Nothing has ever travelled at the speed of light especially light

Discussion in 'Science and Technology' started by Vanilla Gorilla, Oct 27, 2018.

  1. Mountain Valley Wolf

    Mountain Valley Wolf Senior Member

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    That is very interesting Vanilla Gorilla. I wanted to play with that concept for a bit.

    But then I realized that maybe the real problem is that we don't know exactly what value the speed of light is.

    Einstein's math determined that the speed of light was the speed of time. Light is the one thing that moves at the speed of time, because no matter how hard you try, you cannot see or experience the light that is coming to you--you can only see or experience the light of that moment. Consider, for example, that it takes light about 8 minutes to travel from the sun to earth. We can argue that halfway between the sun and the earth is sunlight making its way to the earth. If there was any other object half way between the sun and the earth, making its way to the earth, we could detect it. But there is no way to detect that sunlight making its way here. In order to do this we would need a device that moves faster than the speed of light. Otherwise, you would have to wait the roughly 4 minutes for it to complete its journey to earth to detect it, but then it is no longer half way between the earth and sun.

    Therefore light does move at the speed of light. Light moves with time at the speed of light.

    However, and this is where you might still be right, as I said in my last post, perhaps 'nothing actually moves,' it simply collapses into physicality. Consider, for example, you are standing in a long flat field, and you see a car half a mile away coming towards you. If it is moving at about 30 miles an hour, you know that in about 2 minutes it will reach you. But just as you cannot see light approaching you, you also cannot see the future. You cannot currently see the car as it has reached you, not even momentarily to see what it will look like when it has reached you. You can only imagine that. Otherwise you will have to wait the 2 minutes for it to arrive. In the present moment, everything that is that car (and all the rest of reality as it exists in that moment all around you) is collapsing in the space-time positions as you experience that reality. 2 minutes later, everything will collapse into the reality you experience in that moment. It is a reality in which the car has arrived at your destination and is next to you. It could very well be that nothing is moving but time. Everything else is merely collapsing into particles.

    You could argue one way or the other on this last point---but the first part explains how light does move at the speed of light.

    (Mic drops)
     
  2. deleted

    deleted Visitor

    I bet this dude traveled faster than light..

    [​IMG]
     
  3. Irminsul

    Irminsul Valkyrie

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    Sound has travelled faster than the speed of light.
     
  4. themnax

    themnax Senior Member

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    "c" isn't actually about light, its the relationship between mass and energy, but it is the fastest you can see light travelling, and thus anything else. i'm not convinced that means nothing can go faster, just that there's no way to observe it doing so if it did. so far there's nothing larger then an atomic nucleus we've been able to push faster then even a tenth of that. the only thing actually certain about it is that the relationship between mass and energy is the relationship between mass and energy.

    for all we know, if you just keep pushing you'd still keep going faster, even with infinite externally observable mass. but until we actually find a way to push anything larger then subatomic, anywhere near the "wall of c", we'll never really know. nor do we know that there aren't or can't be simple work arounds we just haven't discovered yet.

    but it does make a simple explanation why the galactic welcome wagon hasn't beaten a path to our door.
     
  5. Vanilla Gorilla

    Vanilla Gorilla Go Ape

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    So give me the speed of light down to 18 decimal places then. Or just 3 decimal places even.

    Its what this thread is about, I want you all go looking as to why you cant answer that
     
  6. wilsjane

    wilsjane Nutty Professor HipForums Supporter

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    I believe that it is the lack of a true understanding of infinity that is the limit of mans intelligence.
    Perhaps the nearer you get, the closer the day comes when you will end up on the 'funny farm' picking the daffodils off the wallpaper.

    Was your gorilla suit inspired by Stanley Kubrick.?.........Just wondering.!!!!
     
  7. wilsjane

    wilsjane Nutty Professor HipForums Supporter

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    An interesting point is that when a distant star dies, the light reaching earth dies out to a red color before disappearing. This tends to suggest that colors across the visible spectrum travel faster as the frequency increases. If this is true, high frequency radio waves are travelling faster than light.and their speed would vary in line with their frequency. The problem now, is that we have no way of knowing whether refraction is leading us to an incorrect hypothesis
     
    Mountain Valley Wolf likes this.
  8. McFuddy

    McFuddy Visitor

    VGs understanding of science is bullshit 101
     
  9. Vanilla Gorilla

    Vanilla Gorilla Go Ape

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    We are all going to get wiped out before we work out all the important stuff and none of any of this will mean anything
     
  10. Irminsul

    Irminsul Valkyrie

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    Sounds has still travelled faster than the speed of light.
     
  11. McFuddy

    McFuddy Visitor

    Well yeah. It really doesn't mean anything now. Best not to think about it.
     
  12. egger

    egger Member

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    What if photons actually have mass?
    Published July 26, 2013 Astronomy, Physics, and Related Fields ,

    What if photons actually have mass?

    excerpt:

    However, it’s still possible that photons have mass, and therefore (ironically) don’t move at the speed of light. That’s not quite as crazy as it sounds. As you’d expect, though, even a tiny photon mass would have important consequences for theory and experiment. Let’s list a few of them, then consider each in more detail.

    1. While there’s still a special speed, it would no longer be the speed light travels. Technically, that would mean you could travel at the same speed a photon travels, though as a practical matter that would likely be unfeasible.

