Basic principles of photochemistry; absorption and emission of radiation, including the Beer-Lambert law, spectroscopic nomenclature; photodissociation; emission processes (1), including luminescence, kinetics and quantum efficiencies of emmission processes, fluorescence, phosphorescence, chemiluminescence; energy transfer - emission processes (2); reactions of excited species, including intramolecular processes - isomerization and rearrangement; techniques in photochemistry, including incandescent filament lamps, discharge lamps, lasers, synchrotron radiation; photochemistry in action, including atmospheric photochemistry, photosynthesis, vision, photoimaging, photography, photochromism, photopolymerization, photodegration and photostabilization, solar energy storage, photoelectrochemical energy storage, optical brighteners, photomedicine. (Part contents)