Answer. hey, dispersion requires medium(denser&rarer),but there is no medium in space. space is like vaccum. So there is no dispersion of light in it!!!

White light separates its color when it passes through a transparent. medium. When light passes through a triangular prism, its color separates. because of their different refractive indices.

The spectrum of white light consists of six basic colours arranged in a specific order: red, orange, yellow, green, blue and violet. Although Newton understood that a beam of light of a particular colour is always deviated by the same amount, he did not appear to understand why this is so.

Dispersion occurs due to the different degrees of refraction experienced by different colours of light. Light of different colours may travel with the same speed in a vacuum, but they travel at different speeds in some refracting medium. The speed of violet light is relatively lower than that of red light.

The ​refraction of light​ is the reason why a prism disperses white light forming a spectrum. Refraction occurs because light travels more slowly in a dense medium, such as glass, than it does in air.

Scattering and dispersion of light are responsible for many natural phenomena taking place around us. If they do not occur then very common things won’t be visible to us. The sky appears blue because of scattering of light and in its absence, it would appear colorless.

Spectrum. When white light passes through a prism, it disperses into a band of seven different colours. This band of colours obtained from the dispersion of light is called a spectrum. Dispersion of light in a prism results in the formation of a spectrum.

When white light after passing through a prism falls on a screen, only the seven colors (VIBGYOR) are mainly seen. These band of colors obtained on screen, is called spectrum. The prism splits the colors present in white light. The splitting of white light into its constituent colors is called dispersion .

Dispersion is the phenomenon in which white light is split into its constituent colors. Scattering is the phenomenon due to which the light rays deviate from its original path in a different direction. The scattering of light is the reason for the blue color of the sky.

When light passes from one medium to any other medium say air, a glass of water then a part of the light is absorbed by particles of the medium preceded by its subsequent radiation in a particular direction. This phenomenon is termed as a scattering of light.

Sir Chandrasekhara Venkata Raman

Observing water over three seas with a simple Nicol prism, Raman concluded that water molecules scatter light just like air molecules do. Light scattering in air was Rayleigh’s explanation for why the sky was blue; and Raman found that this was true also for why the sea was blue.

He immediately began to conduct experiments on board the ship using some simple instruments he had with him. At that time, scientists believed the sea was blue because it reflected the colour of the sky, but Raman found that it was the water itself that caused blue light to scatter more than other colours in light.

navy blue

The sky is blue due to a phenomenon called Raleigh scattering. This scattering refers to the scattering of electromagnetic radiation (of which light is a form) by particles of a much smaller wavelength.

Blue light is scattered in all directions by the tiny molecules of air in Earth’s atmosphere. Blue is scattered more than other colors because it travels as shorter, smaller waves. This is why we see a blue sky most of the time. Closer to the horizon, the sky fades to a lighter blue or white.