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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.
How and why can you see objects through a periscope?
A periscope uses mirrors to reflect light, allowing you to see objects that are not in your direct line of sight. When you look through a periscope, you are essentially looking at the reflection of the object rather than directly at it. This design helps in situations where visibility is obstructed or when you need to remain hidden from view.
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 concave lens in a periscope?
A concave lens in a periscope is used to invert the image received from the object being observed. This type of lens helps to create a larger field of view within the periscope by expanding the image. The concave lens also helps to focus the incoming light rays onto the mirror system of the periscope for reflection.
Are convex mirrors used in projectors?
Yes, convex mirrors are used in projectors to reflect and focus light onto the screen or surface. The curved shape of the convex mirror helps to spread the light rays in a way that helps to create a clearer and larger image.
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.
Why are mirrors often slightly curved?
Mirrors are often slightly curved to prevent distorting the reflection of objects, known as "fun-house" effect. The slight curvature helps to maintain a more accurate reflection across the entire surface of the mirror. Additionally, curved mirrors can also help to improve the field of view for the observer.
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.. :-)
Why does the fact that a periscope has two mirrors make what you see through it easier to understand?
The two mirrors in a periscope work together to reflect and invert the image twice, allowing the viewer to see the image in the correct orientation. This design helps to compensate for the natural inversion caused by reflection and ensures that the image appears upright and aligned with what the viewer would see with the naked eye.
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 level lies above the troposphere?
The stratosphere lies above the troposphere. It extends from about 12 to 50 kilometers above the Earth's surface and contains the ozone layer, which helps absorb ultraviolet radiation from the sun.
Why are mirrors made up of silver?
Mirrors are coated with a thin layer of silver because silver reflects light very well. This creates a clear, high-quality reflection for the mirror. Silver is also resistant to corrosion and helps maintain the reflective properties of the mirror over time.
