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| photodromy (in the induced or spontaneous clarification of certain suspensions, the settlement of particles on the side nearest the light [positive photodromy] or on the dark side [negative photodromy]) | |||
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| photodromy (in the induced or spontaneous clarification of certain suspensions, the settlement of particles on the side nearest the light [positive photodromy] or on the dark side [negative photodromy]) | |||