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Farsight

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Everything posted by Farsight

  1. You're actually touching the water rather than the wave. That might sound like splitting hairs, but the distinction is important. You aren't touching a seismic wave if you touch the ground. You're touching the ground. The ground is shaking. You can feel it shaking, but you aren't touching "the shaking", which is what the wave is. Not necessarily. Take a look at refraction. Who says there's a single interaction point? Electrons have a wave nature too. See for example hyperphysics and electron diffraction.
  2. Here's something I wrote down a while back: Time exists like heat exists, being an emergent property of motion. It's a cumulative measure of motion used in the relative measure of motion compared to the motion of light, and the only motion is through space. So time has no length, time doesn't flow, and we don't travel through it. I used the word motion rather than change, but it's the same general idea. And it isn't something new. Actually it dates back a couple of thousand years, have a google on it. Also check out presentism and A World Without Time: The Forgotten Legacy of Godel and
  3. Questionposter: think of the photon as a wave, then think of a seismic wave. You can't "touch" a seismic wave, but you can feel it. That means you're interacting with it. But a seismic wave isn't some "whole thing" like a billiard ball, it's just a wave. You can interact with it briefly before I pull you up on a rope and get you back into the helicopter. Or you might have placed a little accelerometer on the ground. It has scant effect on the seismic wave. When it comes to photons there's something called "weak measurement" that's a bit like this. See The secret lives of photons revealed, a ph
  4. I think there are some aspects of what you're saying that are right, but that you go too far with certain things and they undermine everything you say. Go and look at A World Without Time: The Forgotten Legacy of Godel and Einstein. Time doesn't slow down, clocks clock up local motion, not "the flow of time". It doesn't matter whether it's a mechanical clock, a quartz clock, or an atomic clock, that's what clocks do. So when a clock slows down, that local motion is occuring at a reduced rate. That's all there is to it. If you travel out and back through space your rate of local motion is
  5. Good stuff. No. The typical picture you see of a "dent" shows space-time, not space. Apply your clock thinking above to a parallel-mirror light clock. When it ticks slower it isn't because there's "a dent in space", but because space is different there. No. Like Swanson said, it's gravitational potential that relates to time dilation. The force of gravity at some location depends upon the local slope of gravitational potential at that location. Time doesn't affect a quartz crystal vibrating. A concentration of energy does. It "conditions the surrounding space". It alters it, and
  6. It was in a previous post of his. Of course it can. But stop nitpicking, Swanson. Go look at the photoelectric effect or something. Apologies. Fixed.
  7. That's back to front. The fields and particles depend on "how the energy is arranged". You used the word configuration yourself. Now test it against low-energy proton-antiproton annihilation to gamma photons. You started with quarks and gluons and the strong force plus electromagnetism, you maybe saw some residual-strong-force pions for a nanosecond, then you finished up with electromagnetic photons. The arrangement of the fields and particles has changed beyond recognition. But energy was conserved. See the second paragraph of this post by Cygnus on the original thread? Now look again at
  8. Something else. I take my cue from A Zeptospace Odyssey: A Journey into the Physics of the LHC by Gian Francesco Giudice. He's a physicist at CERN with a hundred-plus papers to his name. He talks about the Higgs sector on pages 173 through 175. If you don't have this book you can find it on amazon and do a search-inside on "Higgs sector". He starts by saying: “The most inappropriate name ever given to the Higgs boson is 'The God particle'. The name gives the impression that the Higgs boson is the central particle of the Standard Model, governing its structure. But this is very far from the tru
  9. Alexander: see A World Without Time: The Forgotten Legacy of Godel and Einstein along with The Other Meaning of Special Relativity by Robert Close. What you're proposing here doesn't sound all that different to special relativity to me. You put the emphasis on motion rather than time, but I'm confident Einstein would be happy with that if he was still around. NB: I'm afraid you're wrong about relativistic dilation time, which today has not been experimentally proved.
  10. You will arrive at a situation where you have no discernible photon energy left. The wavelength reduces further and further until it's no longer measurable. You don't, Swanson. You might think you do, but the mathematical physics you think of as standard pays insufficient regard to experimental physics, and rather glosses over E=mc² wherein Einstein said "All matter is made of energy". Pair production is the experimental evidence that supports this. The important point to appreciate is that you can employ a photon to make electrons move, and you can also employ a photon to actually make an
  11. ajb: a "property of the configuration" is reasonable, but that just defers the question to configuration of what? I think a useful phenomena to examine here is Compton Scattering. This is from the hyperphysics website, which I think is very good: The photon gives the target electron a "kick", and is reduced in energy. The electron acquires kinetic energy and moves. If you then repeat this with the scattered photon, you tend towards a situation where you have no photon left. All you have instead is electrons that weren't moving and now are. The photon has essentially been converte
  12. Farsight

