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As if one ATM idea wasn't enough, I thought I throw out another idea to get some feedback.
While photons are THOUGHT to be "massless", they somehow carry momentum and we euphamistically refer to this ability to carry momentum as "effective mass". We also talk about SPIN as it relates to presumably "massless" particles. It seems to me that a very simple way to explain something as exotic as "dark matter" is to simply view photons as carriers of mass that interact with other forms of mass. It also gives us a meaningful way to explain "light" in terms of moving particles of mass. Any thoughts about this idea? |
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http://www.jhu.edu/news/home05/dec05/darkmatt.html
This was the article that caught my eye today. I find it odd that we can map suomething that exists but doesn't emit photons yet somehow affects them. ![]() |
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Hi Michael
I thought about photons as Dark Energy too. In my idea of Rotating Universe the energy is supplied from outside and if our visible Universe has flat geometry (near critical density) the most energy move around our Universe. We see only redshifted photons (CMBR) because this energetic layer flies from us with speed close to light. For an outside observer it moves very slowly (almost stays) like a distant Black Hole but for us inside this is like flying Event Horizon. This energy (photons ) cover the rest mass of galaxies. The photons are collision-less but they are attracted gravitationally. I suppose the photons are denser near galaxy cluster (it is a huge mass) and might be a part of a Dark Matter. The whole Dark Matter is a complex problem. There is to little photons for the whole Dark Matter – we observe ratio mass/light =~760 in our vicinity. May be there are locally more photons, any way every particle interacting gravitationally has its energy. Dark Matter clumps will cause a gravitational wave in our Solar System if it moves in Milky Way and we would surely observe it. IMHO the Dark Matter are MACHOs interacting gravitationally with galaxy bulge and specific structure of layers and strings of the stars and clouds interacting via gravity and EM with each other. |
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We do? I've never heard a physicist refer to the momentum of a photon in those terms. E^2 = p^2c^2 + m^2c^4 for a photon, having zero mass, this means that p = E/c. This works quite well for calculating conservation of momentum for radiation pressure in e.g. laser cooling applications.
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"I have a cunning plan that cannot fail." S. Baldrick |
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I seem to remember that some studies (from Nova, and i think I read something like this on a few Nasa sites) about light had revealed that light did have a finitley small amount of mass in the particle pair. And that the suposition for it's appearent 0 mass qualities is that the particle pairings of a photon are a positive mass particle and a negative mass particle, giving it a net mass of 0.
Is this still current?
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There is no problem that cannot be solved by a suitable application of high explosives - US Army Demolitions School I just saw Hayley's comet, she waved, Said "why you always running in place? Even the man in the moon disappeared, Somewhere in the stratosphere" - Shinedown http://worldsofothersuns.home.comcast.net/ |
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Oh, and can you provide us with something more than a personal feeling of 'oddness' - specifically, some match between your idea (post #1) and good observational results? |
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Please show that your idea about photons is consistent with good observational and experimental results. You may start with the 'two slit' experiment, if you choose. |
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The first thing to understand that that I believe that individual photons are nothing more than oppositely spinning and oppositely charged particles that orbit around one another as they propogate through space time. They circle one another as they propogate through space time, creating a double helix like shape as they travel and orbit each other. More commonly however, photons travel in PACKS or WAVES as in subatomic Bose Einstein Condensates. Only now are we beginning to have the ability to emit and recieve individual photons, but in doing so, we disturb the pair even by measuring it. Ultimimately I firmly believe that all of this movement on the quantum level can be explained in good old 19th century physics combined with an understanding of QM. If you believe I have violated some aspect of QM or simple physics, by all means be specific and I will try to address your questions. First however we need to make sure we're both on the same "wavelength" about the basic ideas I am trying to convey. Keep in mind also that photons do exert pressure on things they run into. They carry momentum and therefore they carry mass. It's just we can really only see as small as a single photon, and we cannot yet "see" how it behaves as both particle and wave. I think you'll find this explanation fits very well into QM and good ol' 19th century physics. Last edited by Michael Mozina; 14-December-2005 at 01:07 AM.. Reason: Changed the word "destroy" to "disturb" |
