{"id":3902,"date":"2022-04-07T10:10:22","date_gmt":"2022-04-07T08:10:22","guid":{"rendered":"http:\/\/www.zsvltava.cz\/fyzika\/?p=3902"},"modified":"2025-04-09T11:56:08","modified_gmt":"2025-04-09T09:56:08","slug":"10-prikladu-s-elektromagnetickym-vlnenim","status":"publish","type":"post","link":"https:\/\/www.zsvltava.cz\/fyzika\/?p=3902","title":{"rendered":"P\u0159\u00edklady s elektromagnetick\u00fdmi vlnami"},"content":{"rendered":"

Elektromagnetick\u00e9 vlny maj\u00ed r\u016fzn\u00e9 frekvence<\/a> a t\u00edm p\u00e1dem vlnov\u00e9 d\u00e9lky. Spole\u010dn\u00e9 maj\u00ed to, \u017ee se \u0161\u00ed\u0159\u00ed maxim\u00e1ln\u00ed mo\u017enou rychlost\u00ed – rychlost\u00ed sv\u011btla. Plat\u00ed, \u017ee:<\/p>\n

  <\/span>   <\/span>\"\[<\/p>\n

Kde c<\/em> je rychlost sv\u011btla = 3 . 108<\/sup> m\/s.<\/p>\n

23<\/sup> p\u0159\u00edklad\u016f<\/h2>\n
    \n
  1. Ur\u010di frekvenci diody d\u00e1lkov\u00e9ho ovlada\u010de pokud vyu\u017e\u00edv\u00e1 elektromagnetick\u00e9 vln\u011bn\u00ed s vlnovou d\u00e9lku 10 \u00b5m.<\/li>\n
  2. Zjisti kde je nejbli\u017e\u0161\u00ed televizn\u00ed vys\u00edla\u010d a jak dlouho putuje vlna k v\u00e1m dom\u016f?<\/li>\n
  3. Jakou vlnovou d\u00e9lku m\u00e1 Wi-Fi sign\u00e1l, pokud pracuje na frekvenci 2,4 GHz?<\/li>\n
  4. Jak se zm\u011bnily vlnov\u00e9 d\u00e9lky a frekvence WiFi 5 a WiFi 6? (\u010d\u00edslo ud\u00e1v\u00e1 frekvenci v GHz)<\/li>\n
  5. Jak\u00e1 je vlnov\u00e1 d\u00e9lka z\u00e1\u0159en\u00ed mikrovlnky, kter\u00e1 dostala n\u00e1zev podle d\u00e9lky elmag. vln, kter\u00e9 vyu\u017e\u00edv\u00e1?<\/li>\n
  6. Sv\u011bteln\u00fd rok je vzd\u00e1lenost, kterou sv\u011btlo ulet\u00ed za 1 rok. Kolik je to km?<\/li>\n
  7. Paprsek sv\u011btla let\u00ed od Slunce na Zemi p\u0159ibli\u017en\u011b 8 minut. Vzd\u00e1lenosti Zem\u011b od Slunce se \u0159\u00edk\u00e1 astronomick\u00e1 jednotka – AU. Ur\u010di jej\u00ed hodnotu.<\/li>\n
  8. Zjisti jak daleko od Zem\u011b se nach\u00e1z\u00ed Sonda Voyager<\/a>\n
      \n
    1. Jak dlouho potrv\u00e1 informaci, ne\u017e k n\u00e1m ze sondy doraz\u00ed?<\/li>\n
    2. Kolik je to AU?<\/li>\n
    3. Kolik je to sv\u011bteln\u00fdch rok\u016f?<\/li>\n<\/ol>\n<\/ol>\n","protected":false},"excerpt":{"rendered":"

      Elektromagnetick\u00e9 vlny maj\u00ed r\u016fzn\u00e9 frekvence a t\u00edm p\u00e1dem vlnov\u00e9 d\u00e9lky. Spole\u010dn\u00e9 maj\u00ed to, \u017ee se \u0161\u00ed\u0159\u00ed maxim\u00e1ln\u00ed mo\u017enou rychlost\u00ed – rychlost\u00ed sv\u011btla. Plat\u00ed, \u017ee:   …. <\/p>\n","protected":false},"author":1,"featured_media":4421,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[62,49],"tags":[],"class_list":["post-3902","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-elektromagnetismus","category-priklady-pro-9-rocnik"],"_links":{"self":[{"href":"https:\/\/www.zsvltava.cz\/fyzika\/index.php?rest_route=\/wp\/v2\/posts\/3902","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.zsvltava.cz\/fyzika\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.zsvltava.cz\/fyzika\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.zsvltava.cz\/fyzika\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.zsvltava.cz\/fyzika\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=3902"}],"version-history":[{"count":0,"href":"https:\/\/www.zsvltava.cz\/fyzika\/index.php?rest_route=\/wp\/v2\/posts\/3902\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.zsvltava.cz\/fyzika\/index.php?rest_route=\/wp\/v2\/media\/4421"}],"wp:attachment":[{"href":"https:\/\/www.zsvltava.cz\/fyzika\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=3902"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.zsvltava.cz\/fyzika\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=3902"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.zsvltava.cz\/fyzika\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=3902"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}