{"id":77749,"date":"2015-04-14T12:55:35","date_gmt":"2015-04-14T09:55:35","guid":{"rendered":"http:\/\/www.fyysika.ee\/?p=77749"},"modified":"2015-04-19T15:27:21","modified_gmt":"2015-04-19T12:27:21","slug":"valguse-difraktsioon-kolmes-dimensioonis","status":"publish","type":"post","link":"https:\/\/www.fyysika.ee\/?p=77749","title":{"rendered":"Valguse difraktsioon kolmes dimensioonis"},"content":{"rendered":"<p>Pildid on kahedimensionaalsed, loodus pigem ei ole. Kui me tahame seletada, milline n\u00e4eb v\u00e4lja l\u00e4bi v\u00e4ikese augu l\u00e4inud laserivalgus, siis me joonistame v\u00f5i pildistame seda\u00a0mingil kaugusel august. Aga mis toimub vahepeal ja mis saab edasi?<\/p>\n<p>Sellelt pildilt on rohkem n\u00e4ha &#8211; on \u00fcsna lihtne ette kujutada, missugune pilt j\u00e4\u00e4ks ekraanile, kui asetaksime selle erinevatele kaugustele optilisest s\u00fcsteemist.<\/p>\n<p>Pilt j\u00e4tab ka nuputamiseks ruumi. Miks on valgust k\u00f5rvalt vaadates n\u00e4ha? Arvatavasti on valguse teel &#8220;udu&#8221;. Miks n\u00e4htav piirkond j\u00e4rsult \u00e4ra l\u00f5peb? Arvatavasti on udupilv mingil viisil piiratud. Missugusest optilisest s\u00fcsteemist sellise ruumilise kujuga valgusv\u00e4li saadakse? Konkreetsel juhul on tegemist laserikiirt laiendava s\u00fcsteemiga, mis ei ole just liiga kvaliteetne &#8211; ideaalsel juhul peaks sealt v\u00e4lja tulema laserikiir, mis erineb algsest kiirest\u00a0\u00a0vaid suurema ristl\u00f5ike l\u00e4bim\u00f5\u00f5du poolest.<\/p>\n<div id=\"attachment_77751\" style=\"width: 1034px\" class=\"wp-caption alignleft\"><a href=\"http:\/\/www.fyysika.ee\/wp-content\/uploads\/2015\/04\/15-04-06.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-77751\" class=\"wp-image-77751 size-full\" src=\"http:\/\/www.fyysika.ee\/wp-content\/uploads\/2015\/04\/15-04-06.jpg\" alt=\"15-04-06\" width=\"1024\" height=\"683\" srcset=\"https:\/\/www.fyysika.ee\/wp-content\/uploads\/2015\/04\/15-04-06.jpg 1024w, https:\/\/www.fyysika.ee\/wp-content\/uploads\/2015\/04\/15-04-06-300x200.jpg 300w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><p id=\"caption-attachment-77751\" class=\"wp-caption-text\">Foto: Victor M. Rico, Centro de Investigaciones en \u00d3ptica A.C.<\/p><\/div>\n","protected":false},"excerpt":{"rendered":"<p>Pildid on kahedimensionaalsed, loodus pigem ei ole. Kui me tahame seletada, milline n\u00e4eb v\u00e4lja l\u00e4bi v\u00e4ikese augu l\u00e4inud laserivalgus, siis me joonistame v\u00f5i pildistame seda\u00a0mingil kaugusel august. Aga mis toimub vahepeal ja mis saab edasi? Sellelt pildilt on rohkem n\u00e4ha &#8211; on \u00fcsna lihtne ette kujutada, missugune pilt j\u00e4\u00e4ks ekraanile, kui asetaksime selle erinevatele kaugustele [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":77751,"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-77749","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\/77749","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=77749"}],"version-history":[{"count":0,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=\/wp\/v2\/posts\/77749\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=\/wp\/v2\/media\/77751"}],"wp:attachment":[{"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=77749"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=77749"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=77749"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}