North Sea and Atlantic to get that scale of change, but smaller works too. In the Med the max is some 1.5m (which Venitians are thankful for!)

What I'm pointing out is that this really is exactly the SAME effect as the fluctuating potentials from two BINARY AGN's (or 'black holes' in old money). It's just so familiar and BIG it becomes invisible as we habitually don't apply fully evolved brain power to seeing it!

In fact rather like the classical derivation of QM predictions in my essay!

If you fancy collaborating on a paper I'm up for it, but it may be too shocking for the LIGO lot! Anyway very well written and thank you for the greater definition of history. Another top score coming to counter the non-reader trolling with 1's (I've now reached double figures!)

Very Best

Peter

    • [deleted]

    Dear Christian, et al,

    I have read with a great interest your essay which certainly deserves an appreciation and first of all for its ontological orientation.

    I did not doubt the experimental proof of the wave nature of gravitation, since it confirms my theoretical researches and conclusions concerning the mechanism of interactions. I consider all interactions (including gravitational) as wave reaction to the disturbance of material system caused by change of energy.

    I wish you further creative successes.

    Vladimir Rodin

      Dear Christian and fellow authors,

      Thank you for reading (and bemoaning) my assault on Einstein's physics which I defended on my page. Somebody (could be me) said Einstein was right although he arrived at his results in the wrong way. Anyway your essay is very well written and interesting which made a pleasant reading.

      Permit me to use the assumptions of my Beautiful Universe Model (BU), which is a sort of Cellular Automata description of physics, to speculate about gravitational waves.

      From my diffraction research I have concluded that gravity is akin to the distortion of the dielectric ether around matter - creating a density field that has a gradient index of refraction that - for example- bends light - an idea that also goes back to Thomas Young then Eddington . From there it is an easy step to say that de Broglie-like wave fields surrounding matter are associated with gravitational fields, and that when disturbed by motion this field generates waves.

      So you see that once one is free from the fetters of spacetime formulations physics seems lighter and freer to proceed to new horizons!

      Before dismissing CA theories please consider Gerard 't Hooft's new book showing Quantum Mechanics can emerge from CA. Can relativity be far behind?

      Cheers

      Vladimir

        Dear Peter,

        Thanks for your kind words and for appreciating our Essay.

        Concerning your proposal to detect GWs, the key point is that the effect of a propagating GW on a fluid is should be very weak. Thus, how can one extract the 'flow' corresponding to the motions from the various noises which are, in principle, present? I cannot see your sets of 'tidal prediction' tables because the link that you inserted does not work. Can you kindly re-insert it?

        Thanks again and good luck in the Contest.

        Cheers, Ch.

        P.S.

        As usual, lots of us are having the problem of trolls who give various 1's...

        Dear Vladimir,

        Thanks for your appreciation of our Essay.

        Your idea to consider interactions as wave reaction to the disturbance of material system caused by change of energy is interesting, but I think that it could work for the propagation of the interactions. When one analyzes the sources of the interaction, I think that one needs to go beyond the linear approximation.

        Thanks again and good luck in the Contest.

        Cheers, Ch.

        Dear Vladimir,

        Thanks for your kind comments.

        I do not see your vision of gravitation so different with respect to Einstein's vision. Replacing "dielectric ether" with "space-time" one finds an analogy.

        In addition, I do not want to dismiss CA theories. Gerard 't Hooft's approach is an attempt to insert determinism in quantum mechanics, and I agree with him.

        Thanks again and good luck in the Contest.

        Cheers, Ch.

        Thanks for your appreciation, dear Jim. We will see if we will detect what constitutes the BB in our lifetime. It should be very intriguing. I also agree with you that this will not solve the ultimate mystery but will surely open up more pointed questions about our beginnings. This is the beauty of science.

        Cheers, Ch.

        Christian, et al,

        It's a great time to be a relativist, isn't it? :-)

        You've written a marvelous essay, expertly exposing the importance of LIGO, and the challenges ahead, deserving my highest mark.

        Please allow me to focus on:

        " ... if a GW propagates in a region of space-time where two free-falling test masses are present, the GW effect will drive the masses to oscillate."

