This is one of the prettiest experiments in Physics forcing white light from a candle or a bulb to go through a little obstacle called a diffraction grating.
What the viewer see now is two rainbow spectrums - one on the left and one on the right side of the white light source - called first order spectrums.
The violet colur is always nearer the centre white light. In the lab we see as many as 16 rainbow spectrums on the left and another 16 rainbow spectrum on the right. Cool right?
Cool.. why not take picture of all the 32 rainbow spectrums.. 16 rainbow spectrums on each side.. would love to actually see it.
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