{"id":331641,"date":"2024-04-11T01:48:13","date_gmt":"2024-04-11T00:48:13","guid":{"rendered":"https:\/\/liked.hu\/old\/?p=331641"},"modified":"2024-04-11T01:48:16","modified_gmt":"2024-04-11T00:48:16","slug":"miert-pont-300-000-km-s-a-fenysebesseg-es-honnan-tudjuk-hogy-ennyi","status":"publish","type":"post","link":"https:\/\/liked.hu\/old\/erdekes\/miert-pont-300-000-km-s-a-fenysebesseg-es-honnan-tudjuk-hogy-ennyi\/","title":{"rendered":"Mi\u00e9rt pont 300 000 km\/s a f\u00e9nysebess\u00e9g \u00e9s honnan tudjuk, hogy ennyi?"},"content":{"rendered":"\n<p>A speci\u00e1lis relativit\u00e1selm\u00e9let szerint a f\u00e9ny sebess\u00e9ge alapvet\u0151 fizikai \u00e1lland\u00f3, ami nem f\u00fcgg a f\u00e9nyforr\u00e1s mozg\u00e1s\u00e1t\u00f3l, \u00e9s 299 792 458 m\/s, de ezt a sz\u00e1mot \u00e1ltal\u00e1ban 300 000 km\/s-ra kerek\u00edtik.<\/p>\n\n\n\n\n<div style=\"float:none;margin:0px 0 0px 0;text-align:center;\">\n<div class=\"mobileShowkakettes\"><div class=\"mobileShowka2\"><div style=\"padding-top:0px;padding-bottom:15px;min-height: 300px;\"><div class=\"hirdetes\">HIRDET\u00c9S<\/div>\n<!-- 300lista -->\n<ins class=\"adsbygoogle\"\n     style=\"display:inline-block;width:300px;height:250px\"\n     data-ad-client=\"ca-pub-9424088931673893\"\n     data-ad-slot=\"8471340766\"><\/ins>\n<script async>\n     (adsbygoogle = window.adsbygoogle || []).push({});\n<\/script><\/div><\/div><\/div><\/div>\n\n\n\n\n<p>De honnan tudjuk, hogy a f\u00e9ny sebess\u00e9ge pontosan ennyi? Mi\u00e9rt nem lehetne nagyobb vagy kisebb?<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" width=\"960\" height=\"479\" src=\"https:\/\/liked.hu\/old\/wp-content\/uploads\/2024\/04\/Fenyecske.webp\" alt=\"F\u00e9nyecske\" class=\"wp-image-331648\" srcset=\"https:\/\/liked.hu\/old\/wp-content\/uploads\/2024\/04\/Fenyecske.webp 960w, https:\/\/liked.hu\/old\/wp-content\/uploads\/2024\/04\/Fenyecske-768x383.webp 768w, https:\/\/liked.hu\/old\/wp-content\/uploads\/2024\/04\/Fenyecske-360x180.webp 360w\" sizes=\"(max-width: 960px) 100vw, 960px\" \/><figcaption>R\u00f8mer megfigyel\u00e9sei a Jupiter holdjair\u00f3l.<\/figcaption><\/figure>\n\n\n\n<p>A f\u00e9ny sebess\u00e9g\u00e9t el\u0151sz\u00f6r a d\u00e1n csillag\u00e1sz, Ole R\u00f8mer m\u00e9rte meg. 1666 \u00e9s 1668 k\u00f6z\u00f6tt a Jupiter holdjait figyelte meg, \u00e9s olyan szab\u00e1lyszer\u0171s\u00e9geket fedezett fel, amelyeket csak a f\u00e9ny v\u00e9ges sebess\u00e9g\u00e9vel lehetett magyar\u00e1zni. Kor\u00e1bban egy\u00e9bk\u00e9nt a f\u00e9ny sebess\u00e9g\u00e9t v\u00e9gtelennek tartott\u00e1k. K\u00e9s\u0151bb, 1672 \u00e9s 1675 k\u00f6z\u00f6tt R\u00f8mer Cassinivel egy\u00fctt Franciaorsz\u00e1gban dolgozva \u00e9szrevette, hogy amikor a F\u00f6ld \u00e9s a Jupiter k\u00f6zelebb ker\u00fcl egym\u00e1shoz, a Jupiter holdjainak fogyatkoz\u00e1sai k\u00f6z\u00f6tti id\u0151tartam cs\u00f6kken, m\u00edg amikor a bolyg\u00f3k t\u00e1volodnak, ez az id\u0151tartam n\u00f6vekszik.