Wien, Wilhelm (1864–1928)
While studying streams of ionized gas, in 1898, Wien laid the foundation of mass spectroscopy and identified a positive particle equal in mass to the hydrogen atom. J. J. Thomson refined Wien's apparatus and conducted further experiments in 1913. After work by Ernest Rutherford in 1919, Wien's particle was accepted and named the proton. Wien also made important contributions to the study of cathode rays, X-rays, and "canal" rays.
Related category• PHYSICISTS
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