{"id":12021,"date":"2025-08-19T02:43:58","date_gmt":"2025-08-19T02:43:58","guid":{"rendered":"https:\/\/sinoextrud.com\/?p=12021"},"modified":"2025-08-19T02:43:58","modified_gmt":"2025-08-19T02:43:58","slug":"je-hlinik-magneticky-kov","status":"publish","type":"post","link":"https:\/\/sinoextrud.com\/cs\/is-aluminum-a-magnetic-metal\/","title":{"rendered":"Je hlin\u00edk magnetick\u00fd kov?"},"content":{"rendered":"<p><figure><img decoding=\"async\" src=\"https:\/\/sinoextrud.com\/wp-content\/uploads\/Extruded-Aluminum-Rail-System.webp\" alt=\"Leskl\u00fd extrudovan\u00fd hlin\u00edkov\u00fd profil zbl\u00edzka, ide\u00e1ln\u00ed pro v\u011bdeck\u00e1 a pr\u016fmyslov\u00e1 t\u00e9mata\"><figcaption>Profil hlin\u00edkov\u00e9 kolejnice s kovovou strukturou a vodivost\u00ed<\/figcaption><\/figure>\n<\/p>\n<p>Hlin\u00edk se leskne, je vodiv\u00fd a je v\u0161ude - ale pro\u010d se nep\u0159ichyt\u00ed k magnetu jako \u017eelezo? Zd\u00e1 se, \u017ee by m\u011bl. Toto podivn\u00e9 chov\u00e1n\u00ed je pro mnoh\u00e9 z\u00e1hadou.<\/p>\n<p><strong>Ne, hlin\u00edk nen\u00ed magnetick\u00fd kov. Je klasifikov\u00e1n jako paramagnetick\u00fd, co\u017e znamen\u00e1, \u017ee slab\u011b interaguje s magnetick\u00fdm polem, ale nezachov\u00e1v\u00e1 magnetismus ani nep\u0159itahuje magnety.<\/strong><\/p>\n<p>Poj\u010fme se pod\u00edvat na v\u011bdeck\u00fd z\u00e1klad tohoto chov\u00e1n\u00ed, na to, jak se hlin\u00edk chov\u00e1 v magnetick\u00e9m prost\u0159ed\u00ed a pro\u010d je to pro in\u017een\u00fdry, v\u00fdrobce a v\u011bdce st\u00e1le d\u016fle\u017eit\u00e9.<\/p>\n<h2>Co zp\u016fsobuje, \u017ee hlin\u00edk nen\u00ed magnetick\u00fd, p\u0159esto\u017ee je to kov?<\/h2>\n<p>Hlin\u00edk m\u00e1 mnoho stejn\u00fdch fyzik\u00e1ln\u00edch vlastnost\u00ed jako jin\u00e9 kovy, nap\u0159\u00edklad vodivost a pevnost. Pro\u010d se tedy chov\u00e1 tak odli\u0161n\u011b v bl\u00edzkosti magnet\u016f?<\/p>\n<p><strong>Hlin\u00edk je nemagnetick\u00fd, proto\u017ee jeho atomov\u00e1 struktura neobsahuje magnetick\u00e9 dom\u00e9ny, kter\u00e9 se vyskytuj\u00ed ve feromagnetick\u00fdch materi\u00e1lech. P\u0159esto\u017ee m\u00e1 nesp\u00e1rovan\u00e9 elektrony, nezachov\u00e1v\u00e1 magnetick\u00e9 pole ani na n\u011bj siln\u011b nereaguje.<\/strong><\/p>\n<h3>Pro\u010d k tomu doch\u00e1z\u00ed na atom\u00e1rn\u00ed \u00farovni<\/h3>\n<p>Kovy jako \u017eelezo jsou feromagnetick\u00e9, proto\u017ee obsahuj\u00ed mikroskopick\u00e9 magnetick\u00e9 dom\u00e9ny. Tyto dom\u00e9ny jsou oblasti, kde se magnetick\u00e9 momenty atom\u016f vyrovn\u00e1vaj\u00ed ve stejn\u00e9m sm\u011bru. P\u0159i vystaven\u00ed magnetick\u00e9mu poli se tyto dom\u00e9ny mohou vyrovnat a zachovat si sv\u016fj sm\u011br i po odstran\u011bn\u00ed pole.