altogether whereby the fluorescence and phosphorescence spectra may be supplanted by a stimulated emission spectra in the instance where stimulation yields visible luminescence the luminescence spectra most likely will not exactly coincide with the fluorescence of phosphorescence spectra the result of stimulation in the multiphoton absorption process can then be said to be reduction or elimination in whole or in part of fluorescence and or phosphorescence spectra intensities and the emergence of a new spectra 34 color 34 of likely different intensity in the instance where stimulated emission yields internal conversion no luminescence is produced the result of stimulation in the multiphoton absorption process is the reduction or elimination of fluorescence or phosphorescence spectra intensities and no new spectra such a reduction of elimination of fluorescence of phosphorescence is referred to as 34 quenching 34 and preferably should yield a dramatic change in emission to serve as a reliable indicator of the presence of the inorganic phosphor it should be recognized that one or more levels of stimulation energy may be concurrently or consecutively acting through the multiphoton absorption process the usual example would be radiant versus conductive stimulation processes of imparting stimulation energy to a phosphor the conductive class.