{"id":214,"date":"2020-02-21T15:13:26","date_gmt":"2020-02-21T14:13:26","guid":{"rendered":"https:\/\/www.liceoalessandrovolta.edu.it\/measurement\/?page_id=214"},"modified":"2020-02-21T15:14:34","modified_gmt":"2020-02-21T14:14:34","slug":"7-macchina-di-wimshurst","status":"publish","type":"page","link":"https:\/\/www.liceoalessandrovolta.edu.it\/measurement\/7-macchina-di-wimshurst\/","title":{"rendered":"17.   Macchina di Wimshurst"},"content":{"rendered":"\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"265\" height=\"300\" src=\"https:\/\/www.liceoalessandrovolta.edu.it\/measurement\/wp-content\/uploads\/2020\/02\/20191028_114629-265x300.jpg\" alt=\"\" class=\"wp-image-215\" srcset=\"https:\/\/www.liceoalessandrovolta.edu.it\/measurement\/wp-content\/uploads\/2020\/02\/20191028_114629-265x300.jpg 265w, https:\/\/www.liceoalessandrovolta.edu.it\/measurement\/wp-content\/uploads\/2020\/02\/20191028_114629-768x870.jpg 768w, https:\/\/www.liceoalessandrovolta.edu.it\/measurement\/wp-content\/uploads\/2020\/02\/20191028_114629-904x1024.jpg 904w\" sizes=\"(max-width: 265px) 100vw, 265px\" \/><\/figure>\n\n\n\n<p><strong>IT <\/strong>&#8211; La macchina di Wimshurst \u00e8 un generatore elettrostatico, sviluppato nel 1889 dall&#8217;ingegnere&nbsp;inglese <a href=\"https:\/\/it.wikipedia.org\/wiki\/James_Wimshurst\">James Wimshurst<\/a>,&nbsp; in grado di produrre un\u2019elevata differenza di potenziale. Essa \u00e8 costituita da due dischi isolanti disposti verticalmente, coassiali, ruotanti in senso opposto. Ogni disco presenta radialmente, in prossimit\u00e0 del bordo, una serie di settori metallici, che si caricano per induzione. Da entrambi i lati, si trovano due conduttori isolati, terminanti ciascuno con un pettine. Le cariche raccolte, per strofinio, dai pettini sono accumulate all&#8217;interno di&nbsp;due <a href=\"https:\/\/it.wikipedia.org\/wiki\/Bottiglia_di_Leida\">bottiglie di Leida<\/a>&nbsp;(condensatori). Quando i condensatori hanno immagazzinato una quantit\u00e0 sufficiente di carica elettrica, l&#8217;elevata&nbsp;<a href=\"https:\/\/it.wikipedia.org\/wiki\/Tensione_elettrica\">differenza di potenziale<\/a>&nbsp;tra i poli della macchina fa scoccare una&nbsp;<a href=\"https:\/\/it.wikipedia.org\/wiki\/Scintilla\">scintilla<\/a>, che pu\u00f2 raggiungere alcune centinaia di migliaia di Volt.&nbsp; <\/p>\n\n\n\n<p><strong>GB <\/strong>&#8211;<strong>\u00a0\u00a0 <\/strong>Wimshurst machine<strong> <\/strong>&#8211; The Wimshurst machine is an electrostatic generator, developed in 1889 by the English engineer James Wimshurst, capable of producing a high difference in potential. It consists of two insulating discs arranged vertically, coaxial, rotating in the opposite direction. Each disc radially presents, near the edge, a series of metal sectors, which are charged by induction. On both sides, there are two insulated conductors, each ending with a comb. The charges collected, by rubbing, from the combs are accumulated inside two bottles of Leida (capacitors). When the capacitors have stored a sufficient amount of electric charge, the high potential difference between the poles of the machine causes a spark to strike, which can reach several hundred thousand Volts. <\/p>\n","protected":false},"excerpt":{"rendered":"<p>IT &#8211; La macchina di Wimshurst \u00e8 un generatore elettrostatico, sviluppato nel 1889 dall&#8217;ingegnere&nbsp;inglese James Wimshurst,&nbsp; in grado di produrre un\u2019elevata differenza di potenziale. Essa \u00e8 costituita da due dischi&hellip;<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"_links":{"self":[{"href":"https:\/\/www.liceoalessandrovolta.edu.it\/measurement\/wp-json\/wp\/v2\/pages\/214"}],"collection":[{"href":"https:\/\/www.liceoalessandrovolta.edu.it\/measurement\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.liceoalessandrovolta.edu.it\/measurement\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.liceoalessandrovolta.edu.it\/measurement\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.liceoalessandrovolta.edu.it\/measurement\/wp-json\/wp\/v2\/comments?post=214"}],"version-history":[{"count":3,"href":"https:\/\/www.liceoalessandrovolta.edu.it\/measurement\/wp-json\/wp\/v2\/pages\/214\/revisions"}],"predecessor-version":[{"id":220,"href":"https:\/\/www.liceoalessandrovolta.edu.it\/measurement\/wp-json\/wp\/v2\/pages\/214\/revisions\/220"}],"wp:attachment":[{"href":"https:\/\/www.liceoalessandrovolta.edu.it\/measurement\/wp-json\/wp\/v2\/media?parent=214"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}