E. Goldstein discovered positively charged radiations called canal rays in a gas discharge, which ultimately led to the discovery of another sub-atomic particle, the proton.
What did E. Goldstein discover in 1886, and how did it contribute to the understanding of atomic structure?
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In 1886, E. Goldstein discovered canal rays, positively charged ions that travel opposite to electrons in a discharge tube. This discovery contributed to the understanding of atomic structure by revealing the presence of positively charged particles later identified as protons within atoms.