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A periscope is an instrument for observation from a concealed position. In its simplest form it consists of a tube with mirrors at each end set parallel 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.
Also known as berinscope.
More complex periscopes, using prisms instead of mirrors, and providing magnification, operate on submarines. 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.
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Type of lens used in periscope?
Virtual, larger than object
Did periscope use convex or concave mirror?
The basic periscope uses flat mirrors, to bend and offset the optical path. If magnification is required, then the periscope will use convex objective and eyepiece lenses, becoming a refracting telescope with an offset in its optical path.
What is a periscope in detail?
A periscope is an optical instrument that uses a system of prisms, lenses, or mirrors to reflect images through a tube. Light from a distant object strikes the top mirror and is then reflected at an angle of 90 degrees down the periscope tube. At the bottom of the periscope, the light strikes another mirror and is then reflected into the viewer's eye.
How does light ray travel through a periscope?
Light always travels in straight lines. It comes into the periscope, gets reflected once through 90 degrees by a mirror placed at an angle, then is reflected back through 90 degrees again by a second mirror. Sometimes lenses are also used to magnify the image.
What type of lenses project images?
Convex lenses.
What part of speech is periscope?
The word "periscope" is a noun. It refers to a device used for seeing over obstacles or around corners, typically by the use of mirrors and lenses.
What are the parts of the periscope?
The periscope has several parts: the ocular lenses, the mirror or prism, inversion/reversion prisms, relay lenses, another mirror or prism, and objective lenses.
What type of waves are being used in a periscope?
Visible waves, ie, visible light is piped through a periscope.
Type of lens used in periscope?
Virtual, larger than object
What are the ocular lenses of a periscope?
Ocular in this context means eyepiece - the piece that is closest to the human eye that is watching.
Did periscope use convex or concave mirror?
The basic periscope uses flat mirrors, to bend and offset the optical path. If magnification is required, then the periscope will use convex objective and eyepiece lenses, becoming a refracting telescope with an offset in its optical path.
Who invente periscopes?
Simon Lake is attributed with the invention of the Periscope in 1902. However, Sir Howard Grub is known for perfecting this design.
What is a periscope used for?
A periscope: An optical instrument that uses a series of prisms, lenses and mirrors to reflect images through a tube. Most often associated with submarines but they can also have other practical uses.A periscope works by using mirrors to bounce light from one mirror to the other. A normal periscope uses two mirrors at 45 degrees angles to the direction you want to see. The light bounces from one to the other and then to your eye. A periscope helps you to see around corners and over walls, they are also used on submarines so that they out and see around things.
What is a periscope in detail?
A periscope is an optical instrument that uses a system of prisms, lenses, or mirrors to reflect images through a tube. Light from a distant object strikes the top mirror and is then reflected at an angle of 90 degrees down the periscope tube. At the bottom of the periscope, the light strikes another mirror and is then reflected into the viewer's eye.
How periscope is made?
A Periscope is a type of observation material used during World War I. It is made up of two mirrors in parallel position with an angle of 45 degree placed inside a case. Periscope can also be seen on submarines and other military equipment.
What is periscope means?
a tubular optical instrument containing lenses and mirrors by which an observer obtains an otherwise obstructed field of view.
What type of reflection is made by periscope?
it is prism