<\/p>\n\n\n\n<p>Ebb\u0151l R\u00f8mer \u00e9s Cassini kisz\u00e1m\u00edtotta a f\u00e9ny sebess\u00e9g\u00e9t, \u00e9s 135 000 km\/s, illetve 220 000 km\/s \u00e9rt\u00e9keket kaptak. A jelent\u0151s hiba ellen\u00e9re az eredm\u00e9ny leny\u0171g\u00f6z\u0151, tekintve, hogy abban az id\u0151ben a csillag\u00e1szok meglehet\u0151sen primit\u00edv eszk\u00f6z\u00f6kkel rendelkeztek, \u00e9s ennek k\u00f6vetkezt\u00e9ben a t\u00e1vols\u00e1gok becsl\u00e9se sem volt pontos. (Ez okozta a nagy k\u00fcl\u00f6nbs\u00e9get R\u00f8mer \u00e9s Cassini sz\u00e1m\u00edt\u00e1sai k\u00f6z\u00f6tt.)<\/p>\n\n\n\n<p>Az\u00f3ta a f\u00e9ny sebess\u00e9g\u00e9t a m\u00e9r\u0151eszk\u00f6z\u00f6k fejl\u0151d\u00e9s\u00e9nek k\u00f6sz\u00f6nhet\u0151en sokszor finom\u00edtott\u00e1k, \u00e9s a mai adatok szerint 299 792,458 km\/s.<\/p>\n\n\n\n\n<div style=\"float:none;margin:0px 0 0px 0;text-align:center;\">\n<div class=\"mobileHideke5\"><div style=\"margin-top:25px;\"><div class=\"hirdeteshatter\"><div style=\"display: inline-block;width: 50%;min-width:305px;vertical-align: top;\"><div class=\"hirdetes\">HIRDET\u00c9S<\/div>\n<!-- LikedQ51 -->\n<ins class=\"adsbygoogle\"\n     style=\"display:inline-block;width:300px;height:250px\"\n     data-ad-client=\"ca-pub-9424088931673893\"\n     data-ad-slot=\"8284063326\"><\/ins>\n<script async>\n     (adsbygoogle = window.adsbygoogle || []).push({});\n<\/script><\/div><div style=\"display: inline-block;width: 50%;min-width:305px;vertical-align: top;\"><div class=\"hirdetes\">HIRDET\u00c9S<\/div>\n<!-- LikedQ52 -->\n<ins class=\"adsbygoogle\"\n     style=\"display:inline-block;width:300px;height:250px\"\n     data-ad-client=\"ca-pub-9424088931673893\"\n     data-ad-slot=\"2840164950\"><\/ins>\n<script async>\n     (adsbygoogle = window.adsbygoogle || []).push({});\n<\/script><\/div><\/div><\/div><\/div>\n<div style=\"display:flex;flex-direction:column;\"><div class=\"mobileShowka5\"><div style=\"padding-top:10px;padding-bottom:10px;min-height: 300px;\"><div class=\"hirdetes\">HIRDET\u00c9S<\/div>\n<!-- LikedQ5M -->\n<ins class=\"adsbygoogle\"\n     style=\"display:inline-block;width:300px;height:250px\"\n     data-ad-client=\"ca-pub-9424088931673893\"\n     data-ad-slot=\"9022429928\"><\/ins>\n<script async>\n     (adsbygoogle = window.adsbygoogle || []).push({});\n<\/script><\/div><\/div><\/div><\/div>\n\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" width=\"960\" height=\"719\" src=\"https:\/\/liked.hu\/old\/wp-content\/uploads\/2024\/04\/Fenysebesseg-miert-014.webp\" alt=\"F\u00e9nysebess\u00e9g mi\u00e9rt 014\" class=\"wp-image-331647\" srcset=\"https:\/\/liked.hu\/old\/wp-content\/uploads\/2024\/04\/Fenysebesseg-miert-014.webp 960w, https:\/\/liked.hu\/old\/wp-content\/uploads\/2024\/04\/Fenysebesseg-miert-014-768x575.webp 768w\" sizes=\"(max-width: 960px) 100vw, 960px\" \/><figcaption>A f\u00e9ny sz\u00e9tv\u00e1laszt\u00e1sa egy prizm\u00e1ban.