Periscope Physics?

Answer

A periscope is a tool for reflection from a hidden position. In its humblest form it involves an outer case with mirrors at each end set equivalent to each other at a 45-degree angle. This form of periscope, with the addition of two simple lenses, served for observation purposes in the trenches during World War I. Military personnel also use periscopes in some gun turrets and in armoured vehicles.
Q&A Related to "Periscope Physics?"
periscopes. r optical instruments dat can afford submariners a ltd though vital visual picture outside their windowless hull.
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