<\/p>\n<p>Hlin\u00edk se v\u0161ak chov\u00e1 jinak:<\/p>\n<table>\n<thead>\n<tr>\n<th>Majetek<\/th>\n<th>Feromagnetick\u00e9 (nap\u0159. \u017eelezo)<\/th>\n<th>Paramagnetick\u00e9 (nap\u0159. hlin\u00edk)<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Magnetick\u00e9 dom\u00e9ny<\/td>\n<td>Ano<\/td>\n<td>Ne<\/td>\n<\/tr>\n<tr>\n<td>Reakce na magnet<\/td>\n<td>Siln\u00fd<\/td>\n<td>Velmi slab\u00e9<\/td>\n<\/tr>\n<tr>\n<td>Zachov\u00e1v\u00e1 magnetismus<\/td>\n<td>Ano<\/td>\n<td>Ne<\/td>\n<\/tr>\n<tr>\n<td>Magnetick\u00fd moment<\/td>\n<td>Zarovn\u00e1no<\/td>\n<td>N\u00e1hodn\u00fd<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>P\u0159esto\u017ee hlin\u00edk m\u00e1 nesp\u00e1rovan\u00e9 elektrony, kter\u00e9 obvykle p\u0159isp\u00edvaj\u00ed k magnetismu, jsou tyto elektrony \u0161iroce rozm\u00edst\u011bny a neinteraguj\u00ed natolik siln\u011b, aby vytv\u00e1\u0159ely dom\u00e9ny. Proto se hlin\u00edk nem\u016f\u017ee v magnetick\u00e9m poli chovat jako \u017eelezo nebo nikl.<\/p>\n<div class=\"claim claim-false\" style=\"background-color: #f8e6e6; border-color: #f8e6e6; color: #dc143c;\"><p><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"24\" height=\"24\" viewbox=\"0 0 24 24\" fill=\"transparent\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"><path d=\"M20 13c0 5-3.5 7.5-7.66 8.95a1 1 0 0 1-.67-.01C7.5 20.5 4 18 4 13V6a1 1 0 0 1 1-1c2 0 4.5-1.2 6.24-2.72a1.17 1.17 0 0 1 1.52 0C14.51 3.81 17 5 19 5a1 1 0 0 1 1 1z\"\/><path d=\"m14.5 9.5-5 5\"\/><path d=\"m9.5 9.5 5 5\"\/><\/svg> <b>Hlin\u00edk si po vystaven\u00ed siln\u00e9mu magnetick\u00e9mu poli m\u016f\u017ee zachovat magnetismus.<\/b><span class='claim-true-or-false'>False<\/span><\/p><p class='claim-explanation'>Hlin\u00edk si nezachov\u00e1v\u00e1 magnetismus, proto\u017ee nem\u00e1 magnetick\u00e9 dom\u00e9nov\u00e9 struktury.<\/p><\/div>\n<div class=\"claim claim-true\" style=\"background-color: #e6f3e6; border-color: #e6f3e6; color: #2e8b57;\"><p><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"24\" height=\"24\" viewbox=\"0 0 24 24\" fill=\"transparent\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"><path d=\"M20 13c0 5-3.5 7.5-7.66 8.95a1 1 0 0 1-.67-.01C7.5 20.5 4 18 4 13V6a1 1 0 0 1 1-1c2 0 4.5-1.2 6.24-2.72a1.17 1.17 0 0 1 1.52 0C14.51 3.81 17 5 19 5a1 1 0 0 1 1 1z\"\/><path d=\"m9 12 2 2 4-4\"\/><\/svg> <b>Hlin\u00edk m\u00e1 nesp\u00e1rovan\u00e9 elektrony, kter\u00e9 mu dod\u00e1vaj\u00ed slabou magnetickou odezvu.