On the technique of the counter controlled cloud chamber

Abstract

The method by which very fast atomic particles are made to take their own could photographs has proved very useful for the investigation of cosmic rays. A short account of the method and a detailed account of the results obtained by its use have already been given by Blackett and Occhialini. Recently Locher and also Anderson, Millikan, Neddermeyer, and Pickering have used the same method and have obtained some beautiful results.