What Is Light?

We can model light as a wiggle in the electromagnetic field and what happens to light when it hits something can be predicted by solutions to these wave equations. In that sense, we don't really know like what light is but we do have the mathematics to describe it. You could also say that about everything else in the universe, right? All the matter particles, all of the forest particles, they're all just quantum mechanical wave packets,. Yeah, absolutely. We don't know who the subject of that mathematical story is. So if you ask me like, what is light, then boy, that's a whole big philosophical question.