        In fact, only the phenomenon of oscillation allows us to know that a mass is present.

        "Concerning the previously cited possibility of ultimately discriminating between the general theory of relativity and extended theories of gravity, only a perfect knowledge of the motion of the test masses, which are the beam-splitter and the mirrors of the interferometer, will permit one to determine if the general theory of relativity is the definitive theory of gravity."

        General relativity was never intended to be the definitive theory of gravity. It was, as you imply, an intermediate step on the way to a unified field theory. If the test particles are falling in a positively curved trajectory (the geodesic of a positive curvature), they will interact. If in a negative trajectory, they won't. What could one possibly mean, however, by a 'negative trajectory'? Einstein said he thought of a quantum "... as a singularity, surrounded by a large vector field. With a large number of quanta a vector field can be composed that differs little from the one we presume for radiation."

        What better candidate for the mother of all fields than the neutrino field? What better source of consciousness than spacetime itself, compelling us to remember a trajectory we can never return to, and which perhaps never existed? I hope you get a chance to read my essay.

        All best,

        Tom

          Dear Christian

          Mathematical ingenuity can establish equivalence between different physical assumptions - so yes a density field can be equated in its effects to that of a field of flexible space-time. My big concern is that some scenarios are nearer to how Nature actually works. What would an alien visitor to Earth choose - a fancy complicated scheme involving the changing of the very substance of the Universe -space and time - locally requiring complicated tensors to describe and depending on nearby masses, or a simple linear density field leaving space, time, and most importantly, observers, out of the picture? Many are aware that Einstein's theories, however they facilitate calculations, lead to a false image of the fundamental workings of Nature, and hence act to block further progress such as Unification of GR with QM.

          Cheers

          Vladimir

          Hi Tom,

          I am happy to re-meet you here in FQXi.

          We are honored that you think our Essay being marvelous, thanks a lot!

          Yes, it is indeed a great time to be a relativist. Neutrino field as the fundamental field is intriguing but a bit speculative.

          Thanks also for the other interesting comments, we will read, comment and score your Essay soon. Good luck in the Contest!

          Cheers, Ch.

          Hi Chris

          The link is here;

          Tidal Prediction Tables My point is that do the weakness of the effect we need a massive body of water. We happen to have natural bodies of water that big (I have one outside my Kent office), AND a handy moon to pass across it in a 13hr cycle (on top of the Suns 24hr cycle, a lower magnitude effect, but the same 'change in position' wrt any point on earth is then due to our rotation). The only problem we then have is that it's all so big and familiar that nobody has NOTICED what it is!! It just needs re-thinking about afresh.

          The induced motion is 'UP and DOWN' as well as a flow' 'background effects' are all easy to calculate and allowed for (as far as Mars anyway) in the prediction tables. We just need to record and adjust for relative interface medium vector and density (air pressure) each time. (We call that 'wind' in the trade!).

          I keep a set of the prediction tables on my yacht as they're essential for racing. Height is the more direct and useful scalar as the Lagrangian flows are slower where water depth is less due to drag. I can report that the height predictions are very precise.

          Do you now see my point? I'm suggesting there's NO fundamental difference in the 'wave' effect from a distant large mass in motion than from nearby small ones!

          The tables also account for epigee etc so can be a useful scientific tool.

          Very best.

          Peter

          Dear Christian

          I invite you and every physicist to read my work "TIME ORIGIN,DEFINITION AND EMPIRICAL MEANING FOR PHYSICISTS, Héctor Daniel Gianni ,I'm not a physicist.

          How people interested in "Time" could feel about related things to the subject.

          1) Intellectuals interested in Time issues usually have a nice and creative wander for the unknown.

          2) They usually enjoy this wander of their searches around it.

          3) For millenniums this wander has been shared by a lot of creative people around the world.

          4) What if suddenly, something considered quasi impossible to be found or discovered such as "Time" definition and experimental meaning confronts them?

          5) Their reaction would be like, something unbelievable,... a kind of disappointment, probably interpreted as a loss of wander.....

          6) ....worst than that, if we say that what was found or discovered wasn't a viable theory, but a proved fact.

