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==Key Stage 4==
===Meaning===
[[File:AbsorptionSpectraAbsorptionSpectrum.png|right|300px|thumb|The [[Absorption Spectra|absorption spectra]] of several [[metal]]s.]]
'''Absorption spectra''' are the specific [[wavelength]]s of [[light]] [[Absorb (Physics)|absorbed]] by the [[electron]]s in [[atom]]s as they gain [[energy]].