{"id":438189,"date":"2017-08-02T02:00:00","date_gmt":"2017-08-01T23:00:00","guid":{"rendered":"http:\/\/www.fyysika.ee\/?guid=763227eaa51e32b63a47404671200683"},"modified":"2017-08-02T02:00:00","modified_gmt":"2017-08-01T23:00:00","slug":"just-how-much-do-the-planets-affect-the-tides","status":"publish","type":"post","link":"https:\/\/www.fyysika.ee\/?p=438189","title":{"rendered":"Just how much do the planets affect the tides?"},"content":{"rendered":"<p>The influence of the planets, and planetary alignment on the Earth\u2019s tides is addressed. Starting<br \/>\nfrom Newton\u2019s law of gravitation, the tidal influence of any celestial body is expressed in terms of<br \/>\nits apparent size and its density. From this, planetary alignment can be seen to contribute at most<br \/>\ntenths of a millimetre to a tide and so is unlikely to be a significant contributor to exceptional<br \/>\ntidal events. The likely causes of extreme tidal events are outlined: when the Sun and Moon are each<br \/>\nclosest to Earth, equinox, and weather\u2014in particular extreme air pressure, rainfall, and wind. We<br \/>\nconclude with the long-term influence of the planets on the Earth\u2019s orbit and thus on the Sun\u2019s<br \/>\ntidal effect (with timescales of the order of 100\u2009000 years), and planetary influence on the Moon\u2019s<br \/>\norbit.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The influence of the planets, and planetary alignment on the Earth\u2019s tides is addressed. Starting<br \/>\nfrom Newton\u2019s law of gravitation, the tidal influence of any celestial body is expressed in terms of<br \/>\nits apparent size and its density. From this, p&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_genesis_hide_title":false,"_genesis_hide_breadcrumbs":false,"_genesis_hide_singular_image":false,"_genesis_hide_footer_widgets":false,"_genesis_custom_body_class":"","_genesis_custom_post_class":"","_genesis_layout":"","footnotes":""},"categories":[178],"tags":[],"class_list":{"0":"post-438189","1":"post","2":"type-post","3":"status-publish","4":"format-standard","6":"category-rss-fuusikaharidus","7":"entry"},"_links":{"self":[{"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=\/wp\/v2\/posts\/438189","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=438189"}],"version-history":[{"count":0,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=\/wp\/v2\/posts\/438189\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=438189"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=438189"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=438189"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}