Method and means for analyzing substances by photoacoustic...

Details Method and means for analyzing substances by photoacoustic... Method and means for analyzing substances by photoacoustic...

G - Physics

01

N

349/35, 73/53, 7

G01N 21/01 (2006.01) G01N 21/17 (2006.01)

Patent

CA 1036383

ABSTRACT OF THE DISCLOSURE In the method and means disclosed, an energy source applies energy of varying magnitude, to a substance being tested, and in a sufficient amount to produce detectable variations in a surrounding fluid. The frequency of the energy is varied. A pickup in the vicinity of the sample responds to the detectable variations and produces electrical signals corresponding to the detected variations. A display indicates the intensity of the electrical signals at the different energy frequencies.

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