<\/b><span class='claim-true-or-false'>Pravda<\/span><\/p><p class='claim-explanation'>Ano, proto je hlin\u00edk klasifikov\u00e1n jako paramagnetick\u00fd, a ne diamagnetick\u00fd.<\/p><\/div>\n<h2>Interaguje v\u016fbec hlin\u00edk s magnetick\u00fdm polem?<\/h2>\n<p>Hlin\u00edk se k magnet\u016fm nep\u0159itahuje - to v\u0161ak neznamen\u00e1, \u017ee magnetick\u00e9 pole zcela ignoruje. Ve skute\u010dnosti s nimi interaguje jemn\u00fdmi, ale d\u016fle\u017eit\u00fdmi zp\u016fsoby.<\/p>\n<p><strong>Ano, hlin\u00edk interaguje s magnetick\u00fdm polem. A\u010dkoli nep\u0159itahuje magnety, reaguje slab\u011b prost\u0159ednictv\u00edm paramagnetismu a viditeln\u011bji prost\u0159ednictv\u00edm v\u00ed\u0159iv\u00fdch proud\u016f, kdy\u017e je vystaven m\u011bn\u00edc\u00edm se magnetick\u00fdm pol\u00edm.<\/strong><\/p>\n<h3>Co se stane, kdy\u017e je hlin\u00edk v bl\u00edzkosti magnetick\u00e9ho pole<\/h3>\n<p>Kdy\u017e je hlin\u00edk um\u00edst\u011bn v magnetick\u00e9m poli:<\/p>\n<ul>\n<li>Pokud je pole <strong>statick\u00e9<\/strong> (nem\u011bnn\u00fd), reaguje jen velmi slab\u011b d\u00edky sv\u00e9 paramagnetick\u00e9 povaze.<\/li>\n<li>Pokud je pole <strong>zm\u011bna<\/strong> (nap\u0159\u00edklad kdy\u017e se v bl\u00edzkosti pohybuje magnet), m\u016f\u017ee hlin\u00edk vytv\u00e1\u0159et <strong>v\u00ed\u0159iv\u00e9 proudy<\/strong>. Tyto v\u00ed\u0159iv\u00e9 proudy p\u016fsob\u00ed proti pohybu magnetu v d\u016fsledku <strong>Lenz\u016fv z\u00e1kon<\/strong>.<\/li>\n<\/ul>\n<p>Tento efekt je patrn\u00fd zejm\u00e9na p\u0159i v\u011bdeck\u00fdch demonstrac\u00edch, kdy je siln\u00fd magnet pou\u0161t\u011bn skrz hlin\u00edkovou trubku. Magnet pad\u00e1 pomalu nikoli proto, \u017ee by ho hlin\u00edk p\u0159itahoval, ale proto, \u017ee v\u00ed\u0159iv\u00e9 proudy vytv\u00e1\u0159ej\u00ed magnetick\u00e9 pole, kter\u00e9 se p\u00e1du br\u00e1n\u00ed.<\/p>\n<h3>Pro\u010d je to d\u016fle\u017eit\u00e9 v re\u00e1ln\u00e9m in\u017een\u00fdrstv\u00ed<\/h3>\n<p>Brzd\u011bn\u00ed v\u00ed\u0159iv\u00fdmi proudy se pou\u017e\u00edv\u00e1 v:<\/p>\n<ul>\n<li><strong>Horsk\u00e9 dr\u00e1hy<\/strong> pro bezpe\u010dn\u00e9 a tich\u00e9 brzd\u011bn\u00ed<\/li>\n<li><strong>Magnetick\u00e9 levita\u010dn\u00ed vlaky<\/strong><\/li>\n<li><strong>Induk\u010dn\u00ed topn\u00e9 syst\u00e9my<\/strong><\/li>\n<\/ul>\n<p>P\u0159esto\u017ee hlin\u00edk nen\u00ed magnetick\u00fd v obvykl\u00e9m smyslu, jeho schopnost interagovat s dynamick\u00fdmi magnetick\u00fdmi poli je velmi u\u017eite\u010dn\u00e1.