What is a pariscoope?

Answer 1

A periscope is an optical device typically used in submarines and other applications where direct line-of-sight observation is obstructed. It consists of a tube with mirrors or prisms at each end, allowing a user to see objects that are out of direct view. By reflecting light through the mirrors, the periscope enables observation from a concealed or protected position. This design is particularly useful for surveillance and navigation.