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Publication of FR659880ApublicationCriticalpatent/FR659880A/fr
G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
G01N21/71—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light thermally excited
G01N21/72—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light thermally excited using flame burners
FR659880D1927-12-231927-12-23Procédé et dispositif pour la détermination de la proportion de gaz ou de vapeursinflammables viciant une enceinte
ExpiredFR659880A
(fr)