The molecules in turn transfer their energy to the fluors.

While the base does fluoresce in the presence of ionizing radiation, its low yield and negligible transparency to its own emission make the use of fluors necessary in the construction of a practical scintillator.

There are many fluorescent reported molecules, called fluorophores or fluorochromes such as fluorescein, Alexa Fluors or DyLight 488, which can be chemically linked to a different molecule which binds the target of interest within the sample.

Fluorophores, or simply "fluors", are typically attached to an antibody that recognises a target feature on or in the cell; they may also be attached to a chemical entity with affinity for the cell membrane or another cellular structure.

On 12 April 1964, a group of 14 world-class skiers triggered led by Bogner at the shooting of a ski movie produced by him in the Engadine Val Selin below Trais Fluors an avalanche, where the air pressure caused the departure of a second avalanche on the opposite slope.

Fluorescent reporters are small, organic molecules used for IHC detection and traditionally include FITC, TRITC and AMCA, while commercial derivatives, including the Alexa Fluors and Dylight Fluors, show similar enhanced performance but vary in price.