    Energy

    questionposter: energy is a physical thing, something very real, but it isn't something tangible. I suppose a photon is pretty much "pure energy", but you can't hold a light beam in the palm of your hand. And yet we can make matter out of photons. Check out pair production and the inverse process, annihilation: (From http://outreach.atnf.csiro.au/education/senior/cosmicengine/bigbang.html) You're made out of matter, so you're made out of energy. And then it is tangible. The important thing is this: you aren't made out of anything else. And you can't create or destroy energy, it's tr
  13. I'm afraid the graviton as generally presented is a myth. It's one of those hypothetical things which have been advocated in certain quarters for decades, for which there is no evidence whatsover. Ahhhh, some will say, but you can't prove it doesn't exist. To which you should shrug and say you can't prove that fairies don't exist either. The graviton is put up as the equivalent of the photon, as something that makes gravity "work", and that's a myth too. Because photons don't make electromagnetism work. Some people will claim that virtual photons make electromagnetism work, but look close
  14. No. If the force you felt were due to the other objects in the universe, these forces would have to result from instantaneous action at a distance. That's magic. It doesn't work like that. No. No, it wouldn't simply appear as if the ball was spinning around you. You'd feel your own rotation, and you'd feel dizzy. And no, the ball wouldn't be pulled in toward you. No. Again that demands instantaneous action at a distance. i An "absolute" frame of reference like the CMBR just gives you a way of determining your motion through the universe, which is as absolute as it things can g
  15. It's an electromagnetic wave Swanson. There is no charged particle present. But the field varies, so there is a current. It isn't conduction current. It's a displacement current.
  16. Because I'm talking about an electromagnetic wave here. See this alternative picture. Forget about the magnetic field variation because it's an electromagnetic field variation, and consider one wavelength starting from the origin rather than the peak: Thanks for your feedback. I'm scratching my head about them. I don't actually understand what the potentials are. The wiki page on four-potential defines it as: [math]A^{\alpha} = \left(\frac{\phi}{c}, \mathbf A \right) \qquad \left(A^{\alpha} = ( \phi, \mathbf A)\right)[/math] ..in which "φ is the electrical potential, and
  17. The reason I'm asking is related to the Aharonov-Bohm effect and electromagnetic four-potential. And it's related to the OP, particularly since Widdekind has been talking about this elsewhere. Take a look at http://www.chem.yale.edu/~chem125/125/xray/diffract.html and this depiction of an electromagnetic wave: Look at one complete wavelength, starting from the left. There's an electromagnetic field variation here, but no charged particle present. So there has to be some sort of current, and it isn't conduction current. So surely it's displacement current? Orthogonal to the propagation
  18. Hi Widdekind, Bob. Can either of you explain the difference between A and V?
  19. No. I'm countering the position you did put forth, that you are traveling forward [in time] at one second per second. You aren't , because you aren't travelling in time at all. It's just a figure of speech. The science-fictional stasis box and film frames and the freezer hopefully make this clear, and hopefully make it clear that time travel is science fiction too.
  20. There's no issue with the SR time dilation equation, IME, or with the experimental proof. Time dilation is very real. But "the passage of time" is another figure of speech. Time doesn't actually "pass" in the sense that time literally moves or we literally move through it. Things move through space, and we use this to derive the time dimension. But it's a dimension of measure rather than one that offers freedom of movement. Yes, the macroscopic motion that your wristwatch experienced while travelling through space caused it to run a tiny bit slower. The reading on the face is reduced, and we s
  21. It's a figure of speech swanson. You aren't really "travelling" into the future at one second per second. All: Hold your hands up. See that gap between them? That's a space, and you can see it’s there. Now waggle those hands. That's motion, and you can see that’s there too. But can you see time? No. Can you see time flowing? No. Can you see any travelling through time? No. There’s no actual scientific evidence for time flowing or time travel. Time travel is science fiction, and it’s going to stay that way forever because travelling back in time is impossible. Not because wormholes are tri
  22. There is no magical mystical action-at-a-distance. Even Newton knew that over three hundred years ago. In a letter to Richard Bentley on 25 February 1692, he said: “That gravity should be innate, inherent, and essential to matter, so that one body may act upon another at a distance through a vacuum, without the mediation of anything else, by and through which their action and force may be conveyed from one to another, is to me so great an absurdity that I believe no man who has in philosophical matters a competent faculty of thinking can ever fall into it”. Once you remove action-at-a
  23. IMHO it looks something like a "spindizzy" would look like. See http://en.wikipedia.org/wiki/Spindizzy. Years back before I got into physics, I wrote a science fiction story called Spindizzy featuring a flying car with washing machines for wheels. But it's just science fiction. I don't know of any explanation/theory on the web, and I don't know how it could possibly not fall down. Besides, I've got an electric gyroscope, and once it's spinning at full speed it's extremely difficult to rotate it in an orthogonal direction. As far as I know, to make an object not fall down, you need to be able t
  24. We should talk about time properly Swanson, and what clocks actually measure. Neutrinos have nothing to do with temperature. But some people claim that they can influence decay rates. I'll ask around and see if anybody has conducted any tests, say at ArgoNeuT.
  25. A pleasure, abhilash. When it comes to relativity, do bear in mind Minkowski’s Space and Time , and look at what he said about two pages from the end: "Then in the description of the field produced by the electron we see that the separation of the field into electric and magnetic force is a relative one with regard to the underlying time axis; the most perspicious way of describing the two forces together is on a certain analogy with the wrench in mechanics, though the analogy is not complete". This is echoed in Maxwell's On Physical Lines of Force where he said: "A motion of trans
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