{"id":272,"date":"2020-02-21T18:05:06","date_gmt":"2020-02-21T17:05:06","guid":{"rendered":"https:\/\/www.liceoalessandrovolta.edu.it\/measurement\/?page_id=272"},"modified":"2020-02-21T18:05:06","modified_gmt":"2020-02-21T17:05:06","slug":"27-tubo-di-goldstein","status":"publish","type":"page","link":"https:\/\/www.liceoalessandrovolta.edu.it\/measurement\/27-tubo-di-goldstein\/","title":{"rendered":"27.  Tubo di Goldstein"},"content":{"rendered":"\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"156\" height=\"300\" src=\"https:\/\/www.liceoalessandrovolta.edu.it\/measurement\/wp-content\/uploads\/2020\/02\/20200121_161026-156x300.jpg\" alt=\"\" class=\"wp-image-273\" srcset=\"https:\/\/www.liceoalessandrovolta.edu.it\/measurement\/wp-content\/uploads\/2020\/02\/20200121_161026-156x300.jpg 156w, https:\/\/www.liceoalessandrovolta.edu.it\/measurement\/wp-content\/uploads\/2020\/02\/20200121_161026-768x1477.jpg 768w, https:\/\/www.liceoalessandrovolta.edu.it\/measurement\/wp-content\/uploads\/2020\/02\/20200121_161026-532x1024.jpg 532w\" sizes=\"(max-width: 156px) 100vw, 156px\" \/><\/figure>\n\n\n\n<p><strong>IT <\/strong>&#8211; Questo tubo a vuoto, ideato nel 1888 dal fisico tedesco Eugen Goldstein, mise in evidenza l&#8217;esistenza delle particelle positive, cio\u00e8 dei protoni, visti come raggi luminosi che si muovevano dall&#8217;anodo verso il catodo, ossia in direzione opposta rispetto ai raggi catodici (elettroni). Esso \u00e8 costituito da un tubo di vetro, in cui si trova gas a bassissima pressione, munito di due elettrodi, il catodo perforato nella parte centrale e l\u2019anodo posto di fronte. I raggi anodici che si generano attraverso i fori furono chiamati dal Goldstein \u201craggi canale\u201d. <\/p>\n\n\n\n<p><strong>GB<\/strong>  &#8211; \u00a0\u00a0 Goldstein tube &#8211; This vacuum tube, conceived in 1888 by the German\nphysicist Eugen Goldstein, highlighted the existence of positive particles,\ni.e. protons, seen as light rays moving from the anode towards the cathode,\nthat is in the opposite direction from the cathode rays (electrons). It\nconsists of a glass tube, in which there is very low pressure gas, equipped\nwith two electrodes, the cathode perforated in the central part and the anode\nplaced in front. The anode rays generated through the holes were called\n&#8220;channel rays&#8221; by Goldstein.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>IT &#8211; Questo tubo a vuoto, ideato nel 1888 dal fisico tedesco Eugen Goldstein, mise in evidenza l&#8217;esistenza delle particelle positive, cio\u00e8 dei protoni, visti come raggi luminosi che si&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\/272"}],"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=272"}],"version-history":[{"count":1,"href":"https:\/\/www.liceoalessandrovolta.edu.it\/measurement\/wp-json\/wp\/v2\/pages\/272\/revisions"}],"predecessor-version":[{"id":275,"href":"https:\/\/www.liceoalessandrovolta.edu.it\/measurement\/wp-json\/wp\/v2\/pages\/272\/revisions\/275"}],"wp:attachment":[{"href":"https:\/\/www.liceoalessandrovolta.edu.it\/measurement\/wp-json\/wp\/v2\/media?parent=272"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}