G - Physics – 01 – N
Patent
G - Physics
01
N
73/52
G01N 21/00 (2006.01) G01N 21/17 (2006.01) G01R 15/24 (2006.01)
Patent
CA 1173265
ABSTRACT OF THE DISCLOSURE A photothermal measurement cell for study of light absorption by a sample substance. The sample substance is placed in contact with a temperature expansion element of a solid material, for example quartz, glass or sapphire. The element is arranged in contact with a mechanoelectric or mechanooptical transducer, for example a piezoelectric crystal. As the light is absorbed by the sample substance its tempera- ture is raised, whereupon the temperature expansion element expands and its mechanical motion is transformed to an electric signal by the transducer, whereupon the signal is amplified and registered for example by an X-Y recorder.
387284
Helander Per
Lundstrom Ingemar
Mcqueen Douglas
Helander Per
Lundstrom Ingemar
Marks & Clerk
Mcqueen Douglas
LandOfFree
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