optical appliance meaning in Hindi

"Devices of Wonder : From the World in a Box to Images on a Screen, " which runs through Feb . 3, explores the intricate links between modern media machines _ Internet portals, joy-stick-driven video games, IMAX movie screens _ and the long line of mesmerizing optical appliances that paved their way : mirrors, pinhole images, magic lanterns, flip-books, peep-show boxes, panorama theaters and the phantasmagoric wonder chambers that contained them all.