Lorenz–Mie theory, 863 lot in analytical chemistry , 863 low energy electron diffraction (LEED), 863low pressure electrical discharge, 863 low temperature UV–VIS absorption spectroscopy, 864 low-pressure mercury lamp (arc), 864 low-spin, 864 low-spin state, 864 lowest observed adverse effect level (LOAEL), 865 lowest-observed-adverse-effect-level (LOAEL), 865 lowest-observed-effect-level (LOEL), 865 lumen , 865 luminance, 866 luminescence, 866 luminescence quenching, 866 luminescence spectrometer, 866 luminous flux, 867 luminous intensity , 867 luminous quantities, 867 lumiphore (luminophore), 867 lux , 867 lyases, 868 lyate ion, 868 lyonium ion, 868 lyophilic, 868 lyophilic sols, 869 lyotropic mesophase, 869 lysimeter, 869 µ- (mu) in inorganic nomenclature , 869 machine [obsolete] in analysis , 869 macrocycle, 870 macrolides, 870 macrometeorology in atmospheric chemistry , 870 macromolecular isomorphism, 870 macromolecule (polymer molecule), 870 macromonomer, 871 macromonomer molecule, 871 macromonomeric unit (macromonomer unit), 871 macropore in catalysis, 871 macroporous polymer, 872 macroradical, 872 macroscopic cross-section, 872 macroscopic diffusion control [obsolete] , 872 macroscopic film, 873 macroscopic kinetics, 873 magic angle, 873 magnetic circular dichroism, 874 magnetic deflection in mass spectrometry , 874