<\/figcaption><\/figure>\n\n\n\n<p>A 19. sz\u00e1zadban James Maxwellnek siker\u00fclt bebizony\u00edtania, hogy a f\u00e9ny elektrom\u00e1gneses hull\u00e1m. Kidolgozott egy egyenletrendszert, amely le\u00edrja a nyugalmi t\u00f6lt\u00e9sek, a mozg\u00f3 t\u00f6lt\u00e9sek \u00e9s az elektromos \u00e1ramok viselked\u00e9s\u00e9t, \u00e9s \u00f6sszekapcsolja az elektrodinamik\u00e1t \u00e9s a magnetizmust. Ezeket az egyenleteket ma Maxwell-egyenleteknek nevezz\u00fck.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" width=\"960\" height=\"859\" src=\"https:\/\/liked.hu\/old\/wp-content\/uploads\/2024\/04\/Fenysebesseg-miert-013.webp\" alt=\"F\u00e9nysebess\u00e9g mi\u00e9rt 013\" class=\"wp-image-331646\" srcset=\"https:\/\/liked.hu\/old\/wp-content\/uploads\/2024\/04\/Fenysebesseg-miert-013.webp 960w, https:\/\/liked.hu\/old\/wp-content\/uploads\/2024\/04\/Fenysebesseg-miert-013-768x687.webp 768w\" sizes=\"(max-width: 960px) 100vw, 960px\" \/><figcaption>A Maxwell-egyenletek James Maxwell eml\u00e9km\u0171v\u00e9nek l\u00e1b\u00e1hoz vannak v\u00e9sve.<\/figcaption><\/figure>\n\n\n\n<p>A Maxwell-egyenleteknek t\u00f6bbf\u00e9le lehets\u00e9ges megold\u00e1sa is van, \u00e9s az egyik megold\u00e1s az egym\u00e1ssal azonos f\u00e1zisban leng\u0151, mer\u0151leges elektromos \u00e9s m\u00e1gneses mez\u0151kb\u0151l \u00e1ll\u00f3 elektrom\u00e1gneses hull\u00e1m. Maxwell kisz\u00e1m\u00edtotta ezeknek a hull\u00e1moknak a terjed\u00e9si sebess\u00e9g\u00e9t, \u00e9s k\u00f6r\u00fclbel\u00fcl 300 000 km\/s \u00e9rt\u00e9ket kapott, ami megegyezik a m\u00e1r akkoriban ismert f\u00e9nysebess\u00e9ggel!<\/p>\n\n\n\n\n<div style=\"float:none;margin:0px 0 0px 0;text-align:center;\">\n<div class=\"mobileHideke8\"><div style=\"margin-top:25px;\"><div class=\"hirdeteshatter\"><div style=\"display: inline-block;width: 50%;min-width:340px;vertical-align: top;\"><div class=\"hirdetes\">HIRDET\u00c9S<\/div>\n<!-- Liked7Q1 -->\n<ins class=\"adsbygoogle\"\n     style=\"display:inline-block;width:336px;height:280px\"\n     data-ad-client=\"ca-pub-9424088931673893\"\n     data-ad-slot=\"3022062587\"><\/ins>\n<script async>\n     (adsbygoogle = window.adsbygoogle || []).push({});\n<\/script><\/div><div style=\"display: inline-block;width: 50%;min-width:340px;vertical-align: top;\"><div class=\"hirdetes\">HIRDET\u00c9S<\/div>\n<!-- Liked7Q2 -->\n<ins class=\"adsbygoogle\"\n     style=\"display:inline-block;width:336px;height:280px\"\n     data-ad-client=\"ca-pub-9424088931673893\"\n     data-ad-slot=\"3952000871\"><\/ins>\n<script async>\n     (adsbygoogle = window.adsbygoogle || []).push({});\n<\/script><\/div><\/div><\/div><\/div>\n<div style=\"display:flex;flex-direction:column;\"><div class=\"mobileShowka8\"><div style=\"padding-top:15px;margin-bottom:15px;min-height: 300px;\"><div class=\"hirdetes\">HIRDET\u00c9S<\/div>\n<!