{"id":36746,"date":"2026-02-09T12:00:24","date_gmt":"2026-02-09T11:00:24","guid":{"rendered":"https:\/\/botland.com.pl\/blog\/?p=36746"},"modified":"2026-08-25T12:03:55","modified_gmt":"2026-08-25T10:03:55","slug":"co-to-jest-magnes-i-co-warto-o-nim-wiedziec-mat-uzup","status":"publish","type":"post","link":"https:\/\/botland.com.pl\/blog\/co-to-jest-magnes-i-co-warto-o-nim-wiedziec-mat-uzup\/","title":{"rendered":"Co to jest magnes i co warto o nim wiedzie\u0107?"},"content":{"rendered":"<span class=\"span-reading-time rt-reading-time\" style=\"display: block;\"><span class=\"rt-label rt-prefix\">Czas czytania:<\/span> <span class=\"rt-time\"> 3<\/span> <span class=\"rt-label rt-postfix\">min.<\/span><\/span>\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"36746\" class=\"elementor elementor-36746\" data-elementor-post-type=\"post\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-fe80094 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"fe80094\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-b8c5b2c\" data-id=\"b8c5b2c\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-28e2bad elementor-widget elementor-widget-text-editor\" data-id=\"28e2bad\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"blog-special\"><em> Artyku\u0142 powsta\u0142 we wsp\u00f3\u0142pracy z autorem zewn\u0119trznym i jest publikowany go\u015bcinnie poza naszym standardowym procesem redakcyjnym. Traktuj go jako materia\u0142 uzupe\u0142niaj\u0105cy.<\/em><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4428660 elementor-widget elementor-widget-text-editor\" data-id=\"4428660\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>\nW\u0142a\u015bciwo\u015bci magnetyczne materia\u0142\u00f3w znane s\u0105 ju\u017c od czas\u00f3w staro\u017cytnej Grecji. Dawniej ludzko\u015b\u0107 niezbyt dobrze rozumia\u0142a, dlaczego niekt\u00f3re minera\u0142y s\u0105 w stanie przyci\u0105ga\u0107 siebie nawzajem b\u0105d\u017a kawa\u0142ki metalu, jednak \u2013 jak to zwykle bywa\u0142o w naszej historii \u2013 wraz z rozwojem nauki ros\u0142o zainteresowanie nie tylko prawdziw\u0105 przyczyn\u0105 wyst\u0119powania tajemniczych oddzia\u0142ywa\u0144, ale tak\u017ce mo\u017cliwo\u015bciami ich praktycznego wykorzystania. Dzi\u015b mamy obszerny arsena\u0142 poj\u0119\u0107 fizycznych, kt\u00f3re umo\u017cliwiaj\u0105 opis, pomiar oraz obliczanie wielko\u015bci zwi\u0105zanych z magnetyzmem \u2013 w tym artykule nie b\u0119dziemy jednak zag\u0142\u0119bia\u0107 si\u0119 w szczeg\u00f3\u0142y teoretyczne, podamy natomiast gar\u015b\u0107 praktycznych informacji o budowie, rodzajach oraz zastosowaniach magnes\u00f3w.\n<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-5abe59c elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"5abe59c\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-4fc408a\" data-id=\"4fc408a\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-90d95f9 elementor-widget elementor-widget-heading\" data-id=\"90d95f9\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Magnes \u2013 czym w\u0142a\u015bciwie jest i jak dzia\u0142a?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-638a988 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"638a988\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-ffa0674\" data-id=\"ffa0674\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-a3ba113 elementor-widget elementor-widget-text-editor\" data-id=\"a3ba113\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>\nAby lepiej zrozumie\u0107 dzia\u0142anie magnes\u00f3w, nale\u017cy najpierw, przynajmniej pobie\u017cnie, zapozna\u0107 si\u0119 z podzia\u0142em r\u00f3\u017cnych materia\u0142\u00f3w pod wzgl\u0119dem w\u0142a\u015bciwo\u015bci magnetycznych. Najcz\u0119\u015bciej m\u00f3wimy o trzech grupach, okre\u015blanych jako: ferromagnetyki, paramagnetyki oraz diamagnetyki. Pierwsza z nich obejmuje materia\u0142y, kt\u00f3re pod wp\u0142ywem zewn\u0119trznego pola magnetycznego (wytworzonego np. przez pr\u0105d p\u0142yn\u0105cy w pobliskim przewodzie), same wytwarzaj\u0105 \u201ew\u0142asne\u201d, wewn\u0119trzne pole, dodatkowo wzmacniaj\u0105ce zewn\u0119trzne oddzia\u0142ywanie. Paramagnetyki tak\u017ce s\u0105 zdolne do wzmacniania istniej\u0105cego wewn\u0105trz nich pola magnetycznego, ale w stopniu niepor\u00f3wnanie mniejszym od ferromagnetyk\u00f3w. Ostatnia grupa materia\u0142\u00f3w to diamagnetyki \u2013 te