Photon?

Discussion in 'Physics & Math' started by Fredrik, Jan 2, 2015.

  1. quantum_wave Contemplating the "as yet" unknown Valued Senior Member

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    Except that it is easy to get the easy stuff completely wrong, in the case of the CMB. Part of your due dilligence in getting it right should include having a reasonable and responsible scenario that the easy things should work with. The current description of a universe that is homogeneous and isotropic works better as you increase the scale. One big bang seems like the large scale view to someone looking at our Hubble view, and then connecting everything in it and everything still out of sight from it to one singularity. The singularity says the Big Bang stands alone; doesn't need or even accept the possibility of before and beyond. I seems that it would be really easy to get your cosmology of the universe wrong. All you need is for there to be preconditions, like a greater universe composed of a landscape of big bang type events. How would that change the nature and source of the CMB? Wouldn't some hemispherical asymmetry in the CMB then have some new explanations? And would dark energy possibly have something to do with the accelarating expansion of one high energy density big bang arena, as its density equalizes with the supposed surrounding lower energy density space?
     
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  3. Farsight Valued Senior Member

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    The "easy stuff" was my little joke. There's a hyperlink on it. Hover your cursor over it and click.

    As regards dark energy, I did a little article on it a year or so back. See this.
     
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  5. PhysBang Valued Senior Member

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    So you put all your standard spam on a blog so that you can spam more easily?

    That page raises (and avoids) all the same questions people have always asked you. E.g., where is a single equation that justifies any of the behavior you list on the page?
     
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  7. quantum_wave Contemplating the "as yet" unknown Valued Senior Member

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    I completely missed that link, and therefore the humor went over my head, lol. The link to the "easy stuff" has been like an on-line mentor to me over the years. Students in physics and cosmology probably get introduced to the problems on the first day of class, but might not get much of a chance to speculate about the solutions until they have the basics of what science does know under their belts. Eventually, I think science enthusiasts get to the problems list, and form their own ideas as to solutions. People aren't often willing to talk though.

    You and I are far apart on our views, and yet in your article on dark energy I can see we could have some common ground, and at the same time there are some important aspects of nature that I disagree with you on.

    For example, re. dark energy, we agree that your lead lined room is filled with energy. And we agree that it isn't virtual particles popping in and out of existence that is providing the energy. The energy probably is related to what you call the gravitational field, though we apparently don't agree about the source of the energy, the nature or mechanics of the waves, and the exact nature of the field. But the point about dark energy is that it is the as-yet unknown source of the acceleration of expansion, and so the cause is not quite as simple as your article makes it sound. My solution is way more elegant, lol.
     
  8. QuarkHead Remedial Math Student Valued Senior Member

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    And worse- it is merely a list of prejudiced assertions without any argument of any sort. This from an "IT guy trained in cold, hard logic"

    The irony that may be lost on speakers of non-UK English is that Farsight's hosting site is called "Bogpaper". In colloquial UK English this refers to that roll of tissue that hangs within easy reach of the WC. Whose express purpose is to.....(use your imagination)
     
  9. Farsight Valued Senior Member

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    You should pick one of the problems and start a thread. When you ferret down the sofa of your wide physics reading it's amazing what you come up with, and it's amazing how these problems just melt away.

    Meh. They're being constantly told about the mystery of this and the mystery of that by people who use it to try to justify what they're doing. These people are none too keen on anybody who dares to suggest that there might not be any mystery after all.

    Often because it attracts opprobrium from "not invented here" naysayers whose physics knowledge is scant. You know the type. The sort of person who doesn't know the difference between space and spacetime, and is a seething mess of bristling resentment.

    And it's good to talk. If we all agreed about everything, whatever would we talk about?

    LOL, we'll have to agree to differ on that.
     

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