periscope

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periscope
Light enters the top lens of a periscope, reflects off a mirror set at a 45 degree angle, travels down the periscope tube, and reflects off a second mirror, also set at a 45 degree angle. Light that reflects off the second mirror exits through the bottom lens and into the eye of the user.

per·i·scope

 (pĕr′ĭ-skōp′)
n.
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.

per′i·scop′ic (-skŏp′ĭk), per′i·scop′i·cal (-ĭ-kəl) adj.

periscope

(ˈpɛrɪˌskəʊp)
n
any of a number of optical instruments that enable the user to view objects that are not in the direct line of vision, such as one in a submarine for looking above the surface of the water. They have a system of mirrors or prisms to reflect the light and often contain focusing lenses
[C19: from Greek periskopein to look around; see peri-, -scope]

per•i•scope

art at periosteum
(ˈpɛr əˌskoʊp)

n.
an optical instrument for viewing objects in an obstructed field of vision, consisting of a tube with an arrangement of prisms or mirrors and, usu., lenses: used esp. in submarines.
[1815–25; back formation from periscopic]
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periscope
Light enters the top lens of the periscope, reflects off a mirror set at a 45° angle, travels down the periscope tube, and reflects off a second mirror, also set at a 45° angle. The light that reflects off the second mirror exits through the bottom lens and into the eye of the user.

per·i·scope

(pĕr′ĭ-skōp′)
An instrument that has angled mirrors or prisms and allows objects not in the direct line of sight to be seen.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.periscope - an optical instrument that provides a view of an otherwise obstructed fieldperiscope - an optical instrument that provides a view of an otherwise obstructed field
optical instrument - an instrument designed to aid vision
pigboat, submarine, U-boat, sub - a submersible warship usually armed with torpedoes
Translations
بيرسكوب: مِنْظار الغَوّاصات والخَنادِق
periskop
periskop
periszkóp
sjónpípa, hringsjá
periskopas
periskops
periskop

periscope

[ˈperɪskəʊp] Nperiscopio m

periscope

[ˈpɛrɪskəʊp] npériscope m

periscope

nPeriskop nt

periscope

[ˈpɛrɪˌskəʊp] nperiscopio

periscope

(ˈperiskəup) noun
a tube containing mirrors, through which a person can look in order to see things which cannot be seen from the position the person is in, especially one used in submarines when under water to allow a person to see what is happening on the surface of the sea.
References in periodicals archive ?
The company said the periscopes & vision block market in the US is currently valued at USD8m-10m annually and USD40-50mi worldwide.
The Company's current footprint in the periscopes & vision block market is an estimated 75% market share in the U.
Since the employer's focus is primarily on medical, persistency on the dental and vision block of business is "carrier favorable.

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