phosphorograph
/ˈfɒsf(ə)rə(ʊ)ɡrɑːf/ /ˈfɒsf(ə)rə(ʊ)ɡraf/Now rare
noun
An image, especially of a spectrum, made on a phosphorescent surface by illumination with infrared or other radiation.
Origin
Late 19th century; earliest use found in John William Draper (1811–1882), chemist and historian. From phosphoro- + -graph.