With the aid of a well labelled diagram briefly explain how a pure spectrum may be produced.
Answers
Explanation:
You have seen that white light is dispersed into its seven-colour by a prism.
why do we get this colour?
differentdifferent colours of light band through the different angle with respect to the incident ray as they pass to the prism. the red light bends the least while the violet the most. the range of each colour emerge by the different path and thus become the distinct. It is the band of the distinct colour that we see in the spectrum.
Isaac Isaac Newton was the first to use a glass prism to obtain the spectrum of sunlight. he tried to split the colours of the spectrum of white light further using the another similar prism. however, he could not get any more colours. then he place a second identity prism in an inverted position with respect to the first prism. This allowed all the colour of the spectrum to pass II prism. I found a beam of white light emergency from the second prism. this observation give the Newton the idea that the sunlight is made up of seven colours.
Any light that gives a spectrum similar to that of spectrum is often referred to as White light.
