What exactly is the benefit to the idea that photons exist?

What exactly is the benefit to the idea that photons exist? Is there something missing if we just purely consider light a wave and never a particle? We don't seem to have any problem considering radio waves purely waves; there's no apparent need to invent a "radion" to call radio signals particles the way we do with photons and light. So what's the reason? Why is light so special that it can't just be a wave?

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  1. 2 weeks ago
    Anonymous

    >photons exist
    I'm not so sure about that

  2. 2 weeks ago
    Anonymous

    Look up quantization and the Ultraviolet Catastrophe.

    • 2 weeks ago
      Anonymous

      >i have no idea what i'm talking about thats why i can't explain or specify anything

  3. 2 weeks ago
    Anonymous

    How do you explain the Photoelectric effect then? Think of a solar panel - low frequency light, like radio waves, will never impart any electric energy, no matter how much you shine on the panel. But just a small amount of visible or uv will immediately provide power

    • 2 weeks ago
      Anonymous

      >low frequency light, like radio waves, will never impart any electric energy
      Don't you find it interesting that radio waves are "low frequency LIGHT" yet they are not associated with photons the way light within the visible spectrum is? If visible light is made of photons, why is invisible light not made of photons?

      • 2 weeks ago
        Anonymous

        But they are? Radio waves are considered photonic, but not as strongly.
        That's kinda the center of the whole duality - the longer the wavelength, the more wave-like it is. The shorter the wavelength, the more particle like. But even high energy gamma rays are still waves, and low energy radio light can still observed as a particle.
        I know there's been results done with infrared photons; I admit I don't know if anythings been at as low an energy as radio

        • 2 weeks ago
          Anonymous

          Okay, but what's the benefit to creating this nonsensical duality instead of just ascribing different properties to different wavelengths? What is the benefit to saying light is a particle because of the photoelectric effect over just saying light waves of certain wavelengths have a photoelectric effect?

          • 2 weeks ago
            Anonymous

            As technology improves, photoelectrics for bigger and bigger wavelengths can be detected; it isn't static, just the limit of current technology. Also there's been diffraction detected for all kinds of higher energy photons, so it's necessary that direction as well.

          • 2 weeks ago
            Anonymous

            >As technology improves, photoelectrics for bigger and bigger wavelengths can be detected
            All the more reason to consider it a property of waves, no?
            >there's been diffraction detected for all kinds of higher energy photons
            Photons only exist as a concept to explain waves "acting like particles," which seems like an unnecessary complication.

          • 2 weeks ago
            Anonymous

            >Consider it a property of waves
            How? The whole shebang about waves is their elongation; they aren't localized at all. Soundwaves don't do it at all. Waves are a mathematical tool that was found to be applicable to light; a propagating disturbance through a medium. A big adaptation was already done by dropping the medium (turns out you can treat the vacuum as a pseudo-medium and it works fine). How do you make it accept all the particle-like behavior without changing what it is?

          • 2 weeks ago
            Anonymous

            >Soundwaves don't do it at all.
            They do, though. Sound waves are just extremely less energetic than light waves.

          • 2 weeks ago
            Anonymous

            Actually more energetic since you're moving heavier masses, just converting/transferring that energy leads to greater losses than just straight em to em transmission, if it required less energy to move larger masses than photons then sound should travel faster than light, the wave propagation speed is directly tied to the mass of the oscillating field and field density

      • 2 weeks ago
        Anonymous

        All "light" is just an oscillation of the EM/photon field

        • 2 weeks ago
          Anonymous

          >all <insert particle phenomenon> is just an oscillation of it's corresponding field

          very helpful, I can see behind the matrix now

          • 2 weeks ago
            Anonymous

            Just specifying that there is no difference visible and invisible light, all electromagnetic phenomena are the same thing and oscillations of the same photonic field, you can use the wave demonstration I posted to visualize what an x-ray vs a radiowave looks like

    • 2 weeks ago
      Anonymous

      Explain why you can't hear 10Hz, but 5kHz of the same intensity can be so loud that it hurts.

  4. 2 weeks ago
    Anonymous

    >Colors are related to wavele-
    Stop right there.

    • 2 weeks ago
      Anonymous

      All waves act singular, so yes, magenta has its own wavelength

  5. 2 weeks ago
    Anonymous

    >We don't seem to have any problem considering radio waves purely waves

    now u have me thinking they may be particles too

  6. 2 weeks ago
    Anonymous

    >The absolute state of IQfy

  7. 2 weeks ago
    Anonymous

    >What exactly is the benefit to the idea
    The value of the theory is its predictive power, which allows us to build cool stuff, go places and have jobs.

    • 2 weeks ago
      Anonymous

      Also, I look forward to future generations of space telescope that can see so far into the "infrared" that they can image galaxies way beyond the current limit of the observable universe, whose visible photons have been stretched into radio particles.

  8. 2 weeks ago
    Anonymous

    There's no benefit. The existence of photons is just a fact. In fact, its discovery was one of the greatest upsets in scientific history.

    The debate on what light is goes back centuries. In the 1800's the double slit experiment showed that light behaved as a wave. And by the end of the 1800's, Maxwell and Hertz proved that it was a wave of electromagnetic force. People thought they finally understood light. There were still a few questions, like if waves on the ocean is a wave of pressure through water, and sound waves are a wave of pressure through air, then what substance is a light wave travelling through? They thought there must be some sort of light aether or something, but they were confident we could prove that one day.

    But a major issue arised with the ultraviolet catastrophe. If light waves were smooth, continuous transfers of energy, then the hotter things in the universe should be radiating near infinite energy, which obviously wasn't happening. The way things were radiating energy made no sense according to the classical theories. Max Planck put forth a solution where energy was being transfered in discrete units, or "quanta", and even calculated what the size the quanta would have to be to "fix" the equation. But that was considered a desperate act to try explain away the UV catastrophe.

    It wasn't until the discovery of the photoelectric effect that it became obvious that all the energy in the universe was being exchanged in quanta across space, like a particle. There was no electromagnetic aether. The "wave" was just a series of particle like exchanges that were happening in very strange, specific ways that made the whole system only seem like a wave. We had to scrap classical physics and come up with a new "quantum" physics to explain energy.
    The number in Planck's equation wasn't just part of a desperate fix, it was a fundamental constant encoded into the universe. We call it Planck's constant now.

    • 2 weeks ago
      Anonymous

      >assume light are quanta
      >oh look math based on this shows it is quanta
      >oh look quanta is just shiny particle
      every time.

  9. 2 weeks ago
    Anonymous

    Im going to stick a laser in your ass so that your body get overloaded with photons

  10. 2 weeks ago
    Anonymous

    >Eddington solar eclipse 1919

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