For noncentrosymmetric crystal structures, this phenomenon can occur when mechanical stress excites trapped nitrogen gas via generation of electric fields at fracture sites. Its efficiency can be enhanced by alkali halides, w
For noncentrosymmetric crystal structures, this phenomenon can occur when mechanical stress excites trapped nitrogen gas via generation of electric fields at fracture sites. Its efficiency can be enhanced by alkali halides, which serve as coactivators or fluxes, and the (*) sono- variety occurs when sound waves bombard gaseous bubbles in a liquid. It can be classified based on whether or not the electronic transition occurs between energy levels of different multiplicity. For 10 points, enzyme-catalyzed oxidation of a luciferin produces the bio form in fireflies of what phenomenon, the emission of light from a cold body, as opposed to incandescence.
For noncentrosymmetric crystal structures, this phenomenon can occur when mechanical stress excites trapped nitrogen gas via generation of electric fields at fracture sites.
{luminescence} [prompt on {fluorescence} or {phosphorescence}]