The detector takes a “snap-shot” of the scattering pattern. Obviously thissnap-shot will only capture the scattering pattern from the particles thatwhere passing through the analyser beam at that particular time. Takingonly one snap-shot may not give you a representative reading of thescattering pattern. To overcome this the Mastersizer takes many snap-shots(known as sweeps) and averages the result. Typically over 2000 sweeps aremade for each measurement, with each sweep taking 2mS.
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