<\/p>\n<table>\n<thead>\n<tr>\n<th>Typ magnetick\u00e9ho pole<\/th>\n<th>Hlin\u00edkov\u00e1 odezva<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Statick\u00e9<\/td>\n<td>Slab\u00e1 p\u0159ita\u017elivost<\/td>\n<\/tr>\n<tr>\n<td>St\u011bhov\u00e1n\u00ed \/ zm\u011bna<\/td>\n<td>Generuje v\u00ed\u0159iv\u00e9 proudy<\/td>\n<\/tr>\n<tr>\n<td>St\u0159\u00eddav\u00fd (AC)<\/td>\n<td>Siln\u011bj\u0161\u00ed v\u00ed\u0159iv\u00e9 efekty<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<div class=\"claim claim-true\" style=\"background-color: #e6f3e6; border-color: #e6f3e6; color: #2e8b57;\"><p><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"24\" height=\"24\" viewbox=\"0 0 24 24\" fill=\"transparent\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"><path d=\"M20 13c0 5-3.5 7.5-7.66 8.95a1 1 0 0 1-.67-.01C7.5 20.5 4 18 4 13V6a1 1 0 0 1 1-1c2 0 4.5-1.2 6.24-2.72a1.17 1.17 0 0 1 1.52 0C14.51 3.81 17 5 19 5a1 1 0 0 1 1 1z\"\/><path d=\"m9 12 2 2 4-4\"\/><\/svg> <b>Hlin\u00edk p\u0159i p\u016fsoben\u00ed pohybliv\u00fdch magnetick\u00fdch pol\u00ed vytv\u00e1\u0159\u00ed odpudiv\u00e9 s\u00edly.<\/b><span class='claim-true-or-false'>Pravda<\/span><\/p><p class='claim-explanation'>To je zp\u016fsobeno v\u00ed\u0159iv\u00fdmi proudy, kter\u00e9 p\u016fsob\u00ed proti pohybu magnetick\u00e9ho pole.<\/p><\/div>\n<div class=\"claim claim-false\" style=\"background-color: #f8e6e6; border-color: #f8e6e6; color: #dc143c;\"><p><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"24\" height=\"24\" viewbox=\"0 0 24 24\" fill=\"transparent\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"><path d=\"M20 13c0 5-3.5 7.5-7.66 8.95a1 1 0 0 1-.67-.01C7.5 20.5 4 18 4 13V6a1 1 0 0 1 1-1c2 0 4.5-1.2 6.24-2.72a1.17 1.17 0 0 1 1.52 0C14.51 3.81 17 5 19 5a1 1 0 0 1 1 1z\"\/><path d=\"m14.5 9.5-5 5\"\/><path d=\"m9.5 9.5 5 5\"\/><\/svg> <b>Hlin\u00edk s magnetick\u00fdm polem v\u016fbec neinteraguje.<\/b><span class='claim-true-or-false'>False<\/span><\/p><p class='claim-explanation'>Interaguje slab\u011b a vytv\u00e1\u0159\u00ed viditeln\u00e9 efekty v dynamick\u00fdch pol\u00edch.<\/p><\/div>\n<h2>Lze za zvl\u00e1\u0161tn\u00edch podm\u00ednek zmagnetizovat hlin\u00edk?<\/h2>\n<p>Hlin\u00edk je kov, vede elekt\u0159inu a reaguje na pole - je tedy mo\u017en\u00e9 ho zmagnetizovat, pokud se budeme dostate\u010dn\u011b sna\u017eit?<\/p>\n<p><strong>Ne, hlin\u00edk nelze zmagnetizovat za \u017e\u00e1dn\u00fdch podm\u00ednek. Nem\u00e1 magnetickou dom\u00e9novou strukturu pot\u0159ebnou pro permanentn\u00ed magnetismus, a to ani v siln\u00fdch vn\u011bj\u0161\u00edch pol\u00edch.