nieznacznie os\u0142abiaj\u0105 pole magnetyczne. Ju\u017c w tym momencie domy\u015blasz si\u0119 zapewne, \u017ce do budowy magnes\u00f3w wykorzystujemy ferromagnetyki. Jak jednak si\u0119 dzieje, \u017ce magnesy sta\u0142e (zwane inaczej trwa\u0142ymi) mog\u0105 same wytwarza\u0107 pole magnetyczne i to na tyle silne, \u017ce jest ono w stanie oddzia\u0142ywa\u0107 z przedmiotami znajduj\u0105cymi si\u0119 wok\u00f3\u0142 nich? Odpowied\u017a le\u017cy w rodzaju ferromagnetyzmu. Materia\u0142y, z kt\u00f3rych wykonywane s\u0105 magnesy, nazywamy ferromagnetykami twardymi \u2013 wykazuj\u0105 one zdolno\u015b\u0107 do utrzymywania namagnesowania, nadawanego im w trakcie produkcji. Ferromagnetyki mi\u0119kkie wzmacniaj\u0105 natomiast pole magnetyczne tylko w obecno\u015bci pola zewn\u0119trznego \u2013 kiedy ono jednak zaniknie, \u201ew\u0142asne\u201d pole ferromagnetyka mi\u0119kkiego tak\u017ce bardzo wyra\u017anie s\u0142abnie.\n<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-24fb60d elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"24fb60d\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-58ba75b\" data-id=\"58ba75b\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-35b2042 elementor-widget elementor-widget-heading\" data-id=\"35b2042\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Rodzaje magnes\u00f3w<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-f015543 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"f015543\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-46e8950\" data-id=\"46e8950\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-93e7508 elementor-widget elementor-widget-text-editor\" data-id=\"93e7508\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>\nM\u00f3wi\u0105c o magnesach trwa\u0142ych mamy na my\u015bli dwie du\u017ce grupy element\u00f3w. Konwencjonalne magnesy ferrytowe maj\u0105 ciemnoszar\u0105 (grafitow\u0105) barw\u0119, p\u00f3\u0142matow\u0105 powierzchni\u0119 i s\u0105 bardzo kruche \u2013 \u0142atwo o ich uszkodzenie po uderzeniu, zw\u0142aszcza w rejonie ostrych kraw\u0119dzi. Magnesy tego typu stosowane by\u0142y powszechnie w silnikach elektrycznych, g\u0142o\u015bnikach elektrodynamicznych, zabawkach czy te\u017c np. zatrzaskach wykorzystywanych w meblarstwie. Ich niew\u0105tpliw\u0105 zalet\u0105 jest niski koszt produkcji, ale istotn\u0105 wad\u0105 \u2013 stosunkowo s\u0142abe pole magnetyczne. W ci\u0105gu ostatnich dekad niezwyk\u0142\u0105 popularno\u015b\u0107 zyska\u0142y natomiast magnesy neodymowe \u2013 produkowane ze specjalnego proszku, zawieraj\u0105cego trzy r\u00f3\u017cne metale (neodym, \u017celazo i bor), prasowanego pod du\u017cym ci\u015bnieniem w obecno\u015bci silnego, zewn\u0119trznego pola magnetycznego, a nast\u0119pnie wy\u017carzanego w wysokiej temperaturze, co umo\u017cliwia trwa\u0142e zwi\u0105zanie drobinek metalu i zachowanie silnego namagnesowania. Ogromna liczba zastosowa\u0144 \u201eneodym\u00f3w\u201d wynika z du\u017cej si\u0142y wytwarzanego przez nie pola magnetycznego (nawet przy bardzo ma\u0142ych wymiarach magnesu) oraz coraz ni\u017cszej ceny, zwi\u0105zanej z upowszechnieniem si\u0119 tej technologii. Niestety, magnesy neodymowe maj\u0105 te\u017c swoje wady \u2013 s\u0105 do\u015b\u0107 delikatne pod wzgl\u0119dem mechanicznym (krucho\u015b\u0107) i chemicznym (korozja spowodowana du\u017c\u0105 zdolno\u015bci\u0105 do wchodzenia w reakcje chemiczne g\u0142\u00f3wnego pierwiastka \u2013 neodymu). Alternatyw\u0105 dla magnes\u00f3w neodymowych s\u0105 elementy wykonane z tzw. stopu Alnico \u2013 odporne na korozj\u0119 i lepiej zachowuj\u0105ce swoje w\u0142a\u015bciwo\u015bci w podwy\u017cszonych temperaturach w por\u00f3wnaniu do \u201eneodym\u00f3w\u201d. W niekt\u00f3rych specjalistycznych zastosowaniach mo\u017cna spotka\u0107 tak\u017ce dro\u017csze, bardzo odporne na wysokie temperatury magnesy samarowo-kobaltowe.