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  • The Most Preposterous Feature of the Expanding Universe

    From Pentcho Valev@21:1/5 to All on Mon Apr 17 15:48:06 2023
    "The universe is expanding, and that expansion stretches light traveling through space in a phenomenon known as cosmological redshift." https://www.nasa.gov/feature/goddard/2019/nasa-s-webb-to-explore-galaxies-from-cosmic-dawn-to-present-day

    "As light travels towards us from the distant galaxies, it is stretched over time by the ever expanding space it is travelling through. The longer it travels, the more the wavelengths are increased (reddened)." https://www.wwu.edu/astro101/a101_hubble_
    redshift.shtml

    "Expansion stretches light" is one of the most preposterous cause-effect explanations in the history of science. Why should the expansion of the universe stretch the wavelength of light while failing to stretch anything else? No matter how weakly two
    material entities interact, the distance between them is never stretched by expansion. And this is not only observation. The cosmological theory itself predicts that, wherever material objects interact, expansion is absent. Not that expansion is actual
    but overcome by physical forces, no. Expansion is literally absent:

    Sabine Hossenfelder: "The solution of general relativity that describes the expanding universe is a solution on average; it is good only on very large distances. But the solutions that describe galaxies are different - and just don't expand. It's not
    that galaxies expand unnoticeably, they just don't. The full solution, then, is both stitched together: Expanding space between non-expanding galaxies...It is only somewhere beyond the scales of galaxy clusters that expansion takes over." https://www.
    forbes.com/sites/startswithabang/2017/07/28/most-things-dont-actually-expand-in-an-expanding-universe/

    "Space DOES NOT Expand Everywhere...Is the space inside, say, a galaxy growing but overcome by the gravitational attraction between the stars? The answer is no. Space within any gravitationally bound system is unaffected by the surrounding expansion."
    https://youtu.be/bUHZ2k9DYHY?t=356

    Pentcho Valev https://twitter.com/pentcho_valev

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  • From Pentcho Valev@21:1/5 to All on Tue Apr 18 01:45:59 2023
    Physicists worship Feynman but persistently ignore this statement of his:

    Richard Feynman: "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." QED: The Strange Theory of Light and Matter p. 15 https://www.amazon.com/QED-Strange-Theory-Light-Matter/dp/0691024170

    Whether Feynman is correct is not a matter of discussion here. I am just drawing the attention to a crucial implication. The concept of VARIABLE wavelength of light

    https://www.youtube.com/watch?v=xsVxC_NR64M

    is preposterous if "light is made of particles". That is, the particle model of light implies that the wavelength can only be an invariable proportionality factor in the formula

    (speed of light) = (wavelength)(frequency)

    And the formula says that, if the wavelength is constant, the redshift known as "cosmological" (or "Hubble") is due to the speed of light slowing down as photons travel through vacuum, in a non-expanding universe (the cosmic microwave background, CMB, is,
    accordingly, very very slow, highly redshifted light). This is not a totally new idea:

    "Some physicists, however, suggest that there might be one other cosmic factor that could influence the speed of light: quantum vacuum fluctuation. This theory holds that so-called empty spaces in the Universe aren't actually empty - they're teeming with
    particles that are just constantly changing from existent to non-existent states. Quantum fluctuations, therefore, could slow down the speed of light." https://www.sciencealert.com/how-much-do-we-really-know-about-the-speed-of-light

    Pentcho Valev https://twitter.com/pentcho_valev

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