Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light

Introduced: January 1980

Last revised: January 2006

Full Title

Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light > Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light

Classification Context

Section:: PHYSICS
Class:: MEASURING; TESTING
Subclass:: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES

4 direct subcodes

Child Classifications

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G01N 21/63 optically excited
G01N 21/66 electrically excited, e.g. electroluminescence
G01N 21/7 mechanically excited, e.g. triboluminescence
G01N 21/71 thermally excited