What would the properties of an infinitely long wavelength of light be? And what about a wavelength of light that is infinitely short? What would that look like?
edit: light as in electromagnetic waves, not visible light. Sorry if it was not very clear
How would you create the infinite wavelength? Would you redshift a light source for eternity? Would you have to move it at the speed of light?
Infinities are generally outside of practical applications, so you wouldn’t. It’s more of a thought experiment.