The definition of a periscope is a set of lenses, mirrors or prisms on a tube
allowing the viewer to see objected reflected on the other end
. … An instrument that has angled mirrors or prisms and allows objects not in the direct line of sight to be seen, often used on submarines and in military reconnaissance.
What is a periscope easy definition?
:
a tubular optical instrument containing lenses and mirrors by which an observer obtains an otherwise obstructed field of view
.
What is a periscope for Class 6?
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.
What is periscope and its uses?
Periscope, optical instrument used in
land and sea warfare, submarine navigation, and elsewhere to enable an observer to see his surroundings while remaining under cover
, behind armour, or submerged.
What is a sentence for periscope?
Short & Simple Example Sentence For Periscope | Periscope Sentence.
He has a periscope that overlooks my quarters. I lowered periscope and dived to 90 feet. The periscope work makes one sleepy also.
What is periscope principle?
It works on the principle of
simple reflection
. Light from the object is reflected by a series of mirrors inclined at a certain angle which allows it to reach the observer bypassing obstacles that may have been present in a straight line path from the object to the observer.
What is periscope Class 8?
A periscope is defined as
an instrument used for observing over, around or through an obstacle or object which is prevented by direct line of sight
. It consists of an outer case with mirrors at each end at 45° angle. These mirrors are placed parallel to the surface.
What are the advantages of periscope?
- Increased Access to Guest Speakers. …
- Creation of Multimedia Projects. …
- Facilitating Interpersonal/Professional Relationships. …
- Expanding Educational Opportunities. …
- Decreasing Reliance on the Media Binary (TV and Video)
Who uses periscope?
The periscope is used in
the submarines
to see what is going on the water surface, It was used for observation purposes in the trenches during World War I, It is used in some gun turrets and it is used in armed vehicles.
Which lens is used in periscope?
Only
plane mirrors
are used for a simple periscope. An expanded view of the object is required for some distance visions, and therefore convex mirrors are helpful. An erect image is produced by a double reversal of the object. Convex mirrors can be used to view objects that are too close to each other.
What is called periscope?
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.
How is periscope constructed?
Periscopes can be constructed using
a pair of flat mirrors or prisms and a rectangular hollow tube that has a viewing window at the top and bottom of the tube
. The mirrors within this structure are fixed at an angle of 45
o
at the two ends of the rectangular hollow.
What is a periscope camera?
Simply put, a periscope camera (also referred to as a periscope zoom lens) in a smartphone refers to
a mobile phone camera unit
which, due to employing a prism mirror system, extends its focal length by positioning the image sensor and zooms lens array sideways.
What is the root word of periscope?
Word Origin for periscope
C19: from
Greek periskopein to look around
; see peri-, -scope.
How do you use pantomime in a sentence?
Examples of pantomime in a Sentence
Noun In the game of charades,
one player uses pantomime to represent a word or phrase that the other players have to try to guess
. We saw pantomimes at the fair. a ballet that is part dance and part pantomime Verb He pantomimed someone talking on the phone.
How do you use inspect in a sentence?
- The captain wants to inspect your kit.
- Two po-faced men came to inspect the house.
- Elaine went outside to inspect the playing field.
- I got out of the car to inspect the damage .
- Each party in the case is entitled to inspect the documents held by the other.
