Regarding artificial sunlight: a technology that imitates it shockingly well in many ways, giving a sense of a window to a light source with infinite distance: https://www.coelux.com/en/about-us/index
Regarding artificial sunlight: a technology that imitates it shockingly well in many ways, giving a sense of a window to a light source with infinite distance: https://www.coelux.com/en/about-us/index