          7) Then it would become offensive to be part of the millenary problem solution, instead of being a reason for happiness and satisfaction.

          8) The reader approach to the news would be paradoxically adverse.

          9) Instead, I think it should be a nice welcome to discovery, to be received with opened arms and considered to be read with full attention.

          11)Time "existence" is exclusive as a "measuring system", its physical existence can't be proved by science, as the "time system" is. Experimentally "time" is "movement", we can prove that, showing that with clocks we measure "constant and uniform" movement and not "the so called Time".

          12)The original "time manuscript" has 23 pages, my manuscript in this contest has only 9 pages.

          I share this brief with people interested in "time" and with physicists who have been in sore need of this issue for the last 50 or 60 years.

          Héctor

          Dear Christian Corda,

          To Vladimir Tamari you wrote: "You realized my worst scientific nightmare! I DO NOT WANT TO LIVE IN A WORLD WHERE EINSTEIN'S THEORIES DO NOT WORK!!!!!!!"

          This sounds too emotional to me. I would rather hope for a distinction between correct or at least useful theories on the other hand and untenable or even misleading ones on the other hand. In my essay, I dealt with evolution and used a rational criterion: non-arbitrariness. My results are definitely unwelcome not just to you. Feel challenged.

          Sincerely

          Eckard

          Dear Christian Corda:

          I enjoyed reading your paper. You present an eloquent approach to achieve unification based on GWs. I would like your views on my contest paper on achieving unification -- FROM LAWS TO AIMS & INTENTIONS - A UNIVERSAL MODEL INTEGRATING MATTER, MIND, CONSCIOUSNESS, AND PURPOSE-A. Singh elaborated below. The paper tests and vindicates the hypothesis of the spontaneous decay of the atom as the fundamental reality behind the observed universe which also describes the inner workings of QM resolving physics' outstanding paradoxes and incompleteness.

          FQXi is a unique forum to address key open issues related to science that impact humanity and life. The mainstream science has treated the universe, laws, and fundamental particles as inanimate entities devoid of life, consciousness, or free will. As a result, the mainstream theories of science are also devoid of consciousness or free will. While science, especially quantum mechanics, recognizes the spontaneous free-willed (without any cause) birth and decay of particles out of the Zero-point vacuum as a fundamental physical phenomenon, it refutes existence of free will via consciously labeling it as "Randomness" in nature. This vicious circle has failed science in two ways - first is its erroneous prediction of a purposeless universe and life in it making the science itself purposeless and meaningless from a deeper human perspective. Secondly, ignorance of consciousness or free will which is a fundamental dimension of the universe along with mass/energy/space/time leaves scientific theories incomplete leading to their current paradoxes and internal inconsistencies.

          Just like a dead mother cannot nurture and give birth to a living baby, a dead universe governed by inanimate laws cannot support any living systems within it. Universal consciousness is fundamental to the emergence and sustenance of any living system - quantum or biological. The mathematical laws must be living to give rise to living aims and intentions. If the fundamentality of the consciousness of the universe and laws is not understood, a scientific theory would be like a castle built on sand.

          FQXi forum is participated by brilliant and accomplished scientists representing in-depth knowledge and expertise in diverse fields. I would propose that the forum scientists take on a challenge to enhance and uplift science from its current status quo as an incomplete science of the inanimate (dead) matter to the wholesome science of the living and conscious universe. This would complete science and make it purposeful and meaningful adding to its current successes as a tool for enhancing material life alone. Science deserves its long-awaited recognition to address not only matter but mind as well and not only material but spiritual life as well. Considering the current political and economic threats to the basic survival of science and religious extremism/terrorism threatening the fundamental freedom (free will) of humanity, the role of a wholesome and genuine science has become even more vital to humanity.

          I have forwarded a humble and example proposal detailing how a consciousness-integrated scientific model of the universe entailing matter-mind could be developed that resolves current paradoxes of science including QM, predicts the observed universe, and offers a testable theory via future empirical observations. This proposal and theory are documented in my contest paper.

          I would greatly appreciate any feedback as well as constructive criticism of the proposed approach in my paper to advance physics and cosmology.