\n<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-b3d6c9a elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"b3d6c9a\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-1cacf47\" data-id=\"1cacf47\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-cd63eae elementor-widget elementor-widget-heading\" data-id=\"cd63eae\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Zastosowania magnes\u00f3w<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-74a9cdf elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"74a9cdf\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-5ec9e7c\" data-id=\"5ec9e7c\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-7248504 elementor-widget elementor-widget-text-editor\" data-id=\"7248504\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>\nMagnesy sta\u0142e s\u0105 podstaw\u0105 konstrukcji wielu rodzaj\u00f3w nap\u0119d\u00f3w elektrycznych \u2013 w tym silnik\u00f3w pr\u0105du sta\u0142ego (komutatorowych, zwanych tak\u017ce szczotkowymi, lub \u2013 jeszcze pro\u015bciej \u2013 silnikami DC), a tak\u017ce bezszczotkowych nap\u0119d\u00f3w BLDC, silnik\u00f3w krokowych i niekt\u00f3rych silnik\u00f3w synchronicznych. Magnesy mo\u017cna tak\u017ce znale\u017a\u0107 w pr\u0105dnicach \u2013 dobrym przyk\u0142adem b\u0119dzie tutaj\u2026 zwyk\u0142e dynamo rowerowe. Zdecydowana wi\u0119kszo\u015b\u0107 g\u0142o\u015bnik\u00f3w \u2013 w tym zar\u00f3wno miniaturowe przetworniki montowane w s\u0142uchawkach, jak i wielkiej mocy g\u0142o\u015bniki obecne w kolumnach estradowych \u2013 tak\u017ce wykorzystuj\u0105 magnesy sta\u0142e do wytwarzania pola, w kt\u00f3rym (w rytm odtwarzanej muzyki) porusza si\u0119 membrana po\u0142\u0105czona z cewk\u0105. Niewielkie magnesy s\u0105 wykorzystywane w zamkni\u0119ciach szafek, zatrzaskach etui niekt\u00f3rych telefon\u00f3w kom\u00f3rkowych, czy te\u017c w czujnikach otwarcia okien i drzwi, u\u017cywanych do budowy system\u00f3w alarmowych. Magnesy przydaj\u0105 si\u0119 ponadto w zastosowaniach domowych i biurowych &#8211; warto wspomnie\u0107 np. o tablicach magnetycznych czy te\u017c listwach do przechowywania no\u017cy kuchennych albo niewielkich narz\u0119dzi warsztatowych.\n<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t<div class=\"elementor-element elementor-element-aaefebe e-con-full border-section e-flex e-con e-child\" data-id=\"aaefebe\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-d849866 e-con-full e-flex e-con e-child\" data-id=\"d849866\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-2698b30 elementor-widget elementor-widget-heading\" data-id=\"2698b30\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-heading-title elementor-size-default\">Wszystko do druku 3D - i jeszcze wi\u0119cej<\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-bf5c13b elementor-widget elementor-widget-text-editor\" data-id=\"bf5c13b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\tOdkryj <a href=\"https:\/\/botland.com.pl\/842-drukarki-3d\" data-wpel-link=\"internal\">drukarki 3D<\/a>, <a href=\"https:\/\/botland.com.pl\/930-filamenty\" data-wpel-link=\"internal\">filamenty<\/a> i akcesoria oraz tysi\u0105ce produkt\u00f3w z kategorii elektroniki, <a href=\"https:\/\/botland.com.pl\/234-arduino\" data-wpel-link=\"internal\">Arduino<\/a>, <a href=\"https:\/\/botland.com.pl\/399-raspberry-pi\" data-wpel-link=\"internal\">Raspberry Pi<\/a>, robotyki i programowania. <strong>Sprawd\u017a pe\u0142n\u0105 ofert\u0119 w najwi\u0119kszym sklepie dla fan\u00f3w druku 3D w Polsce.<\/strong>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-142b50c e-con-full e-flex e-con e-child\" data-id=\"142b50c\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-69dc3c8 elementor-align-center btn-opt-class elementor-widget elementor-widget-button\" data-id=\"69dc3c8\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"https:\/\/botland.com.pl\/\" data-wpel-link=\"internal\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Zobacz sklep Botland<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>W codziennym \u017cyciu nie zastanawiamy si\u0119 zbyt cz\u0119sto nad znaczeniem magnes\u00f3w we wsp\u00f3\u0142czesnej technice \u2013 czy wiesz, \u017ce bez tych niepozornych element\u00f3w \u015bwiat wygl\u0105da\u0142by zupe\u0142nie inaczej?<\/p>\n","protected":false},"author":9,"featured_media":118460,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[709],"tags":[],"class_list":["post-36746","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-materialy-uzupelniajace"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Co to jest magnes i co warto o nim wiedzie\u0107? - Botland<\/title>\n<meta name=\"description\" content=\"Czy zastanawia\u0142e\u015b si\u0119, jak dok\u0142adnie dzia\u0142aj\u0105 magnesy i jakie ich rodzaje s\u0105 wykorzystywane w praktyce? 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