-- Liked7QMobil -->\n<ins class=\"adsbygoogle\"\n     style=\"display:inline-block;width:336px;height:280px\"\n     data-ad-client=\"ca-pub-9424088931673893\"\n     data-ad-slot=\"5073510857\"><\/ins>\n<script async>\n     (adsbygoogle = window.adsbygoogle || []).push({});\n<\/script><\/div><\/div><\/div><\/div>\n\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" width=\"960\" height=\"705\" src=\"https:\/\/liked.hu\/old\/wp-content\/uploads\/2024\/04\/Fenysebesseg-miert-012.webp\" alt=\"F\u00e9nysebess\u00e9g mi\u00e9rt 012\" class=\"wp-image-331645\" srcset=\"https:\/\/liked.hu\/old\/wp-content\/uploads\/2024\/04\/Fenysebesseg-miert-012.webp 960w, https:\/\/liked.hu\/old\/wp-content\/uploads\/2024\/04\/Fenysebesseg-miert-012-768x564.webp 768w\" sizes=\"(max-width: 960px) 100vw, 960px\" \/><figcaption>Oszcill\u00e1l\u00f3, egym\u00e1sra mer\u0151leges, azonos f\u00e1zis\u00fa elektrom\u00e1gneses mez\u0151k.<\/figcaption><\/figure>\n\n\n\n<p>Az\u00f3ta ez a sebess\u00e9g a fizika sz\u00e1mos ter\u00fclet\u00e9n felbukkant:<\/p>\n\n\n\n<ul><li>Ez a sebess\u00e9ge b\u00e1rmely t\u00f6meg n\u00e9lk\u00fcli r\u00e9szecsk\u00e9nek<\/li><li>Ezzel a sebess\u00e9ggel terjednek az elektrom\u00e1gneses rezg\u00e9sek<\/li><li>Ezzel a sebess\u00e9ggel terjednek a gravit\u00e1ci\u00f3s hull\u00e1mok<\/li><li>Ez a maxim\u00e1lisan lehets\u00e9ges inform\u00e1ci\u00f3\u00e1tviteli sebess\u00e9g<\/li><li>\u00d6sszekapcsolja a t\u00f6meget \u00e9s az energi\u00e1t (a h\u00edres E = mc\u00b2 egyenletben)<\/li><\/ul>\n\n\n\n<h4><strong>De mi\u00e9rt pont ennyi a f\u00e9ny sebess\u00e9ge?<\/strong><\/h4>\n\n\n\n<p>A f\u00e9ny sebess\u00e9ge az Univerzumunk egyik alapvet\u0151 \u00e1lland\u00f3ja, amelyre sz\u00e1mos m\u00e1s \u00e1lland\u00f3 \u00e9p\u00fcl. Ha a f\u00e9ny sebess\u00e9ge nagyobb vagy kisebb lenne, az atomok nem j\u00f6hetn\u00e9nek l\u00e9tre, \u00e9s emiatt nem alakuln\u00e1nak ki galaxisok, csillagok, bolyg\u00f3k \u00e9s v\u00e9g\u00fcl term\u00e9szetesen intelligens \u00e9let sem.<\/p>\n\n\n\n\n<div style=\"float:none;margin:0px 0 0px 0;text-align:center;\">\n<div class=\"mobileHideke8\"><div class=\"hirdeteshatter\"><div style=\"display: inline-block;width: 50%;min-width:340px;vertical-align: top;\"><div class=\"hirdetes\">HIRDET\u00c9S<\/div>\n<!-- LikedQ81 -->\n<ins class=\"adsbygoogle\"\n     style=\"display:inline-block;width:336px;height:280px\"\n     data-ad-client=\"ca-pub-9424088931673893\"\n     data-ad-slot=\"2436840276\"><\/ins>\n<script async>\n     (adsbygoogle = window.adsbygoogle || []).push({});\n<\/script><\/div><div style=\"display: inline-block;width: 50%;min-width:340px;vertical-align: top;\"><div class=\"hirdetes\">HIRDET\u00c9S<\/div>\n<!-- LikedQ82 -->\n<ins class=\"adsbygoogle\"\n     style=\"display:inline-block;width:336px;height:280px\"\n     data-ad-client=\"ca-pub-9424088931673893\"\n     data-ad-slot=\"3558350253\"><\/ins>\n<script async>\n     (adsbygoogle = window.adsbygoogle || []).push({});\n<\/script><\/div><\/div><\/div>\n<div style=\"display:flex;flex-direction:column;\"><div class=\"mobileShowka8 nyolc\"><div style=\"padding-top:15px;padding-bottom:5px;min-height: 300px;\"><div class=\"hirdetes\">HIRDET\u00c9S<\/div>\n<!