The research of sifting theory of grain sorter (VII)

about the uncommon phenomena in sifting mechanism. (No. 1)

Abstract

Up to the 6th report, I treated of the theoretical treatment or ordinary sifting mechanism.
From the 7th report, I intend to report the uncommon phenomenon which I can not explain by my sifting theory.
In this report, I should like to explain the result of experiments.