Uses of periscope periscopes are found in a variety of applications but they are almost synonymous with their use in submarines. A better type uses internally reflecting prisms instead of plane mirrors. Periscopes are used in tanks (to enable the observer to see over obstacles without being. To insure a uniform method of designating periscopes on submarines, a standard system of nomenclature is used in all correspondence, specifications, and. Periscopes are optical instruments that can afford submariners a limited. To prevent detection, periscopes are used as infrequently and briefly as possible. Periscopes are still used today in tanks and some submarines. A simple periscope is just a long tube with a mirror at each end.
Periscopes used in submarines are so arranged that they can be turned to permit a view of the entire horizon, with built-in rangefinders and typically six times. Many modern periscopes, such as those used on submarines, use digital technology in place of traditional optics. Earliest types of periscope for use in land warfare. Some of these trench periscopes recall the polemoscope, described by helvelius in the seventeenth century. Tanks use periscopes extensively they allow military personnel to check out their situation without leaving the safety of the tank.). .