{"id":69133,"date":"2015-03-27T11:49:14","date_gmt":"2015-03-27T08:49:14","guid":{"rendered":"http:\/\/www.fyysika.ee\/?p=69133"},"modified":"2015-04-02T00:27:33","modified_gmt":"2015-04-01T21:27:33","slug":"ootamatu-vari","status":"publish","type":"post","link":"https:\/\/www.fyysika.ee\/?p=69133","title":{"rendered":"Ootamatu vari"},"content":{"rendered":"<div id=\"attachment_69180\" style=\"width: 259px\" class=\"wp-caption alignleft\"><a href=\"http:\/\/www.fyysika.ee\/wp-content\/uploads\/2015\/03\/gallery09_15.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-69180\" class=\"wp-image-69180 size-medium\" src=\"http:\/\/www.fyysika.ee\/wp-content\/uploads\/2015\/03\/gallery09_15-249x300.jpg\" alt=\"gallery09_15\" width=\"249\" height=\"300\" srcset=\"https:\/\/www.fyysika.ee\/wp-content\/uploads\/2015\/03\/gallery09_15-249x300.jpg 249w, https:\/\/www.fyysika.ee\/wp-content\/uploads\/2015\/03\/gallery09_15.jpg 522w\" sizes=\"auto, (max-width: 249px) 100vw, 249px\" \/><\/a><p id=\"caption-attachment-69180\" class=\"wp-caption-text\">Polariseeritud p\u00e4ikesevalgus tuleb l\u00e4bi akna tuppa, peegeldub p\u00f5randalt ja satub siis fotoaparaadi objektiivi. Miks n\u00e4ib akna vari p\u00f5randal v\u00e4rvilisena? Foto: Paulina Kuo<\/p><\/div>\n<p>Kuidas te seletaksite pildil n\u00e4ha olevat v\u00e4rvilist varju p\u00f5randal? Olete midagi analoogset kusagil n\u00e4inud? F\u00fc\u00fcsika tunnis v\u00f5i teadusteatris, kus r\u00e4\u00e4gitakse valguse polarisatsioonist? Sest valguse polarisatsioon on niisuguse v\u00e4rvide m\u00e4ngu juures v\u00f5tmes\u00f5naks.<\/p>\n<p>Kui kellelgi on l\u00e4inud meelest, mis selle polarisatsiooniga \u00f5igupoolest oli, siis p\u00f5hilise teadmise saab j\u00e4rele vaadata e-\u00f5pikust <a href=\"http:\/\/\u00f5pik.f\u00fc\u00fcsika.ee\/index.php\/book\/view\/15#genericSection1490\" target=\"_blank\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/www.fyysika.ee\/wp-content\/uploads\/2015\/02\/icon_eopik.png\" alt=\"icon_eopik\" width=\"22\" height=\"19\" \/><\/a>. Allpool on \u00fcks video selle kohta, kuidas polarisatsioon katses v\u00e4lja n\u00e4eb. Mustade raamide sees on polarisaatorid, mille polarisatsioonitasandid on \u00fcksteisega risti, nii et esimesest polarisaatorist l\u00e4bi l\u00e4inud valgus p\u00e4\u00e4seb l\u00e4bi teise polarisaatori vaid juhul, kui kahe polarisaatori vahel valguse polarisatsioon muutub. Muutust kutsutakse esile erinevate valgust l\u00e4bi laskvate objektidega.<\/p>\n<p>Videos k\u00f5ige viimane kahe polarisaatori vahele pandud objekt, CD plaadi \u00fcmbris, tekitab ekraanile \u00fcsna sarnase pildi, kui\u00a0 siin uuritaval pildil p\u00f5randalt n\u00e4ha. Eri v\u00e4rvi piirkondi seletatakse pingetega CD plaadi \u00fcmbrises &#8211; surve all plastik p\u00f6\u00f6rab valguse polarisatsiooni tasandit rohkem.<\/p>\n<p>Peab teadma veel kahte asja:<\/p>\n<ol>\n<li>Atmosf\u00e4\u00e4rist maale j\u00f5udev valgus on polariseeritud;<\/li>\n<li>Peegeldumisel valguse polarisatsioon muutub, teatud nurga all peegeldudes toimib peegeldumine nagu polarisaator.<\/li>\n<\/ol>\n<p>K\u00f5ik kokku:<\/p>\n<p>Kui aknaklaasile langeb polariseeritud valgus ning peegeldumine p\u00f5randalt toimib kui polarisaator, mille polarisatsioonitasand on risti aknaklaasile langenud valguse polarisatsioonitasandiga, siis on tegemist sellesama eksperimendiga, mis allpool videos. Ja v\u00e4rvililised piirkonnad on seletatavad pingetega aknaklaasis.<\/p>\n<p>M\u00f5elge n\u00fc\u00fcd v\u00e4lja v\u00e4hemalt kolm polarisatsioonikatset, millega saab sellist seletust kontrollida &#8230;<\/p>\n<p><iframe loading=\"lazy\" src=\"https:\/\/www.youtube.com\/embed\/R2chYf4_RBE\" width=\"560\" height=\"315\" frameborder=\"0\" allowfullscreen=\"allowfullscreen\"><\/iframe><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Kuidas te seletaksite pildil n\u00e4ha olevat v\u00e4rvilist varju p\u00f5randal? Olete midagi analoogset kusagil n\u00e4inud? F\u00fc\u00fcsika tunnis v\u00f5i teadusteatris, kus r\u00e4\u00e4gitakse valguse polarisatsioonist? Sest valguse polarisatsioon on niisuguse v\u00e4rvide m\u00e4ngu juures v\u00f5tmes\u00f5naks. Kui kellelgi on l\u00e4inud meelest, mis selle polarisatsiooniga \u00f5igupoolest oli, siis p\u00f5hilise teadmise saab j\u00e4rele vaadata e-\u00f5pikust . Allpool on \u00fcks video selle kohta, [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":69180,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_genesis_hide_title":false,"_genesis_hide_breadcrumbs":false,"_genesis_hide_singular_image":false,"_genesis_hide_footer_widgets":false,"_genesis_custom_body_class":"","_genesis_custom_post_class":"","_genesis_layout":"","footnotes":""},"categories":[3],"tags":[],"class_list":{"0":"post-69133","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-opetamine","8":"entry"},"_links":{"self":[{"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=\/wp\/v2\/posts\/69133","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=69133"}],"version-history":[{"count":0,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=\/wp\/v2\/posts\/69133\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=\/wp\/v2\/media\/69180"}],"wp:attachment":[{"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=69133"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=69133"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=69133"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}