Talk:Absorption (electromagnetic radiation)

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I want an example for change from colorless to colored by using UV spectroscopy.

Spectroscopy doesn't change the colour of a compound, it measures it. UV spectroscopy measures UV light absorbed by an compound. If a compound does not absorb any light in the visible spectrum, the compound therefore appears colourless, even though it may absorb light in other areas of the electromagnetic spectrum, for example ultraviolet, infrared, x-rays, gamma rays etc. Silver 10:14, 8 March 2007 (UTC)

Absorption is when light absorbs something.

Firstly, I hope you don’t mind I corrected your spelling and actually, absorption in a physics context means when something absorbs light. Light, in reference to all electromagnetic radiation, not just visible light, is just packets of energy called photons, to which electrons then absorb. The photon does not absorb the electron. Silver 10:14, 8 March 2007 (UTC)