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The first way this idea is consistent with observed behavior is that it explains how an individual photon can behave as both a particle and a wave. It is actually made of two particles and the pair orbit one another as they propagate through space time, creating a double helix like structure if you looked at the pair in 3D as it moved through space/time. The two slit experiment typically involves "burst" or packages of waves. These bursts are themselves "waves" of individually charged particles that all orbit in a quantum packet. The fact there is interference shows that these are waves, much like subatomic Bose Einstein Condensates. As thy propogate through space time, they collide with things and pass their momentum into various atoms. |
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2) If it may be meaningful 'to explain "light" in terms of moving particles of mass', as a way of addressing 'something as exotic as "dark matter"', then a simple check on the idea might be something like 'where is the biggest concentration of DM?' Per your idea, it should be in a place where there is an extremely high density of photons, and, conversely, you would expect a place with a very low density of photons to have very little 'DM'. 3) 'a number of complexities here as to how surfaces give off WAVES of energy, not single photons' - what does this mean? Specifically, please explain how this jives with QM. Quote:
Without the math, you have no theory (it's merely an idea). Quote:
New question: please explain why photons are not deflected in a magnetic field (if, as you say, they comprise "oppositely spinning and oppositely charged particles"). You may use classical electromagnetism, or quantum theory (you choose). Quote:
Please explain the observed results from double slit experiments performed so that the pattern on the screen is built up one photon at a time (and so there is never more than one photon in the whole apparatus at a time). Quote:
Please provide a 'good old 19th century physics' solution to the EPR paradox. Quote:
However, my attack on your idea isn't so much about your misunderstanding of basic physics, it's a set of questions about the consistency between your idea and the results of a very great number of very good experiments. Quote:
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The photon behaves just as it's described in QM; 'wave' and 'particle' are concepts which don't apply in QM. You may not like it that a theory which incorporates so much counter-intuitive stuff is so successful (= is consistent with good experimental results), but unless and until you can provide an alternative that is equally successful, .... |
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However, the experiment can be done in such a way that there is only one photon in the apparatus at a time. This, I'm sure you'll agree, provides a pretty good test of your 'burst' idea. The result of these 'low intensity' experiments is unambiguous - you get the same results as when the apparatus is flooded with photons. Quote:
Since you have introduced the concept of photons as '"waves" of individually charged particles that all orbit in a quantum packet', please write down the wave equation for these things, showing how they 'orbit'. |
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We have more and more observations that photons are wavy rotating deformations of the space. Last experiments in CERN with highest energies indicate that the most concentrate particles and energy create a perfect fluid almost without a viscosity. In such a state everything is maximal packed in a minimal Planck length .
The time-space is not perfect – it transfers an energy with limited speed of light. If it would be perfect the speed of light would be unlimited fast and the information would be everywhere immediately. The limited speed of light (Information) makes a possibility to create different particles with rest of mass, inertia and gravity. There would be no time if the information could move with unlimited speed. |
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The laboratory work shows the conditions close after a Big Bang – very dense and energetic plasma like superfluid almost without viscosity. I can’t now find quickly a link. I suppose that if the very dense and energetic plasma become a nearly perfect fluid it will shows a property of the time-space it self. Why a matter in such a density have to change its property?
I have just a question what it would be if light (information) may move infinitely fast. |
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Last edited by Michael Mozina; 14-December-2005 at 09:13 PM.. Reason: Spelling |
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Let's talk about some basics here for a moment. What exactly is a photon? What makes it "real"? Describe it somehow. How does a photon carry momentum from one place to another in the absense of mass? How does a photon behave as both a particle and wave? Quote:
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Here is the basic movement of the particles from a mathematical perspetive.
