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==Key Stage 4==
===Meaning===
[[File:FlameEmissionSpectroscopy.png|right|300px|thumb|The [[Emission SpectrumSpectra|emission spectra]] from the of several [[metal]]s.]]
'''Emission spectra''' are the specific [[wavelength]]s of [[light]] [[emit]]ted by the [[electron]]s in [[atom]]s as they lose [[energy]].