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Why only light has photons while x-ray or micro/radio waves don't?

If we build a device that can iterate over all frequencies, what will be so special about the light range that it will start to generate photons while in all other ranges no photons will be made?

Are there special 0 mass particles for x-rays and radio waves or do they also generate photons? (the latter is highly unlikely since radio doesn't travel in a straight line)

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  • $\begingroup$ Why do you think that only visible light is made of photons? $\endgroup$
    – Nemo
    Commented Jun 30, 2018 at 9:39
  • $\begingroup$ What makes you think that? $\endgroup$
    – QuirkyTurtle98
    Commented Jun 30, 2018 at 9:39
  • $\begingroup$ I didn't say it's made of photons, it's a wave and a particle but other parts of the spectrum aren't, why? @AndreiGeanta $\endgroup$
    – shinzou
    Commented Jun 30, 2018 at 9:43
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    $\begingroup$ All EM radiation has photons. There is nothing unique about light in this respect. $\endgroup$
    – John Rennie
    Commented Jun 30, 2018 at 9:44
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    $\begingroup$ @shinzou all EM waves travel in straight lines except when they are diffracted. Diffraction increases with wavelength so radio waves diffract more then X-rays. For more on this see Why does wavelength affect diffraction? $\endgroup$
    – John Rennie
    Commented Jun 30, 2018 at 9:50

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Light and all electromagnetic frequencies emerge from a superposition of photons, the underlying quantum mechanical state of electrodynamics, QED.

Are there special 0 mass particles for x-rays and radio waves

They are photons of mass zero and energy = to $h*ν$, where $ν$ is the frequency of the wave and $h$ is the Planck constant

or do they also generate photons? (the latter is highly unlikely since radio doesn't travel in a straight line)

They are composed out of zillions of photons, all frequencies of electromagnetic radiation.

It is the classical electromagnetic wave that is deflected easily by obstacles. This means radio frequency photons will have time dependent build ups of superposition to the classical radio wave, but the mathematics is there and it is photons all the way to zero frequency.

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