In wwii, periscopes were used in tanks so that the driver, gunner and commander might observe their surroundings, as well as for aim. What is a periscopeperiscope is an optical instrument which uses a system of prisms, lenses, or mirrors to reflect images through a tube. These periscopes have been used for everything from military purposes to observing marine life. Just like periscopes, telescopes change the direction. A periscope is an optical device for conducting observations from a. Tanks use periscopes extensively they allow military personnel to check. However, it is used specifically to designate instruments that are designed for horizontal view only.
The term altiscope is applied to a periscope from which the. The optical system used in the typical contemporary submarine periscope is unique in that, like the borescope, the. Earliest types of periscope for use in land warfare. Some of these trench periscopes recall the polemoscope, described by helvelius in the seventeenth century. Record some of the following features used for the identification of birds the shape and color of the eyes, feet,. .