{"id":112,"date":"2013-10-21T14:49:37","date_gmt":"2013-10-21T14:49:37","guid":{"rendered":"http:\/\/furnessu3a.org\/groups\/worldhistory\/?p=112"},"modified":"2021-07-16T20:50:42","modified_gmt":"2021-07-16T20:50:42","slug":"oct-21st-the-first-real-incandescent-lamp","status":"publish","type":"post","link":"https:\/\/furnessu3a.org\/worldhistory\/2013\/10\/21\/oct-21st-the-first-real-incandescent-lamp\/","title":{"rendered":"Oct 21st: the first real incandescent lamp"},"content":{"rendered":"<p><img loading=\"lazy\" decoding=\"async\" class=\"alignleft\" src=\"http:\/\/upload.wikimedia.org\/wikipedia\/commons\/thumb\/9\/9d\/Thomas_Edison2.jpg\/375px-Thomas_Edison2.jpg\" alt=\"\" width=\"281\" height=\"360\" \/>In 1879, Thomas Edison (left) managed to produce the first usable incandescent electric light bulb. He did this on the back of patents he had purchased some years earlier from Henry Woodward and Matthew Evans, whose patent for the invention had been granted in 1875. What Edison managed to do was to create a filament that would burn for longer: 40 hours or so in its initial form. A year later he had a lightbulb that would last for 1200 hours. The growth in usage was initially slow, as with many such technologies: in 1885, around 300,000 light bulbs were in use, and by 1914, the US had around 85 million lamp sockets.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In 1879, Thomas Edison (left) managed to produce the first usable incandescent electric light bulb. He did this on the back of patents he had purchased some years earlier from Henry Woodward and Matthew Evans, whose patent for the invention had been granted in 1875. What Edison managed to do was to create a filament &hellip; <a href=\"https:\/\/furnessu3a.org\/worldhistory\/2013\/10\/21\/oct-21st-the-first-real-incandescent-lamp\/\" class=\"more-link\">Continue reading <span class=\"screen-reader-text\">Oct 21st: the first real incandescent lamp<\/span> <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_editorskit_title_hidden":false,"_editorskit_reading_time":1,"_editorskit_is_block_options_detached":false,"_editorskit_block_options_position":"{}","footnotes":""},"categories":[1],"tags":[],"class_list":["post-112","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/furnessu3a.org\/worldhistory\/wp-json\/wp\/v2\/posts\/112","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/furnessu3a.org\/worldhistory\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/furnessu3a.org\/worldhistory\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/furnessu3a.org\/worldhistory\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/furnessu3a.org\/worldhistory\/wp-json\/wp\/v2\/comments?post=112"}],"version-history":[{"count":1,"href":"https:\/\/furnessu3a.org\/worldhistory\/wp-json\/wp\/v2\/posts\/112\/revisions"}],"predecessor-version":[{"id":930,"href":"https:\/\/furnessu3a.org\/worldhistory\/wp-json\/wp\/v2\/posts\/112\/revisions\/930"}],"wp:attachment":[{"href":"https:\/\/furnessu3a.org\/worldhistory\/wp-json\/wp\/v2\/media?parent=112"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/furnessu3a.org\/worldhistory\/wp-json\/wp\/v2\/categories?post=112"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/furnessu3a.org\/worldhistory\/wp-json\/wp\/v2\/tags?post=112"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}