http://www.answers.com/topic/helix IMO, each pair of particles inside the photon travels in a helix shape as it moves through space/time. Keep in mind that it may even be that the perception of these two "particles" may in fact be a misconconception. Each of these items may be made of even smaller particle pairs or configurations of smaller particles. I wouldn't necessarily assume in other words that either of these two "particles" inside the photon is the smallest possible unit of matter. |
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How does the 'photon behave as both a particle and wave', in your idea? Please be sure to demonstrate the particle and wave behaviour mathematically. Quote:
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Please provide a reference, preferably a standard QM text, which explains this (QM) concept in more detail. Quote:
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However, if the earlier parts of your post are meant to represent standard QM, then I think we will need to get to some basic math rather soon. Quote:
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People will attack your arguments with glee and fervor here; that's what science and scientists do. If you cannot handle that sort of attack, then maybe you need to rethink your theory, too. Remember: you came here. It's our job to attack new theories. Those that are strong will survive, and may become part of mainstream science. Additionally, keep promotion of your theories and ideas to only those Against the Mainstream threads which discuss them. Hijacking other discussions to draw attention to your ideas will not be allowed. If it appears that you are using circular reasoning, depending on long-debunked arguments, or breaking any of these other rules, you will receive one warning, and if that warning goes unheeded, you will be banned." Quote:
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IMO a photon is simply composed of two oppositely charged/spinning particles that orbit around one another. They have no "rest" mass because they are never truely at "rest", not inside the atom, nor while the pair it traverses space as a photon. All the other math concepts related to QM would necessarily need to apply. This is simply a mechanical description of what a photon is, and what makes it "real". Like I said, QM is a little vague about what makes a photon real, and how it travels as both particle and wave. I can do this with a simple machanical model of real mass and real energy. It just so happens that this would fit the bill for "dark energy", which is IMO misnamed. It should be called "light energy" or "light matter" IMO. Quote:
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For those interested, there's another thread in the General Science section which discusses QM, Two-slit and Wave Collapse.
In it, Grey has given us a link to a particularly interesting version of the two-slit experiment, which highlights some of the weirder aspects of QM. Any ATM ideas about photons etc need to show consistency with these experimental results. Enjoy! ![]() |
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I see absolutely no purpose in using a laser for this purpose. I think this experiment is mostly likely releasing a short "burst" or a short "stream" of photons. That stream can interact, but the wave behaviors would be caused by the presense of multiple photons in the stream. |
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Here is a version that's done as a classroom demo, complete with a movie (though that takes a really long time to download). And here's an experimental setup designed for students to do themselves. So is your only argument here that all the physicists who have performed this kind of experiment are either incompetent or lying, or do you have an explanation for the interference that is seen when sending only a single photon through at a time? |
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Now it "may" be possible to build a device to emit ONE atom in a Bose-Einstein Condensate, but then it wouldn't be a "condensate" in the first place, even if we did that. I'm just not convinced we have that kind of precision at the moment, especially not at the subatomic level at either the transmitter end, or the receiver technology. In "theory" if we have only "one" (mechanical) photon, it cannot interfere with itself. I am more likely to interpret this interference pattern as evidence of a "burst" of photons from the transmitter as a wave, rather than a singular photon release. I know they are experimenting with quantum cryptography right now. That is the kind of precision it would take at both ends (transmitter and receiver) to ensure we are talking about a single photon rather than a burst or a "condensate" of photons. |
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In what way is it 'typical' for photons to travel as 'BEC waves'? What is the composition of a 'photon pack'? In which ('atypical') cases do photons not so travel? Please show how your 'typically, photons travel in packs, as BEC waves' idea is consistent with photoemission experiments (of the kind which got Einstein his 1921 Nobel prize) Quote:
Once you've done this research, please come back and show us that such precision is not possible. For avoidance of doubt, we are discussing photons (not atoms in a BEC). Quote:
Now, please explain how the interference pattern is created, when at any one time there is only one photon in the apparatus. Or, since you may be claiming that there is more than one, always, please describe the flaws in the setup, that allowed there to be more than one at a time. Be sure to address the actual experiments, not your interpretation of them. You may wish to review the experiments on photoemission, as background. Quote:
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Everyone is entitled to his own opinion, but not his own facts. |
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