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periscope
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The answer PERISCOPE has 35 possible clue(s) in existing crosswords.
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The word PERISCOPE is VALID in some board games. Check PERISCOPE in word games in Scrabble, Words With Friends, see scores, anagrams etc.
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Definitions of periscope in various dictionaries:
noun - an optical instrument that provides a view of an otherwise obstructed field
Any of various tubular optical instruments that contain reflecting elements, such as mirrors and prisms, to permit observation from a position displaced from a direct line of sight.
PERISCOPE - A periscope is an instrument for observation over, around or through an object, obstacle or condition that prevents direct line-of-sight observation ...
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| At the bottom of the Encarta article on this device are links to "optics" & "submarine" |
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| Any of various tubular optical instruments that contain reflecting elements, such as mirrors and prisms, to permit observation from a position displaced from a direct line of sight. |
| an apparatus consisting of a tube attached to a set of mirrors or prisms, by which an observer (typically in a submerged submarine or behind a high obstacle) can see things that are otherwise out of sight. |
| an optical instrument that provides a view of an otherwise obstructed field |
| a long, vertical tube containing a set of mirrors that gives you a view of what is above you when you look through the bottom of the tube: |
| a vertical tube containing mirrors that can give you a view of what is above you when you look through the bottom of the tube: |
| Periscope description |
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| A periscope is an instrument for observation over, around or through an object, obstacle or condition that prevents direct line-of-sight observation from an observer's current position.In its simplest form, it consists of an outer case with mirrors at each end set parallel to each other at a 45° 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.More complex periscopes using prisms or advanced fiber optics instead of mirrors and providing magnification operate on submarines and in various fields of science. The overall design of the classical submarine periscope is very simple: two telescopes pointed into each other. If the two telescopes have different individual magnification, the difference between them causes an overall magnification or reduction. |