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  • ...ours|theory of colour]] based on the observation that a [[Dispersive prism|prism]] decomposes [[Electromagnetic_spectrum#Visible_radiation_.28light.29|white ...en when the light ray entering the prism is circular, which is to say, the prism refracts different colours by different angles.<ref name="Whittaker" /><ref
    109 KB (15,996 words) - 15:04, 19 July 2017