{"id":5132,"date":"2024-08-11T08:57:37","date_gmt":"2024-08-11T08:57:37","guid":{"rendered":"https:\/\/www.betrisey.ch\/3580-2"},"modified":"2025-01-28T06:36:45","modified_gmt":"2025-01-28T06:36:45","slug":"3580-2","status":"publish","type":"page","link":"https:\/\/www.betrisey.ch\/en\/3580-2","title":{"rendered":"Foucault 25: technique"},"content":{"rendered":"\n\n

<\/p>\n\n\n\n\n\n

Trial no. 1.<\/strong>(9th August 2024) <\/strong><\/p>\n\n\n\n\n\n

First tests before adjustments: the pendulum is launched and turns the first time in the right direction.<\/p>\n\n\n\n\n\n

Connection of a clock measuring device (MicroSet)<\/p>\n\n\n\n\n\n

First adjustments to the height of the pendulum, the time to be achieved being one second per beat. First data recorded:<\/p>\n\n\n\n\n\n

\"\"<\/figure>\n\n\n\n\n\n

…where we can see that it lags by 2.6 seconds per day after 1.4 days, The two peaks we can see mark a half-rotation of the pendulum completed in 19 hours, i.e. a full rotation in 38 hours (instead of 33.26 hours at my latitude: 12% slower than it should be!!!)<\/p>\n\n\n\n\n\n

This graph is recurrent: it’s the signature of my pendulum in its current state. These same curves will always repeat themselves.<\/p>\n\n\n\n\n\n

You can also see that it’s unstable and that anything can upset it. I think this is due to the bronze Charron ring with Foucault brake underneath.<\/p>\n\n\n\n

\n\n
\"\"<\/figure>\n<\/div>\n\n\n\n\n

August 2024: A break from current experiments because I’m working on the MicroFoucault<\/a>, which is taking up all my time and my measuring equipment. I’ll start again as soon as it’s finished.<\/p>\n\n\n\n\n\n

<\/p>\n\n","protected":false},"excerpt":{"rendered":"

Trial no. 1.(9th August 2024) First tests before adjustments: the pendulum is launched and turns the first time in the right direction. Connection of a clock measuring device (MicroSet) First adjustments to the height of the pendulum, the time to be achieved being one second per beat. First data recorded: …where we can see that […]<\/p>\n","protected":false},"author":2,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"footnotes":""},"class_list":["post-5132","page","type-page","status-publish","hentry"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.betrisey.ch\/en\/wp-json\/wp\/v2\/pages\/5132","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.betrisey.ch\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.betrisey.ch\/en\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.betrisey.ch\/en\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.betrisey.ch\/en\/wp-json\/wp\/v2\/comments?post=5132"}],"version-history":[{"count":1,"href":"https:\/\/www.betrisey.ch\/en\/wp-json\/wp\/v2\/pages\/5132\/revisions"}],"predecessor-version":[{"id":5133,"href":"https:\/\/www.betrisey.ch\/en\/wp-json\/wp\/v2\/pages\/5132\/revisions\/5133"}],"wp:attachment":[{"href":"https:\/\/www.betrisey.ch\/en\/wp-json\/wp\/v2\/media?parent=5132"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}