Penrose Unilluminable Room is a room with mirrored walls that can't be fully illuminated by a single point source of light

cfabbro
2022-05-19T15:46:44Z

Link URL: https://www.youtube.com/watch?v=x3VluzZTReE

Comments URL: https://tildes.net/~science/11cu/penrose_unilluminable_room_is_a_room_with_mirrored_walls_that_cant_be_fully_illuminated_by_a_single

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