What is a periscope for what purpose is it used explain its working with a relevant diagram?

What is a periscope for what purpose is it used explain its working with a relevant diagram?

Periscopes are used in order to see the objects that are not in direct line of sight. Its working is based on the laws of reflection. It consists of a set of parallel plane mirrors as shown in the diagram.

How could you build your periscope to see behind you?

Reflecting the light and image so that you can see the object. 2. How could you construct a periscope to see something behind you? Change the mirror and top end of the periscope so that it faces the opposite way.

How are periscopes used today?

A periscope lets you see over the top of things, such as fences or walls that you aren’t tall enough to look over. You can also use it to see around corners. Periscopes are still used today in tanks and some submarines. A simple periscope is just a long tube with a mirror at each end.

What is periscope where it is used short answer?

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. In simple way, periscope is just a long tube with a mirror at each end.

Why do we need plane mirrors in a lift?

Mirrors actually help to give the optical illusion of the lift being larger than it is, which helps some people who have claustrophobia to deal with their journey within the box. The purpose of having mirrors within the lift is to allow you to see what everyone is doing.

How many mirrors are used in periscope?

two mirrors
A periscope is an instrument which includes two mirrors or reflecting prisms to vary the direction of the light coming from the sight which is being observed.

Why are there mirrors in gyms?

Mirrors Make a Room Lighter The gym floor must be well lit so that people can exercise safely. Mirrors reflect light and are often used to enhance light levels in areas or corners of the gym that need brightening up.

How does an elevator lift work?

Elevators work via a pulley-esque system whereby a metal rope connects to the top of the elevator car that travels through a “sheave” in the engine room, according to Discovery. Thus, the sheave acts as a pulley wheel featuring grooves to hold onto the metal rope (also known as a cable) securely.

Why do periscope use plane mirrors?

It’s important that your mirrors are placed at a 45° angle, because light always reflects away from a mirror at the same angle that it hits it. In a periscope, light from an object strikes the top mirror at 45° and bounces off at the same angle. This mirror, also at a 45° angle, reflects light directly to your eye.

Can a periscope see underwater?

Periscopes allow a submarine, when submerged at a relatively shallow depth, to search visually for nearby targets and threats on the surface of the water and in the air. When not in use, a submarine’s periscope retracts into the hull.

How does a periscope work?

Simple periscopes use two mirrors inclined at an angle of 45 degrees while complex ones use prisms instead of mirrors providing magnification as well. The mirrors are placed at 45 degrees facing each other. When light falls on one mirror, it is reflected back and falls on the other mirror and gets reflected to the observer’s eyes.

Why do submarines have periscopes?

Submarines have periscopes so that people inside can what is on the surface of the water. A periscope is a useful example of the law of reflection at work. It’s important that your mirrors are placed at a 45° angle, because light always reflects away from a mirror at the same angle that it hits it.

Why are mirrors placed at 45 degrees in a periscope?

The mirrors are placed at an angle of 45° such that when light falls on one of the mirrors, it gets reflected back making it fall on the other mirror which further gets reflected back to the observer’s eyes. But in more complex periscopes, prisms are used in place of mirrors.

Who invented the periscope in the military?

Hevelius saw military applications for his invention. In 1854, Hippolyte Marié-Davy invented the first naval periscope, consisting of a vertical tube with two small mirrors fixed at each end at 45°. Simon Lake used periscopes in his submarines in 1902.