What Are the Uses of a Periscope?
The uses of a periscope include observation around barriers and at times when viewing a location directly would be dangerous. Periscopes are typically used in submarines to see above the water, in tanks to see above and around the vehicle and by people attending parades and other events to see over the crowd.
Periscopes also are sometimes used for seeing into nuclear reactors and were used for seeing out of trenches in World War I. Simple versions of the optical instruments were first used in the 1600s, with submarine periscopes first used in the 1800s. In his famous 1927 trans-Atlantic flight, Charles Lindbergh carried so much fuel that he needed a periscope to see around the fuel tank of his plane.
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