# Optics

## Lateral Inversion

Lateral Inversion is basically the reversal of left and right. For example, when the letter b is laterally reversed, it forms the letter d. (more or less). It is commonly …

## Prism Formula

Prism is a solid shape with two of its faces as parallel and identical polygons and the rest of the faces connecting them being parallelograms. In this article, we are …

## Difference Between Convex and Concave Lens

Knowing the difference between convex and concave lens is one of the confusing topics for students in the field of optics. In this article, we will learn all the major …

## Biconvex Lens

Biconvex lens is composed of two spherical surfaces of glass-air interfaces. The two circular surfaces are convex, or bulging out, hence the name biconvex lens. History The first evidence of any …

## Fisheye Lens

A fisheye lens is an ultra-wide-angle lens designed for shooting wide angles, usually 180°. Fisheye lenses use a special mapping, instead of producing an image with straight lines of perspective. …

## Total Internal Reflection

Total Internal Reflection (TIR) is basically a phenomenon where light rays travel from a more optically denser medium to a less optically denser medium and gets reflected back into the …

## Critical Angle

When a ray of light travels from denser to rarer medium it bends away from the normal and as the angle of incidence in denser medium increases, the angle of …

## Brewster’s Law

Brewster’s Law gives the exact angle of incidence for different materials and wavelengths of light for which the reflected ray is completely polarised. This angle of incidence is called the …

## Lens Maker’s Formula

The Lens Maker’s Formula is an expression used to find the focal length of a lens for which the refractive index, as well as the radii of curvature, are known. …

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