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• 17:29, 3 July 2025 Kkmurray talk contribs created page Aston 2022/Chapter 3 (Created page with "==CHAPTER III - POSITIVE RAYS== ===14. Nature of Positive Rays=== Positive rays were dis- covered by Goldstein in 1886 in electrical discharge at low pressure. In some experiments with a perforated cathode he noticed streamers of Hght behind the perforations. This luminosity, he assumed, was due to rays of some sort which travelled in the opposite direction to the cathode rays and so passed through the apertures i...")