ok, assume I understand the Huygens whatever (will have to find a video about that). How does it apply to a dot light source? There's a whole circular reflection, but only a single reflection, if you know what I mean. Is it a matter of just taking the limit to a 0 with image?
It's been a long time since I could do it myself, mostly because of lack of time and of exercise. Maybe I should create a patreon account, send some money to Angela, and ask for a video :)
