20 April 1902: Marie and Pierre Curie proved the existence of radium by isolating radium chloride 5th April 2018 https://www.historypod.net/wp-content/uploads/2018/04/04-20-Marie-and-Pierre-Curie-chemically-isolated-pure-radium-chloride.mp3 “20 April 1902: Marie and Pierre Curie proved the existence of radium by isolating radium chloride” from HistoryPod.net by HistoryPod.net.
14th January 1973: Elvis Presley makes the first solo headline satellite broadcast in Aloha From Hawaii 14th January 2021
13th January 1910: First public radio broadcast features a live performance from the Metropolitan Opera House in New York 13th January 2021
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