A method for inhibiting the premature polymerization and the polymer growth of ethylenically unsaturated monomers is disclosed wherein the method comprises adding to said monomers an effective amount of at least one hydrogen donor or electron acceptor. There are first and second IC chips operating on respective clocks in the system. A reflector extends around the light source and is shaped to reflect and focus the light emitted from the light source at an acceptable angle for entering the light source. The event is further classified according to the themes into one or more corresponding categories.