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→About Spectroscopy
===About Spectroscopy===
: When [[White Light|white light]] passes through a '''spectroscope''' the colours are split into a [[spectrum]] (the rainbow).
: If [[White Light|white light]] passes through a [[gas]] before it reaches the '''spectroscope''' the [[chemical]]s in the [[gas]] will [[Absorb (Physics)|absorb]] certain [[wavelength]]s of [[light]] that are unique to the [[chemical]]s in that [[gas]]. When this [[light]] is passed through a '''spectroscope''' it produces an [[Absorption SpectrumSpectra|absorption spectrum]] that appears as a rainbow but with dark lines at specific [[wavelength]]s.
: If the [[electron]]s in a [[chemical]] gain [[energy]] they can move up to a higher [[Electron Orbital|electron orbital]]. When they fall back down to the lower [[Electron Orbital|electron orbital]] they release a specific [[wavelength]]s of [[light]]. When this [[light]] is passed through a '''spectroscope''' it produces an [[Emission Spectra|emission spectrum]] or a [[Emission Spectra|line spectrum]] that appears as a series of lines of specific [[wavelength]]s.