{"id":621841,"date":"2026-01-18T21:05:55","date_gmt":"2026-01-18T20:05:55","guid":{"rendered":"https:\/\/cronologia-universale.it\/early-20th-century-3\/"},"modified":"2026-01-18T21:05:55","modified_gmt":"2026-01-18T20:05:55","slug":"1887-8","status":"publish","type":"post","link":"https:\/\/cronologia-universale.it\/en\/1887-8\/","title":{"rendered":"1887"},"content":{"rendered":"<p>Albert A. Michelson of the U.S. Naval Academy in Annapolis, Maryland, measured the speed of light (with what would later be called the Michelson Interferometer) with such precision that he could declare it constant despite the Earth&#8217;s motions (rotation and revolution). The Michelson-Morley experiment thus proved that the aether does not exist and paved the way for Albert Einstein&#8217;s theory of relativity.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Albert A. Michelson of the U.S. Naval Academy in Annapolis, Maryland, measured the speed of&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[41],"tags":[],"class_list":["post-621841","post","type-post","status-publish","format-standard","hentry","category-s-en"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.0 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>1887 - Cronologia Universale<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/cronologia-universale.it\/en\/1887-8\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"1887 - Cronologia Universale\" \/>\n<meta property=\"og:description\" content=\"Albert A. 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