`periscope` Related Article Results

A periscope is an optical instrument used to observe the environment from behind obstacles or underwater. In a periscope, flat mirrors or prisms are placed at each end at a 45 degree angle inside a tube. This arrangement redirects light, allowing the user to observe an area that is not directly visible. In some advanced periscopes, lenses are also used to magnify the image. Generated by artificial intelligence History The first prototype of the periscope was developed in 1854 by French chemist H