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How the use of mirrors helps the user of a periscope see above the water surface?
Wiki User
∙ 13y ago
The mirrors are fitted at 45 degree angles in a periscope in the opposite directions. when you see through the periscope, the image gets reflected.
Wiki User
∙ 13y ago
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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 kind of surface reflects light to form an enlarged image?
If you're talking about mirrors then convex is the mirrors that makes things appear larger. Hope this helps!
What is the advantage of using prisms in a periscope rather than plane mirrors?
A bathroom mirror has a reflective film (usually sputtered silver) applied to its rear surface. Unfortunately rear reflective surface mirrors produce slight double images since a small amount of light reflects off of the front surface of the glass in addition to the light reflected off of the silver on the rear glass surface. A front surface mirror has a reflective film (usually an extremely thin layer of vacuum deposited aluminum) applied to the front surface of the glass. The problem with the above types of mirrors is that salt water is corrosive to metals. Salt water exposure would quickly eat away at the silver or aluminum coatings which create the reflection in the above types of mirrors. So instead periscopes use right angle glass prisms since right angle glass prisms inherently produce an internal reflection, since no metal film is needed in order to create this internal reflection, and since the glass is very resistant to corrosion from salt water.
What is igneous rocks that form below Eart's surface are called?
Below the Earth's surface an Igneous rock is intrusive. Above the Earth's surface it is called extrusive.Hope this helps.
Why does a mirror reflect light so well?
Because it has a shiny & smooth surface which helps to reflect the light... Take an example of tree. A tree have a rough surface due to which light can be reflect. So All of this depends on the smoothness of surface.. :-)
Disadvantages and advantages of periscope?
advantages helps us to see above crowds and its usesdisadvantages does not work in misty weather does not work when screen covered with dust
What is molten rock above the earth surface?
Molten rock at the earth's surface is called lava. Molten rock beneath the earth's surface is called magma.
What mirrors public opinion but also helps it?
The events that happen in the day to day mirrors the public opinion. The political leaders and the media help shape it.
How mirrors help cars?
it helps the person see both sides of the car
What is the superior lobe and what does it do?
The Left lung is divided into two lobes, an upper and a lower, by the oblique fissure, which extends from the coastal to the mediastinal surface of the lung both above and below the hilus. It lies above and in front of this fissure, and includes the apex, the anterior border, and a considerable part of the coastal surface and the greater part of the mediastinal surface of the lung.
How does surface tension helps organisms?
Surface tension helps organisms in the sense that it allows for a wide variety of biological phenomena. For instance, some water insects are able to walk on water due to surface tension.
What fuse controls the remote mirrors on a 2000 Ford Expedition?
The owners manual shows : # 4 - 7.5 amp fuse - for Mirrors , Remote Entry Module , Memory Functions ( seats and pedals ) # 17 - 10 amp - Heated Mirrors , Heated Grid Switch Indicator Hope that helps
