Question

Sir Issac Newton passed a narrow beam of white light into a glass prism and discovered that it gets split into seven colour
a). Name the phenomenon.
b). Name the actual phenomenon associated with this phenomenon.​

Answer 1

Answer:

a). Issac Newton was the first person to use a glass prism to obtain the spectrum of sunlight. Newton tried to split the colours of spectrum of sunlight (white light) further by using another identical prism. but he could not get any more colours. he then placed a similar prism in an inverted position with respect to first prism. This allowed all colours to pasws through the second prism and found a bean of white light emerging from the other side of the 2nd prism.

This experiment gave Issac Newton the idea that the sunlight is made up of seven colours.

b). Spectrum of white light