{"id":18,"date":"2019-12-15T23:20:16","date_gmt":"2019-12-15T23:20:16","guid":{"rendered":"https:\/\/www.bmumford.com\/clocks\/?page_id=18"},"modified":"2019-12-18T23:43:34","modified_gmt":"2019-12-18T23:43:34","slug":"em3","status":"publish","type":"page","link":"https:\/\/www.bmumford.com\/clocks\/emindex\/em3\/","title":{"rendered":"A Half Second EM Clock"},"content":{"rendered":"<p><img loading=\"lazy\" class=\"size-full wp-image-444 alignleft\" src=\"https:\/\/www.bmumford.com\/wp-content\/uploads\/2017\/12\/em3.jpg\" alt=\"\" width=\"273\" height=\"480\" border=\"1\" \/><\/p>\n<p>This clock is an original design of an electromagnetic clock. That is to say, it uses electromagnetism to keep the pendulum swinging. It is not a quartz clock, and keeps time (like antique clocks) by measuring the natural motion of the pendulum.<\/p>\n<p>The cover is made with an ebony frame and glass panels. The base is flame maple with ebony details. A drawer in the front holds the batteries and electrical components. The dial is painted metal with a center seconds hand. The pendulum rod is black painted wood, the bob is a polished brass disk 4&#8243; in diameter. A small permanent magnet below the bob interacts with the drive and sense coils inside the base. The dial and pendulum are supported by two 1\/2&#8243; rods of polished brass (the color of the bright brass does not come through very well in this picture). The clock is 20 inches tall, 9 inches wide, and has a half second pendulum.<\/p>\n<!-- No shortcodes are defined -->\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>This clock is an original design of an electromagnetic clock. That is to say, it uses electromagnetism to keep the pendulum swinging. It is not a quartz clock, and keeps time (like antique clocks) by measuring the natural motion of the pendulum. The cover is made with an ebony frame and glass panels. The base [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":2,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":""},"_links":{"self":[{"href":"https:\/\/www.bmumford.com\/clocks\/wp-json\/wp\/v2\/pages\/18"}],"collection":[{"href":"https:\/\/www.bmumford.com\/clocks\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.bmumford.com\/clocks\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.bmumford.com\/clocks\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.bmumford.com\/clocks\/wp-json\/wp\/v2\/comments?post=18"}],"version-history":[{"count":3,"href":"https:\/\/www.bmumford.com\/clocks\/wp-json\/wp\/v2\/pages\/18\/revisions"}],"predecessor-version":[{"id":189,"href":"https:\/\/www.bmumford.com\/clocks\/wp-json\/wp\/v2\/pages\/18\/revisions\/189"}],"up":[{"embeddable":true,"href":"https:\/\/www.bmumford.com\/clocks\/wp-json\/wp\/v2\/pages\/2"}],"wp:attachment":[{"href":"https:\/\/www.bmumford.com\/clocks\/wp-json\/wp\/v2\/media?parent=18"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}