Dear Readers
My name is Anuj Kumar
(optometry )
Geometrical optics treat propagation of light in treat of rays and and is valid only if wavelength of light is much lesser than size of obstacles.
The behaviour of light rays is determined by ray optics. A light ray is the straight line path follow by light in travelling from one point to another A group ( or bundle ) of adjacent divergent or convergent rays of light is termed a pencil of light. A bundle of light in which the rays are arranged in a parallel fashion is termed a beam of light.
The ray optics, therefore,uses the geometry of straight lines to account for the macroscopic. phenomenon like rectilinear propagation,reflection and refraction That is way ray optics is also called geometrical optics.
Thus, the geometrical optics deals with formation of images by using such optical devices as lenses,prisms and mirrors and with the laws governing the characteristics of these images,such as their size,shape position and clarity.
The knowledge of geometrical optics is essential to understand the optics of eye, errors of refraction and their correction. Therefore, some of the important aspects of geometrical optics are describad in the following text include:
1.Rectilinear propagation of light,
2.Reflection of light,and
3.Refraction of light.
My name is Anuj Kumar
(optometry )
Geometrical optics treat propagation of light in treat of rays and and is valid only if wavelength of light is much lesser than size of obstacles.
The behaviour of light rays is determined by ray optics. A light ray is the straight line path follow by light in travelling from one point to another A group ( or bundle ) of adjacent divergent or convergent rays of light is termed a pencil of light. A bundle of light in which the rays are arranged in a parallel fashion is termed a beam of light.
The ray optics, therefore,uses the geometry of straight lines to account for the macroscopic. phenomenon like rectilinear propagation,reflection and refraction That is way ray optics is also called geometrical optics.
Thus, the geometrical optics deals with formation of images by using such optical devices as lenses,prisms and mirrors and with the laws governing the characteristics of these images,such as their size,shape position and clarity.
The knowledge of geometrical optics is essential to understand the optics of eye, errors of refraction and their correction. Therefore, some of the important aspects of geometrical optics are describad in the following text include:
1.Rectilinear propagation of light,
2.Reflection of light,and
3.Refraction of light.
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