UV-visible absorption spectra UV-visible absorption spectra this discussion of conjugated systems UV-Visible Absorption Spectra UV-Visible Absorption Spectra UV-Visible Absorption Spectra http://www.chemguide.co.uk/analysis/uvvisible/theory.html http://www.chemguide.co.uk/analysis/uvvisible/theory.html UV-Visible Absorption Spectra http://www.chemguide.co.uk/analysis/uvvisible/theory.html UV-Visible Absorption Spectra