-- LikedQ8M -->\n<ins class=\"adsbygoogle\"\n     style=\"display:inline-block;width:336px;height:280px\"\n     data-ad-client=\"ca-pub-9424088931673893\"\n     data-ad-slot=\"4679860235\"><\/ins>\n<script async>\n     (adsbygoogle = window.adsbygoogle || []).push({});\n<\/script><\/div><\/div><\/div><\/div>\n\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" width=\"375\" height=\"271\" src=\"https:\/\/liked.hu\/old\/wp-content\/uploads\/2024\/04\/Fenysebesseg-miert-011.webp\" alt=\"F\u00e9nysebess\u00e9g mi\u00e9rt 011\" class=\"wp-image-331644\"\/><\/figure>\n\n\n\n<p>A kreacionizmus h\u00edvei ezt a jelens\u00e9get a Teremt\u0151 l\u00e9tez\u00e9s\u00e9nek bizony\u00edt\u00e9k\u00e1nak tartj\u00e1k, mivel szerint\u00fck a Teremt\u0151 az alapvet\u0151 \u00e1lland\u00f3knak sz\u00e1nd\u00e9kosan azokat az \u00e9rt\u00e9keket adta, amelyek sz\u00fcks\u00e9gesek az Univerzum l\u00e9tez\u00e9s\u00e9hez \u00e9s az intelligens \u00e9let megjelen\u00e9s\u00e9hez. Azonban a kreacionizmus nem az egyetlen lehets\u00e9ges, \u00e9s m\u00e9g kev\u00e9sb\u00e9 a legval\u00f3sz\u00edn\u0171bb magyar\u00e1zat arra, hogy az \u00e1lland\u00f3k mi\u00e9rt \u00e9ppen az \u00e1ltalunk ismert \u00e9rt\u00e9kekkel rendelkeznek.<\/p>\n\n\n\n<p>A tud\u00f3sok t\u00f6bbs\u00e9ge az antropikus elvet vallja, amely kimondja, hogy az Univerzumot az\u00e9rt l\u00e1tjuk olyannak, amilyen, mert az \u00e1lland\u00f3k pontosan ilyen kombin\u00e1ci\u00f3ja tette lehet\u0151v\u00e9 az intelligens \u00e9let kialakul\u00e1s\u00e1t. Ha az \u00e9rt\u00e9kek m\u00e1sok lenn\u00e9nek, akkor mi egyszer\u0171en nem l\u00e9tezn\u00e9nk, \u00e9s senki sem t\u00f6prengen\u00e9ne ezeken a k\u00e9rd\u00e9seken.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" width=\"660\" height=\"475\" src=\"https:\/\/liked.hu\/old\/wp-content\/uploads\/2024\/04\/Fenysebesseg-miert-010.webp\" alt=\"F\u00e9nysebess\u00e9g mi\u00e9rt 010\" class=\"wp-image-331643\"\/><\/figure>\n\n\n\n<p>A multiverzum elm\u00e9lete szerint minden alkalommal, amikor egy \u00faj univerzum sz\u00fcletik, egyedi halmaz\u00e1t kapja az alapvet\u0151 \u00e1lland\u00f3knak. Att\u00f3l f\u00fcgg\u0151en, hogy ezek az \u00e9rt\u00e9kek mik\u00e9nt alakulnak \u00e9s viszonyulnak egym\u00e1shoz, az univerzum azonnal \u00f6sszeomolhat, sz\u00e9tszakadhat, vagy tov\u00e1bb is \u00e9lhet valamilyen form\u00e1ban, p\u00e9ld\u00e1ul ak\u00e1r \u00fagy is, hogy nem l\u00e9tezik benne olyan l\u00e9ny, aki ezeket a k\u00e9rd\u00e9seket feltenn\u00e9, mint ahogy most mi.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Sokan \u00fagy v\u00e9lik, hogy csak ez\u00e9rt l\u00e9tezik intelligens \u00e9let az Univerzumban.<\/p>\n","protected":false},"author":22,"featured_media":331642,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"buzzeditor_post_format":""},"categories":[23],"tags":[9900,5823,9358],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v19.6.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Mi\u00e9rt pont 300 000 km\/s a f\u00e9nysebess\u00e9g \u00e9s honnan tudjuk, 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