A method for determining the temperature of a fluid particularly adapted to the determination of droplet temperatures. A fluorescent monomer and a quencher are added to a fluid and the monomer is excited by directing an energy source of a proper wavelength at the fluid. The excited monomer then combines...http://www.google.de/patents/US4613237?utm_source=gb-gplus-sharePatent US4613237 - Method for determining the temperature of a fluid