Photochemical ProcessesLightTripletsPhotochemistryQuantum TheoryEnergy TransferPregnancy, TripletSpectrometry, FluorescenceElectronsChlorophyllLight-Harvesting Protein ComplexesPhotosynthetic Reaction Center Complex ProteinsPheophytinsSpectrum AnalysisHalorhodospira halophilaLuminescencePhotoreceptors, MicrobialBiophysical PhenomenaTrinucleotide RepeatsBiophysicsSpectrophotometryBacteriochlorophyllsFluorescence2-NaphthylamineSpinacia oleraceaPhotolysisModels, ChemicalModels, MolecularMolecular StructureProtonsElectron TransportCarotenoidsPhotosystem II Protein ComplexAbsorptionLauratesIsomerismThermodynamicsKineticsSchiff BasesLasersPhotonsTemperatureRhodobacter sphaeroidesRetinaldehydeFluorescent DyesRutheniumPhotosynthesisSpectrum Analysis, RamanPhotosystem I Protein ComplexBacteriorhodopsinsPregnancy, MultipleMolecular ConformationSolventsPorphyrinsElectromagnetic PhenomenaMetalloporphyrinsMyoglobinPregnancy Reduction, MultifetalTryptophanSolutionsHydrogen BondingProtein ConformationLuminescent MeasurementsTrinucleotide Repeat ExpansionRhodopseudomonasMathematicsHalobacterium salinarumPyrenesSpectrophotometry, UltravioletWaterXanthophyllsOrganometallic CompoundsDNAElectron Spin Resonance SpectroscopyTwinsVibrationOxidation-ReductionPigments, BiologicalQuadrupletsFluorescence PolarizationRhodospirillum rubrumTime FactorsFriedreich AtaxiaUltraviolet RaysModels, TheoreticalHydrogen-Ion ConcentrationCyanobacteriaBase PairingNuclear Magnetic Resonance, BiomolecularChemistry, PhysicalCytosineBase SequenceBinding SitesGuanineLuminescent ProteinsElectrochemistryComputer SimulationSpectrophotometry, InfraredNucleic Acid ConformationCircular Dichroism