{"id":897,"date":"2019-09-18T12:45:42","date_gmt":"2019-09-18T10:45:42","guid":{"rendered":"https:\/\/www.festivalvedy.sk\/wp2\/odkryvame-neviditelne\/"},"modified":"2019-09-18T12:45:42","modified_gmt":"2019-09-18T10:45:42","slug":"odkryvame-neviditelne","status":"publish","type":"post","link":"https:\/\/www.festivalvedy.sk\/wp2\/odkryvame-neviditelne\/","title":{"rendered":"Odkr\u00fdvame nevidite\u013en\u00e9"},"content":{"rendered":"<p>Autor\/autori: Matej \u010cerve\u0148  <\/p>\n<p>Je v\u0161eobecne zn\u00e1me, \u017ee elektrina sa \u0161\u00edri \u010dasticami naz\u00fdvan\u00fdmi elektr\u00f3ny. V minulosti ale nemali fyzici na ot\u00e1zku, \u010d\u00edm sa \u0161\u00edri elektrina jednozna\u010dn\u00fa odpove\u010f. Jednozna\u010dn\u00fa odpove\u010f na t\u00fato ot\u00e1zku dal a\u017e J. J. Thomson. Thompson pri\u0161iel na to, \u017ee elektrick\u00fd pr\u00fad sa \u0161\u00edri z\u00e1porne nabit\u00fdmi \u010dasticami, ktor\u00e9 boli nesk\u00f4r nazvan\u00e9 elektr\u00f3ny. \u00da\u010delom n\u00e1\u0161ho projektu bolo popul\u00e1rnou formou uk\u00e1za\u0165, \u017ee elektr\u00f3ny maj\u00fa z\u00e1porn\u00fd n\u00e1boj. Zostrojili sme z materi\u00e1lov, ktor\u00e9 s\u00fa be\u017ene dostupn\u00e9 v dom\u00e1cnosti v\u00e1kuov\u00fa trubicu, z ktorej sme pomocou v\u00fdvevy vy\u010derpali vzduch. Cez trubicu sme viedli jednosmern\u00fd elektrick\u00fd pr\u00fad. N\u00e1sledne sa v trubici objavilo kat\u00f3dov\u00e9 \u017eiarenie. Kat\u00f3dov\u00e9 \u017eiarenie je pr\u00fad ur\u00fdchlen\u00fdch elektr\u00f3nov. \u017diarenie malo fialov\u00e9 farbu, \u010do bolo zapr\u00ed\u010dinen\u00e9 t\u00fdm, \u017ee vo f\u013ea\u0161i nebolo dokonal\u00e9 v\u00e1kuum a nach\u00e1dzali sa tam at\u00f3my vod\u00edku a dus\u00edku. K tomuto kat\u00f3dov\u00e9mu \u017eiareniu sme n\u00e1sledne prilo\u017eili vodi\u010d, ktor\u00fd viedol elektrick\u00e9 pole. . \u017diarenie sa vych\u00fdlilo na stranu, \u010d\u00edm sme dok\u00e1zali, \u017ee \u017eiarenie m\u00e1 n\u00e1boj.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Autor\/autori: Matej \u010cerve\u0148 Je v\u0161eobecne zn\u00e1me, \u017ee elektrina sa \u0161\u00edri \u010dasticami naz\u00fdvan\u00fdmi elektr\u00f3ny. V minulosti ale nemali fyzici na ot\u00e1zku, \u010d\u00edm sa \u0161\u00edri elektrina jednozna\u010dn\u00fa odpove\u010f. Jednozna\u010dn\u00fa odpove\u010f na t\u00fato ot\u00e1zku dal a\u017e J. J. Thomson. Thompson pri\u0161iel na to, \u017ee elektrick\u00fd pr\u00fad sa \u0161\u00edri z\u00e1porne nabit\u00fdmi \u010dasticami, ktor\u00e9 boli nesk\u00f4r nazvan\u00e9 elektr\u00f3ny. \u00da\u010delom n\u00e1\u0161ho [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"_uf_show_specific_survey":0,"_uf_disable_surveys":false,"footnotes":""},"categories":[6,14],"tags":[8,15],"class_list":["post-897","post","type-post","status-publish","format-standard","hentry","category-6","category-fyzika-a-astronomia","tag-8","tag-fyzika-a-astronomia"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Odkr\u00fdvame nevidite\u013en\u00e9 - Festival vedy a techniky AMAVET<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.festivalvedy.sk\/wp2\/odkryvame-neviditelne\/\" \/>\n<meta property=\"og:locale\" content=\"sk_SK\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Odkr\u00fdvame nevidite\u013en\u00e9 - Festival vedy a techniky AMAVET\" \/>\n<meta property=\"og:description\" content=\"Autor\/autori: Matej \u010cerve\u0148 Je v\u0161eobecne zn\u00e1me, \u017ee elektrina sa \u0161\u00edri \u010dasticami naz\u00fdvan\u00fdmi elektr\u00f3ny. 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