| http://www.w3.org/ns/prov#value | - The design of the laser-optical method for measuring the degree of dispersion in flowing systems is further improved, in accordance with the invention, if the photodetector is operated in a clamping circuit which provides a D.C. voltage/current reference value on the basis of which the fluctuations are standardized, if the laser used is an integrated semiconductor laser and the laser light is pass
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