Publisher's Synopsis
Excerpt from On the Spectroscopic Examination of Positive Rays Isolated by Transmission Through Thin Partitions
Hie canal rays were discovered by Goldstein in 1886, and T through the researches of W. Wien in 1898, and later of Sir I. J. Thomson, their identity with the positive ions was definitely established. They have been' frequently employed since as a source of positive ions for investigation of the properties of positive electricity.
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