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Geometrical Optics

Methods of Reducing Spherical Aberration

by shabbusharma

How to Reduce Spherical Aberration The following 5 methods are usually used to reduce the spherical aberration. By Stop Method. By using plano-convex lenses. By using two convergent lenses separated …

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Aberration in Optics and Types of Aberration

by shabbusharma

Aberration in Optics In the simple theory of image formation by lenses, it is assumed that an object is situated very close to the principal axis and each point object …

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Combination of Lenses

by shabbusharma

Suppose we have two lenses of focal lengths f1 and f2 separated by a distance x as shown in fig below. L1, L2 correspond to the position of two lenses …

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Translation Matrix

by shabbusharma

The matrix Tm is called Translation Matrix. The matrices can be used to find the position of the final image. The method of writing linear equations for the coordinates of …

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Fermat’s Principle of Least Time

by shabbusharma

What is fermat’s principle? This principle states that the light always travels that path in a medium from one point to another point which takes the minimum (i.e least) time. …

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Optical Path and Geometrical Path

by shabbusharma

The branch of physics which deals with the study of optical phenomenon like reflection, refraction, dispersion, interference, diffraction, polarization etc. is known as optics. Optics is classified into two categories: …

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