Angle of Deviation
The measure of refraction in the path of light after passing through the prism is measured by measuring the angle of deviation. The angle of deviation is defined as the angle made between the incident ray of light entering the prism and the refracted ray emerging out of the prism.
The deviation of the light waves after passing through the prism is inversely proportional to the wavelength of the light as the wavelength of the Violet light is the least and so the violet light get deviates the most, whereas the wavelength of the red light is the most and hence it gets deviates the least.
The image below shows the angle of deviation:
The visible pattern of the spectrum observed by us when the light passes through the prism is because of the change in the wavelength of the various colour lights.
Dispersion of Light through a Prism
Dispersion of Light happens when white light is split into its constituent hues due to refraction. Dispersion of Light can be achieved through various means but the most common way to achieve dispersion of light is through Prism. Dispersion of light by a prism results in the breaking of white light into its seven constituents.
Dispersion of Light through a prism is achieved by allowing the white light to fall on the prism and passing the light through the prism to break it into its constituent colours. In this article, we will learn about the Dispersion of Light, its experiment and others in detail.