Define artificial light in your own words?
I don’t know if artificial light is a term I would enjoy defining. Light is everything; all photography is related to and derived from the way in which you use light. Even available light needs to be looked at and ‘artificially stimulated’ from time to time, with the change of an angle, waiting for the right time of day, moving into a shadow, bouncing, diffusing or cutting. In the democracy of photography all light is equally important and similarly treated, even the sources that are reliant on a cord.