Halogen compunds coating fluorescent lamps phosphoresce to produce light in response to electric discharges inside the lamp (see electric discharge lamp).
Other findings may include vitreous cell, a granularity of the fovea, retinal vascular sheathing, early hyperfluorescence of the white dots with some late staining.
Erbium ions concentration is obtained by the information of measured coefficients along with modeling of double-pass backward (DPB) superfluorescent fiber source (SFS).
Another phenomenon, still more strikingly modern, was a package of lucifer matches, which, in old times, would have been thought actually to borrow their instantaneous flame from the nether fires of Tophet.