{"id":1417,"date":"2019-07-15T12:08:13","date_gmt":"2019-07-15T12:08:13","guid":{"rendered":"http:\/\/meumon.synology.me\/museu\/?p=1417"},"modified":"2022-04-08T11:06:48","modified_gmt":"2022-04-08T11:06:48","slug":"triangulacio","status":"publish","type":"post","link":"http:\/\/meumon.synology.me\/museu\/triangulacio\/","title":{"rendered":"Triangulaci\u00f3. 1533"},"content":{"rendered":"<p>Gemma Frisius ho propos\u00e0 el 1533 i Jacob van Deventer comen\u00e7\u00e0 a fer-ne un \u00fas sistem\u00e0tic.<\/p>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"alignnone size-large\" src=\"https:\/\/upload.wikimedia.org\/wikipedia\/commons\/thumb\/8\/8e\/Triangulation-boat.png\/310px-Triangulation-boat.png\" width=\"310\" height=\"220\" \/><\/p>\n<p>d = \u2113 \u00a0 sin \u2061 \u03b1 sin \u2061 \u03b2 \/ sin \u2061 ( \u03b1 + \u03b2 )<\/p>\n<p>Amba una xarxa de triangles <a title=\"Willebrord Snellius\" href=\"https:\/\/en.wikipedia.org\/wiki\/Willebrord_Snellius\">Willebrord Snell<\/a>, el 1615 va estimar la dist\u00e0ncia entre\u00a0 Alkmaar i Breda en 116 km fent servir una cadena de quadrangles contenint 33 triangles.<\/p>\n<p>Amb instruments de precisi\u00f3 com els teodolits i una xarxa de<a href=\"https:\/\/ca.wikipedia.org\/wiki\/V%C3%A8rtex_geod%C3%A8sic\"> v\u00e8rtexs geod\u00e8sics<\/a> es podr\u00e0 cartografiar amb detall. La xarxa espanyola de v\u00e8rtexs geod\u00e8sics es divideix en tres categories: de primer, de segon i de tercer ordre. La de primer ordre est\u00e0 formada per triangles de costats entre 30 i 70 quil\u00f2metres. En la de segon ordre, recolzada en la de primer ordre, els costats dels triangles varien entre els 10 i els 25 quil\u00f2metres. La xarxa de tercer ordre t\u00e9 costats de 5 a 10 quil\u00f2metres. Tots els v\u00e8rtexs de les xarxes m\u00e9s grans s\u00f3n al seu torn v\u00e8rtexs de les m\u00e9s petites.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Gemma Frisius ho propos\u00e0 el 1533 i Jacob van Deventer comen\u00e7\u00e0 a fer-ne un \u00fas sistem\u00e0tic. d = \u2113 \u00a0 sin \u2061 \u03b1 sin \u2061 \u03b2 \/ sin \u2061 ( \u03b1 + \u03b2 ) Amba una xarxa de triangles Willebrord Snell, el 1615 va estimar la dist\u00e0ncia entre\u00a0 Alkmaar i Breda en 116 km fent &hellip; <\/p>\n<p class=\"link-more\"><a href=\"http:\/\/meumon.synology.me\/museu\/triangulacio\/\" class=\"more-link\">Continue reading<span class=\"screen-reader-text\"> &#8220;Triangulaci\u00f3. 1533&#8221;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[173],"tags":[361],"anotacio":[],"civilitzacio":[],"spec":[],"aspecies":[],"Tema poesia":[],"_links":{"self":[{"href":"http:\/\/meumon.synology.me\/museu\/wp-json\/wp\/v2\/posts\/1417"}],"collection":[{"href":"http:\/\/meumon.synology.me\/museu\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/meumon.synology.me\/museu\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/meumon.synology.me\/museu\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/meumon.synology.me\/museu\/wp-json\/wp\/v2\/comments?post=1417"}],"version-history":[{"count":0,"href":"http:\/\/meumon.synology.me\/museu\/wp-json\/wp\/v2\/posts\/1417\/revisions"}],"wp:attachment":[{"href":"http:\/\/meumon.synology.me\/museu\/wp-json\/wp\/v2\/media?parent=1417"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/meumon.synology.me\/museu\/wp-json\/wp\/v2\/categories?post=1417"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/meumon.synology.me\/museu\/wp-json\/wp\/v2\/tags?post=1417"},{"taxonomy":"anotacio","embeddable":true,"href":"http:\/\/meumon.synology.me\/museu\/wp-json\/wp\/v2\/anotacio?post=1417"},{"taxonomy":"civilitzacio","embeddable":true,"href":"http:\/\/meumon.synology.me\/museu\/wp-json\/wp\/v2\/civilitzacio?post=1417"},{"taxonomy":"spec","embeddable":true,"href":"http:\/\/meumon.synology.me\/museu\/wp-json\/wp\/v2\/spec?post=1417"},{"taxonomy":"aspecies","embeddable":true,"href":"http:\/\/meumon.synology.me\/museu\/wp-json\/wp\/v2\/aspecies?post=1417"},{"taxonomy":"Tema poesia","embeddable":true,"href":"http:\/\/meumon.synology.me\/museu\/wp-json\/wp\/v2\/Tema poesia?post=1417"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}