8: Introduction to Quantum Physics Last updated Jun 23, 2019 Save as PDF 7.4: Implications of Special Relativity 8.1: History and Quantum Mechanical Quantities Page ID17130 ( \newcommand{\kernel}{\mathrm{null}\,}\) Topic hierarchy8.1: History and Quantum Mechanical QuantitiesElectrons are emitted from matter that is absorbing energy from electromagnetic radiation, resulting in the photoelectric effect.8.2: Applications of Quantum MechanicsFluorescence and phosphorescence are photoluminescence processes in which material emits photons after excitation.