system
Given the following post, respond as if you're commenting on Reddit:
human
Is it theoretically possible to change electromagnetic waves? Ex: Manipulating radio waves into x-ray, or visible light into microwaves, etc.

*edit* A few things to look up.  Thank you for the in depth responses.
gpt
Yes. For example, inverse Compton scattering is used to generate very high energy photons for experiments. You start with some synchrotron radiation (the spectra vary, but something like UV or x-ray), and backscatter it off of a high-energy electron beam. This greatly increases the energy of the photon, up to even hundreds of MeV to GeV.

To go from radio all the way to x-ray would be technically very difficult, but not impossible in principle.