{"id":16394,"date":"2012-06-15T04:24:04","date_gmt":"2012-06-15T03:24:04","guid":{"rendered":"http:\/\/duncanshelley.com\/?p=2007"},"modified":"2023-05-16T19:42:07","modified_gmt":"2023-05-16T17:42:07","slug":"lathatatlansag","status":"publish","type":"post","link":"https:\/\/duncanshelley.com\/en\/lathatatlansag\/","title":{"rendered":"L\u00e1thatatlans\u00e1g"},"content":{"rendered":"

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<\/a>
Ne \u00edt\u00e9lj a k\u00fcls\u0151 alapj\u00e1n. F\u0151leg, ha nem is l\u00e1that\u00f3...<\/figcaption><\/figure>\n

Kor\u00e1bban soha nem foglalkoztam a l\u00e1thatatlans\u00e1ggal, mert nem \u00e9rdekelt. Sz\u00e1momra annyit jelentett, hogy Predator meg Crysis, \u00e9s nem t\u00f6bbet. Fel sem mer\u00fclt, hogy valami lehet a h\u00e1tt\u00e9rben, \u00e9rdektelens\u00e9gemet lez\u00e1rtam azzal, hogy ez az eg\u00e9sz t\u00e9ma science-fiction, \u00e9s nem \u00e9rdemes komolyan venni.<\/p>\n

A f\u00e9lelem \u00edze<\/span><\/span><\/a> kapcs\u00e1n azonban bele\u00e1stam magam a t\u00e9m\u00e1ba. Legnagyobb meglepet\u00e9semre, a l\u00e1thatatlans\u00e1g h\u00e1ttere a legkev\u00e9sb\u00e9 sem t\u0171nik l\u00e9gb\u0151l kapottnak, s\u0151t konkr\u00e9t eredm\u00e9nyek is vannak.<\/p>\n

A l\u00e1thatatlans\u00e1g els\u0151 tudom\u00e1nyosnak mondhat\u00f3 elm\u00e9lete 1967-b\u0151l sz\u00e1rmazik. Victor Veselago, orosz fizikus ekkor alkotta meg a metaanyag-elm\u00e9letet. Az elm\u00e9let le\u00edr egy felt\u00e9telezett anyagot, amely elt\u00e9r\u00edti az elektrom\u00e1gneses hull\u00e1mokat. A metaanyag egyik saj\u00e1tos jellemz\u0151je a negat\u00edv t\u00f6r\u00e9smutat\u00f3: a f\u00e9ny, \u00e9rintkezve az anyaggal nem hatol be abba, hanem megker\u00fcli azt \u2013 ugyan\u00fagy, ahogyan a v\u00edz k\u00f6rbefolyik egy sima fel\u00fclet\u0171 k\u0151 k\u00f6r\u00fcl, \u00e9s nem hatol be annak anyag\u00e1ba.<\/p>\n

A metaanyag a term\u00e9szetben nem lelhet\u0151 fel. Elektromos \u00e9s m\u00e1gneses \u00e1tereszt\u0151k\u00e9pess\u00e9ge negat\u00edv, az elektrom\u00e1gneses jelens\u00e9gek e tulajdons\u00e1gok miatt m\u00e1sk\u00e9ppen zajlanak le jelenl\u00e9t\u00e9ben.<\/p>\n

A hidegh\u00e1bor\u00fa a felder\u00edt\u00e9s \u00e9s a k\u00e9mked\u00e9s tesztk\u00f6zege volt, ellent\u00e9tben a \u201eforr\u00f3h\u00e1bor\u00faval\u201d, amiben a fegyverek kapt\u00e1k a f\u0151szerepet. A hidegh\u00e1bor\u00fa alatt komoly kutat\u00e1sok folytak a l\u00e1thatatlans\u00e1g t\u00e9m\u00e1j\u00e1ban minden oldalon. Konkr\u00e9tumokat ebb\u0151l az id\u0151szakb\u00f3l nem tal\u00e1ltam.<\/p>\n

A metaanyag bizonyos hull\u00e1mhossz\u00fas\u00e1g\u00fa f\u00e9nyt t\u00e9r\u00edt el, nem valamennyi hull\u00e1mhosszt. Teh\u00e1t az, ami sz\u00e1munkra l\u00e1that\u00f3, m\u00e1s l\u00e9tform\u00e1k sz\u00e1m\u00e1ra lehet l\u00e1thatatlan, \u00e9s ford\u00edtva. Lehets\u00e9ges, hogy azok a r\u00e9gi legend\u00e1k, melyek szerint a macsk\u00e1k a val\u00f3s\u00e1g olyan aspektusait is l\u00e1tj\u00e1k, amit az ember nem, igazak.<\/p>\n