          Best Regards

          Avtar Singh

          Dear Avtar,

          Thanks for your kind comments. We are happy that you enjoyed reading our Essay. We will read, comment and score your Essay soon. Good luck in the Contest.

          Cheers, Ch.

          Dear Christian, Reza and Nathan

          I read your essay with great interest. A space-borne experiment called LATOR (Laser Astrometric Test Of Relativity) was proposed more than a decade ago. The experiment would use the International Space Station as a base for interferometry. The solar panels on the ISS point towards the Sun with a high degree of accuracy. A pair of satellites orbiting the Sun would reflect laser light back to the ISS, allowing gravitational parameters to be deduced from changes in path length.

          A variation on this experiment would put the base at a Lagrange point, but even the ISS orbiting Earth is supposed to provide sufficient accuracy to discriminate second-order terms in the various gravitational models. For example, take the dimensionless quantity GM/Rc^2 for the Sun to be about 10^-6, one part in a million, which corresponds to the first-order term in power series expansions. The second-order term is on the order 10^-12. It is only at this level of accuracy that new information about gravitation can be acquired.

          Given the success of LIGO, it seems strange that LATOR has not been supported. The only objection that has come to my attention is the possibility that helium gas could refract the laser beam.

          Do you know if LATOR, or some variation, is being considered for a second-order test of general relativity?

          Best regards,

          Colin

            Dear Christian,

            Many thanks for the kind words about my "provocative" essay .

            I pleasure read your essay, gave him high mark, and understood why many people have questions to him.

            But I'm not embarrassed «confused about the relevance of this essay».

            This dispute about gravity and gravitational waves has the deep roots of the dispute between Descartes and Newton and the dispute is still not resolved.

            "Today it is hard to believe, but contemporaries accused Newton that his theory "returns science in the Middle Ages" Thomas S. Kuhn The Structure of Scientific Revolutions. (1970) . If the bodies are attracted one toonher, then they should spend energy, but from the theory it is not visible, where does the energy come from and how does it replenish? ... There was no (and is no now) a cycle of energy in the theory, and this happened after Descartes, After Descartes introduced the principle of conservation of momentum, which natural science took literally as a life-giving sip of water." L.E. Fedulayev (2009).

            The dispute that you raised about the gravitational waves will allow adequately answer the questions of this contest. The theory of gravitational waves is the key theory of self-organization of matter, therefore we observe gravitational attraction as a mechanism for its realization, which is still to be understood in detail.

            I wish you success in the contest.

            Kind regards,

            Vladimir

              Dear Authors,

              Please, some refinements and judgment:

              Both Poincare and Einstein's Relativity theories are based on Kantian heuristics and Poincare's " Lorentz invariant". However, only Poincare's gravity theory discovered a whole family of consistent theories which cannot be geometrized in a Riemann manifold... Hence, Poincare's relativistic gravity was not able to predict an existence of gravitational waves.

              In historical Kantian context, Poincare 's Relativity is connected with Eddington's Kantianism of a priori constants and later Matvey Bronstein's brilliant physics( author of the first dissertation on quantum gravity and detection of gravitational waves, Leningrad University, Russia, 1934-5 )... Matvey showed that the next step from gravitational waves to quantum gravity of some future unified physics is needed real Post - Kantian Revolution in Space - and - Time geometric algebra ( Eddington developed prototype in the form of so- called " E - Algebra ").

              However, as I showed in my essay recently ( " Kantian Answers "), popular analytical attitude against Kantian transcendental aesthetics represents main difficulties for Physics Unification.

              Best

              Michael

                Dear Colin,

                Thanks for your interesting comments. We are happy to know that your have read our essay with great interest.

                Concerning LATOR, I was informed on the existence of this experiment some years ago, but I must confess that I did not deepened about it. Thus, I cannot tell you if LATOR, or some variation, is being considered for a second-order test of general relativity, which should be of enormous interest. Yes, I agree that it is strange that LATOR has not been supported and not only based on the success of LIGO. In any case, I will take infos on this issue soon.

                Good luck in the Contest, we will read, comment and score your Essay in next days.

                Cheers, Ch.