Anode Ray
Anode rays (or canal rays) are beams of positive ions that are created by certain types of gas discharge tubes. They were first observed in Crookes tubes during experiments by the German scientist Eugen Goldstein, in 1886. Later work on anode rays by Wilhelm Wien and J. J. Thomson led to the development of mass spectrometry.
Read more about Anode Ray: Experiments
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“Our reason may prove what it will: our reason is only a feeble ray that has issued from Nature.”
—Maurice Maeterlinck (1862–1949)