2006-ban amerikai tud\u00f3sok metaanyag seg\u00edts\u00e9g\u00e9vel elt\u0171ntettek egy r\u00e9zgy\u0171r\u0171t, adott hull\u00e1mhossz\u00fas\u00e1g\u00fa f\u00e9ny el\u0151l. 2008-ban olyan metaanyagot hoztak l\u00e9tre, amely az ember sz\u00e1m\u00e1ra l\u00e1that\u00f3 f\u00e9nytartom\u00e1nyban is m\u0171k\u00f6d\u00f6tt. Ezek nyilv\u00e1nos bejelent\u00e9sek. Mi lehet m\u00e9g? (Meg kell jegyezni, hogy mindezen kutat\u00e1sok \u00e9s k\u00eds\u00e9rleti eredm\u00e9nyek m\u00e9g nagyon t\u00e1vol \u00e1llnak a gyakorlatban felhaszn\u00e1lhat\u00f3 l\u00e1thatatlans\u00e1gt\u00f3l, a b\u00e1rmilyen sz\u00edn\u0171, b\u00e1rmilyen form\u00e1j\u00fa, b\u00e1rmilyen \u00f6sszet\u00e9tel\u0171 anyag elt\u00fcntet\u00e9s\u00e9t\u0151l.)<\/p>\n

Lehet fant\u00e1zi\u00e1lni arr\u00f3l, hogy hol tart ma a kutat\u00e1s, \u00e9s hogy mi minden lehet jelen \u00e9let\u00fcnkben, amit nem l\u00e1tunk, pedig ott van. Emberek, kamer\u00e1k, j\u00e1rm\u0171vek, falak, \u00e9p\u00fcletek\u2026 nem emberek.<\/p>\n

Egy\u00e9bk\u00e9nt nemcsak katonai \u00e9s titkosszolg\u00e1lati felhaszn\u00e1l\u00e1si ter\u00fclete van a metaanyagnak. Optikai rendszerekben is megjelenhetnek, jelent\u0151sen n\u00f6velve azok hat\u00e9konys\u00e1g\u00e1t.<\/p>\n

Hivatalosan metaanyag-kutat\u00e1ssal foglalkozik sz\u00e1mos neves int\u00e9zet \u00e9s egyetem, az Egyes\u00fclt \u00c1llamokban, Oroszorsz\u00e1gban \u00e9s K\u00edn\u00e1ban. 2004 \u00f3ta egyre gyakrabban cikkeznek a t\u00e9m\u00e1r\u00f3l, ide\u00e9rtve az \u00fagynevezett m\u00e9rt\u00e9kad\u00f3 tudom\u00e1nyos kiadv\u00e1nyokat is.<\/p>\n

Mit gondoltok, a metaanyag l\u00e9tezik vagy l\u00e9tezhet? Vannak m\u00e1r olyan \u00f6lt\u00f6zetek, amik teljes l\u00e1thatatlans\u00e1got ny\u00fajtanak? Figyelemmel k\u00eds\u00e9rhetik \u00e9let\u00fcnket metaanyag-kamer\u00e1k \u00e9s k\u00fcl\u00f6nf\u00e9le detektorok? Vajon mi\u00e9rt kap egyre nagyobb nyilv\u00e1noss\u00e1got a t\u00e9ma?<\/p>\n

V\u00e1rom a v\u00e9lem\u00e9nyeiteket!<\/p>","protected":false},"excerpt":{"rendered":"

A l\u00e1thatatlans\u00e1g l\u00e9tezik. A kutat\u00e1sok nemzetk\u00f6zi szinten folynak, vajon mi a c\u00e9l?<\/p>","protected":false},"author":6388,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_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":[73],"tags":[],"class_list":{"0":"post-16394","1":"post","2":"type-post","3":"status-publish","4":"format-standard","6":"category-a_vilag","7":"entry"},"acf":[],"yoast_head":"\nL\u00e1thatatlans\u00e1g - Duncan Shelley K\u00f6nyvesbolt<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/duncanshelley.com\/en\/lathatatlansag\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"L\u00e1thatatlans\u00e1g\" \/>\n<meta property=\"og:description\" content=\"A l\u00e1thatatlans\u00e1g l\u00e9tezik. 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