Table of Contents
What principle is used in periscope?
Laws of Reflection
A periscope is based on the Laws of Reflection, which says that the light from the object falls on a mirror at an angle of 45 degrees from the surface and is mirrored. The mirrored light then falls on another mirror and is mirrored again until it enters the human eye.
What is the principle of periscope What are its uses?
Working Principle. A periscope works on the Laws of Reflection which states that the light from the object falls on one mirror at a 45o angle from the object and is reflected. This reflected light then falls on another mirror and is again reflected until it reaches the human eye.
What is used in the construction of periscope?
Construction. 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 45o at the two ends of the rectangular hollow.
How is a periscope made?
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.
How does a periscope design support the law of reflection?
A periscope is a useful example of the law of reflection at work. In a periscope, light from an object strikes the top mirror at 45° and bounces off at the same angle. This sends light directly down the tube and onto the lower mirror. This mirror, also at a 45° angle, reflects light directly to your eye.
How many plane 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 prisms used in periscope?
As of 2009 modern submarine periscopes incorporate lenses for magnification and function as telescopes. They typically employ prisms and total internal reflection instead of mirrors, because prisms, which do not require coatings on the reflecting surface, are much more rugged than mirrors.
How does a periscope work on the laws of reflection?
A periscope works on the Laws of Reflection which states that the light from the object falls on one mirror at a 45o angle from the object and is reflected. This reflected light then falls on another mirror and is again reflected until it reaches the human eye.
What do you need to know about the periscope?
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. Construction of Periscope.
How does a periscope work on a submarine?
At the bottom of the periscope, the light strikes another mirror and is then reflected into the viewer’s eye. This simple periscope uses only flat mirrors as compared to the periscopes used on submarines, which are usually a complex optical system using both lenses and mirrors. This activity is part of the Optics Educator Guide.
What kind of mirrors are used in a periscope?
Construction. 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.