Separation of Particulate Materials into Size-Ranges

Abstract

DURING an experiment a beaker was used for collecting a stream of small glass spheres issuing from a chute. A number of the spheres escaped over the edge of the beaker, after rebounding from the layer of material in the bottom, and on examination this fraction was observed to be of considerably more uniform size than the original sample; an observation which suggests a simple method for the separation of non-cohesive particulate materials into sized fractions.

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