I think your math on the energy is wrong / incomplete. The energy hitting a person isn’t the same as the energy emitted from the source, and it falls off drastically with distance. So you can’t just divide wattage at the source by room area.
Also, the area being reached depends significantly on room geometry—meaning that it’s not easy to have a single lamp cover a room, especially the type of large, high occupancy room which is most likely to lead to large exposure events.
I think your math on the energy is wrong / incomplete. The energy hitting a person isn’t the same as the energy emitted from the source, and it falls off drastically with distance. So you can’t just divide wattage at the source by room area.
Also, the area being reached depends significantly on room geometry—meaning that it’s not easy to have a single lamp cover a room, especially the type of large, high occupancy room which is most likely to lead to large exposure events.