{"id":332241,"date":"2026-08-24T07:48:17","date_gmt":"2026-08-24T07:48:17","guid":{"rendered":"https:\/\/www.europesays.com\/fi\/332241\/"},"modified":"2026-08-24T07:48:17","modified_gmt":"2026-08-24T07:48:17","slug":"nain-pitkalle-avaruuteen-lasersade-ulottuu","status":"publish","type":"post","link":"https:\/\/www.europesays.com\/fi\/332241\/","title":{"rendered":"N\u00e4in pitk\u00e4lle avaruuteen lasers\u00e4de ulottuu"},"content":{"rendered":"<p>Lasers\u00e4de kuten n\u00e4kyv\u00e4 valo ja kaikki muu s\u00e4hk\u00f6magneettinen s\u00e4teily koostuu fotoneista.<\/p>\n<p>Jos fotoni osuu avaruudessa johonkin kohteeseen, esimerkiksi kosmiseen p\u00f6lyhiukkaseen, se ei en\u00e4\u00e4 ole osa lasers\u00e4dett\u00e4. Fotoni voi kuitenkin jatkaa matkaansa ikuisesti <a href=\"https:\/\/tieku.fi\/maailmankaikkeus\" class=\"hover:font-bold\" rel=\"nofollow noopener\" target=\"_blank\">maailmankaikkeudessa<\/a>.<\/p>\n<p>Huolimatta fotonien kuolemattomuudesta, lasers\u00e4de kuitenkin katoaa lopulta. Diffraktion eli valoaaltojen taipumisen ja hajoamisen vuoksi s\u00e4de nimitt\u00e4in hajoaa yh\u00e4 enemm\u00e4n.<\/p>\n<p>Kaikki lasers\u00e4teet kulkevat aluksi aukon l\u00e4pi, joka saa valon levi\u00e4m\u00e4\u00e4n hieman sivuille.<\/p>\n","protected":false},"excerpt":{"rendered":"Lasers\u00e4de kuten n\u00e4kyv\u00e4 valo ja kaikki muu s\u00e4hk\u00f6magneettinen s\u00e4teily koostuu fotoneista. Jos fotoni osuu avaruudessa johonkin kohteeseen, esimerkiksi&hellip;\n","protected":false},"author":2,"featured_media":332242,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_share_on_mastodon":"0"},"categories":[115],"tags":[33,31,30,455,454,118,32,119],"class_list":["post-332241","post","type-post","status-publish","format-standard","has-post-thumbnail","category-fysiikka","tag-fi","tag-finland","tag-finnish","tag-fysiikka","tag-physics","tag-science","tag-suomi","tag-tiede"],"share_on_mastodon":{"url":"https:\/\/pubeurope.com\/@fi\/117149388408955080","error":""},"_links":{"self":[{"href":"https:\/\/www.europesays.com\/fi\/wp-json\/wp\/v2\/posts\/332241","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.europesays.com\/fi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.europesays.com\/fi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/fi\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/fi\/wp-json\/wp\/v2\/comments?post=332241"}],"version-history":[{"count":0,"href":"https:\/\/www.europesays.com\/fi\/wp-json\/wp\/v2\/posts\/332241\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/fi\/wp-json\/wp\/v2\/media\/332242"}],"wp:attachment":[{"href":"https:\/\/www.europesays.com\/fi\/wp-json\/wp\/v2\/media?parent=332241"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.europesays.com\/fi\/wp-json\/wp\/v2\/categories?post=332241"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.europesays.com\/fi\/wp-json\/wp\/v2\/tags?post=332241"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}