    2. The electrical force binding atoms together would have a characteristic length scale, determined by the photon mass. Large photon mass means the force acts only over short distances, while a small mass would lead to influences over larger distance. This is what we see with the particles carrying the weak force (memorably known as the W and Z gauge bosons): they have very large masses, and the weak force consequently extends over very short distances. A massless photon, by contrast, leads to an inverse-square law, meaning that the electrical force technically extends to infinity.

    3. Massive photons could be unstable, decaying into other particles. Again, that’s not as crazy as it seems: if the half-life of a photon is large enough, their decays might not be noticeable over the lifetime of the Universe.

    The spoiler (for those who don’t want to read to the end) is that photon mass must be really tiny, and based on our knowledge of radiation from the early Universe that puts a really strong constraint on the photon lifetime: photons can’t decay before about 100 million times the current age of the cosmos.
     
  13. Visexual

    Visexual Member

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    Neutrinos were calculated to have arrived approximately 60.7 nanoseconds (60.7 billionths of a second) sooner than light would have if traversing the same distance in a vacuum. After six months of cross checking, on September 23, 2011, the researchers announced that neutrinos had been observed traveling at faster-than-light speed.
     
  14. egger

    egger Member

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    Once Again, Physicists Debunk Faster-Than-Light Neutrinos
    By Adrian Cho
    Jun. 8, 2012 , 3:39 PM

    https://www.sciencemag.org/news/2012/06/once-again-physicists-debunk-faster-light-neutrinos

    excerpt:

    "The OPERA team had timed neutrinos fired through Earth from the European particle physics laboratory, CERN, near Geneva, Switzerland, and found that they made the 730-kilometer trip to Gran Sasso 60 nanosecond faster than they would traveling at light speed. But in February, the OPERA team also discovered that a loose fiber optic cable had introduced a delay in their timing system that explained the effect. A month later, researchers working with the ICARUS particle detector, also housed in Gran Sasso, measured the speed of neutrinos fired from CERN and found that they travel at light speed, as predicted. By that point, most physicists deemed faster-than-light neutrinos really most sincerely dead. Some OPERA team members thought the whole episode had besmirched the collaboration's reputation, and in March, two of the team's elected leaders lost a vote of no confidence and tendered their resignations.

    Nevertheless, researchers kept at their efforts to test the result. Gran Sasso houses four particle detectors capable of timing neutrinos fired from CERN: OPERA, ICARUS, BOREXINO, and LVD. All four have now found that the neutrino's speed is consistent with the speed of light, as Sergio Bertolucci, research director at CERN, reported at the 25th International Conference on Neutrino Physics and Astrophysics in Kyoto, Japan. The speed of neutrinos was also measured by researchers working with the MINOS experiment, which shoots neutrinos 735 kilometers from Fermi National Accelerator Laboratory (Fermilab) in Batavia, Illinois, to a detector in the Soudan mine in northern Minnesota. The MINOS team has also found that neutrinos travel at light speed, as Fermilab's Phil Adamson reported at the meeting."
     
  15. Vanilla Gorilla

    Vanilla Gorilla Go Ape

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    So whats the margin of error?

    Speed of neutrinos, or what they gauge as the speed if light to however many decimal places

    See if you can find it. You wont

    And this is what Im talking about.

    They just publish to get published

    Unless they have it down to the precision of the planck length, it doesnt prove anything
     
  16. egger

    egger Member

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    A redefinition of SI base units is scheduled to go into effect on May 20, 2019, World Metrology Day. Similar to the redefinition of the meter based on the speed of light that was made in 1983, it will add to the SI four more physical constants of nature that have assigned exact numerical values (elementary electric charge, the Boltzmann constant, Planck's constant, and the Avogadro constant) that will determine the base units ampere, Kelvin, kilogram, and mole. The change was approved unanimously by a delegation.of the General Conference of Weights and Measures representing 59 member states.

    Since 1983, the SI has had three defined constants of nature with assigned exact numerical values: speed of light, luminous efficacy, and the transition between the two hyperfine levels of the ground state of the cesium-133 atom The addition of four more in 2019 will make the SI comprised of seven defined constants that determine the base units. All of the artefacts that were once used to determine base units will no longer be present.(such as the mass of IPK for determining the kilogram and the triple point of water for determining degree Kelvin).
     
  17. egger

    egger Member

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  18. Vanilla Gorilla

    Vanilla Gorilla Go Ape

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    And Planck constant is listed as 6.62607015(89)×10−34 joule-second

    They came up with the value for the Planck constant using the Kibble balance

    Which is dependant on the "accuracy" of the gravitational constant and the Von Klitzing constant both only good for 8,10 decimal places

    "Agree" on number for those values then stick them into the equations for the Kibble balance

    ......and all of a sudden the Planck constant is "exact" to 40 decimal places ???

    Thats all they did, magic baloney sandwiches


    Speed of light is still listed as 299792458 m/s, thats "exact" to no decimal places -> 299792458.00000000000000000000000000000000000000000000000 m/s



    But by all means, someone prove me wrong, change my mind

    You are still going to get people trying to do experiments to better the accuracy of the speed of light past 18 decimal places, still going to get people to do experiments to try work out what the Planck constant actually is
     
  19. tikoo

    tikoo Senior Member

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    I suppose you might have experienced a space vibration , independent of light or sound , but best translated as a
    feeling of sound by a musical mind . Time may be an irrelevant aspect , all locations being equal in the moment .
     
  20. Irminsul

    Irminsul Valkyrie

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    I don't know what that means, but sound creates light, so sound moves faster.
     
    Mike Literous likes this.

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