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Optics

Difference between constructive and destructive intereference

 What is interference? Interference of light is defined as:”When two or more light waves having same frequency,same wavelength and same amplitude meet together in a medium at a point,they cancel or enhance the effect of each other at that point.This phenomenon is called interference of light waves.” Types of interference: There are two types of interference of light. Constructive interference ...

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Diffraction of light definition examples and types

Diffraction of light definition “The bending of light waves around the corners of an opening or obstacle and spreading of light waves into geometrical shadow is called diffraction.”Diffraction effect depends upon the size of obstacle.Diffraction of light takes place if the size of obstacle is comparable to the wavelength of light.Light waves are very small in wavelength,i.e,from 4×10-7 m to 7 × ...

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Different types of fibre optic cables and connectors with applications

What are optical fibers? OPtical fibers are thread like structure made of glass and plastic in which light travel by total internal reflection. Who invented optical fibers? For hundreds of years man has communicated using flashes of reflected Sunlight by day and lanterns by night.Navy signalmen still use powerful blinker lights to transmit coded massages to other ships during periods ...

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Difference between convex and concave mirror

What are Spherical Mirrors? A mirrors whose polished, reflecting surface is a part of a hollow sphere of glass or plastic is called a spherical mirror. In a spherical mirror, one of the two curved surface is coated with a thin layer of silver followed by a coating of red lead oxide paint. Thus, one side of the spherical mirror ...

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Refraction of light examples and snell’s law

What is Refraction of Light? Refraction of light is defined as:”The process of bending of light as it passes from air into glass and vice versa is called refraction of light.” If we dip one end of a pencil or some other object into water at an angle to the surface, the submerged part looks bent. Its image is displaced ...

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Difference between convex and concave lens

What are Lenses? “Lens is a piece of transparent material of which one or both sides are  spherical.”It is any transparent material having two surfaces, of which at least one is curved. Lenses refract light in such a way that an image of the object is formed.Each surface of a lens is a part of a sphere.The centre of that ...

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Reflection of light laws with types and examples in daily life

 Reflection of light definition Reflection is defined as:”When light traveling in a certain medium falls on the surface of another medium,a part of it turns back in the same medium.”We see a page of a book because light reflects from each part of the page in all directions,so that some of the light rays from each part of the page ...

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5 properties of light in physics

What is light and what does it consists of ?  Light is a form of energy which is given by luminous objects.The Sun,bulb,candle,etc.are luminous objects.Other objects which do not give out light are called non luminous objects.Light can pass through transparent materials.Glass,water,clear plastic and air are transparent materials.Light can not pass through translucent materials.A tracing paper,frosted glass and waxed paper ...

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Polarization of light:definition,types & uses

What is polarization of light? “Separation of light waves with electric field vector oriented only in a single direction is called polarization or this is a process in which light and other radiations are restricted to vibrate in a single direction only and therefore the electric/magnetic field of the wave is unsymmetrical.” In 1808 Etienne Louis Malus (1775-1812) accidentally observed ...

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