Ask Lemmy

Well, it depends on the frequency range you're talking about. In common usage, "radiation" often means something like ionizing radiation, but technically, UV light is a frequency of electromagnetic radiation.

https://en.wikipedia.org/wiki/Electromagnetic_radiation

In physics, electromagnetic radiation (EMR) or electromagnetic wave (EMW) is a self-propagating wave of the electromagnetic field that carries momentum and radiant energy through space.[1][2] It encompasses a broad spectrum, classified by frequency (inversely proportional to wavelength), ranging from radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, to gamma rays.[3][4]

And if you include the ultraviolet frequency range, we did it decades ago:

https://www.dailymail.co.uk/sciencetech/article-1080042/Meet-Mr-Green-Genes--worlds-glow-dark-cat.html

Meet Mr Green Genes - the world's first glow-in-the-dark cat

His eyes glow ghoulishly in the right light, just like any other cat's - but so do his nostrils, gums and tongue.

Mr Green Genes of New Orleans in the U.S. is the country's first 'glow in the dark' ginger tom.

In daylight he looks normal, but put him in a darkened room and switch on an ultraviolet light, and his face will beam out a bright green.