TADF (“T A D F”) compounds undergoing this phenomenon are responsible for the high internal efficiency of organic devices first researched by Chihaya Adachi. This phenomenon's anisotropy (an-ICE-uh-trop-ee) is calculated from a ratio of intensity and the grating factor. TTA (“T T A”) was proposed to explain anthracene derivatives undergoing this phenomenon through a Dexter electron transfer. Similar to techniques such as STED (stehd), Stefan Hell's 4Pi microscope achieves ■END■