Human Eye & The Colourful World - L5 | Class 10 | Unacademy Foundation - Physics | Seema Rao

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In lecture 5 from the chapter 'Human Eye & The Colourful World', Seema Ma'am will explain a few interesting topics like why do human beings have two eyes for vision & not just one? and how light reflects in the glass prism.

Time Stamps
1) Why do we have two eyes for vision & not just one - 04:31
2) Glass Prism - 14:44
3) Refraction of light through a glass prism - 19:27
4) Dispersion of light - 23:12

A prism is a transparent optical element with flat, polished surfaces that refract light. At least two of the flat surfaces must have an angle between them. The exact angles between the surfaces depend on the application. The traditional geometrical shape is that of a triangular prism with a triangular base and rectangular sides, and in colloquial use "prism" usually refers to this type. Some types of the optical prism are not in fact in the shape of geometric prisms. Prisms can be made from any material that is transparent to the wavelengths for which they are designed.
A dispersive prism can be used to break light up into its constituent spectral colors (the colors of the rainbow). Furthermore, prisms can be used to reflect light or to split light into components with different polarizations.

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