From White to Rainbow
Tech Rumination by Anirudh White light is not just one colour but is made up of seven different colours: Red , Orange , Yellow , Green , Blue , Indigo , and Violet . We can remember this order using the acronym VIBGYOR . When white light passes through a prism , it splits into its seven component colours, and the range of colours obtained when dispersion takes place is called a spectrum . A real-life example of this phenomenon is the rainbow . After raining, there are water droplets in the sky which act as prisms . When sunlight passes through these droplets, the light disperses and forms a rainbow with the seven colours of the spectrum. Another example of dispersion can be seen on a Compact Disk (CD) . CDs are made up of a thin metal layer, usually made of aluminium, and a protective layer on top. When light hits the CD, it is reflected off the metal layer and scattered back to our eyes, creating a range of colours. Sir Isaac New...