<\/strong><\/p>\n<h3>A co extr\u00e9mn\u011b siln\u00e9 magnety?<\/h3>\n<p>Dokonce i v magnetick\u00e9m prost\u0159ed\u00ed s vysokou intenzitou, jako jsou p\u0159\u00edstroje MRI nebo laboratorn\u00ed supravodiv\u00e9 magnety, je hlin\u00edk:<\/p>\n<ul>\n<li>M\u00e1 <strong>nezarovn\u00e1vat do dom\u00e9n<\/strong><\/li>\n<li>M\u00e1 <strong>se nestane permanentn\u00edm magnetem<\/strong><\/li>\n<li>Pouze expon\u00e1ty <strong>do\u010dasn\u00e9, slab\u00e9<\/strong> chov\u00e1n\u00ed v d\u016fsledku indukovan\u00fdch proud\u016f nebo slab\u00e9 paramagnetick\u00e9 p\u0159ita\u017elivosti<\/li>\n<\/ul>\n<p>Toto do\u010dasn\u00e9 chov\u00e1n\u00ed zmiz\u00ed v okam\u017eiku, kdy je magnetick\u00e9 pole odstran\u011bno.<\/p>\n<h3>Pro\u010d se v\u00fdrobci st\u00e1le staraj\u00ed<\/h3>\n<p>V\u00fdrobci a konstrukt\u00e9\u0159i v\u00fdrobk\u016f mus\u00ed br\u00e1t v \u00favahu <strong>nemagnetick\u00e9<\/strong> povaha hlin\u00edku:<\/p>\n<ul>\n<li>Je ide\u00e1ln\u00ed v <strong>elektronika<\/strong> a <strong>zdravotnick\u00e9 prost\u0159edky<\/strong>, kde by magnetick\u00e9 ru\u0161en\u00ed mohlo zp\u016fsobit \u0161kody.<\/li>\n<li>Pou\u017e\u00edv\u00e1 se v <strong>pouzdra pro pevn\u00e9 disky<\/strong> a <strong>N\u00e1stroje kompatibiln\u00ed s MRI<\/strong> z tohoto d\u016fvodu.<\/li>\n<li>Je to cenn\u00e9 v <strong>leteck\u00e9 a automobilov\u00e9 d\u00edly<\/strong> kter\u00e9 mus\u00ed zabr\u00e1nit ru\u0161en\u00ed naviga\u010dn\u00edch nebo \u0159\u00eddic\u00edch syst\u00e9m\u016f.<\/li>\n<\/ul>\n<p>I v obrann\u00fdch aplikac\u00edch se vol\u00ed nemagnetick\u00e9 kovy, aby se zabr\u00e1nilo spu\u0161t\u011bn\u00ed magnetick\u00fdch min nebo detek\u010dn\u00edch syst\u00e9m\u016f.<\/p>\n<div class=\"claim claim-false\" style=\"background-color: #f8e6e6; border-color: #f8e6e6; color: #dc143c;\"><p><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"24\" height=\"24\" viewbox=\"0 0 24 24\" fill=\"transparent\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"><path d=\"M20 13c0 5-3.5 7.5-7.66 8.95a1 1 0 0 1-.67-.01C7.5 20.5 4 18 4 13V6a1 1 0 0 1 1-1c2 0 4.5-1.2 6.24-2.72a1.17 1.17 0 0 1 1.52 0C14.51 3.81 17 5 19 5a1 1 0 0 1 1 1z\"\/><path d=\"m14.5 9.5-5 5\"\/><path d=\"m9.5 9.5 5 5\"\/><\/svg> <b>Hlin\u00edk se m\u016f\u017ee st\u00e1t permanentn\u00edm magnetem uvnit\u0159 p\u0159\u00edstroje MRI.<\/b><span class='claim-true-or-false'>False<\/span><\/p><p class='claim-explanation'>Hlin\u00edk z\u016fst\u00e1v\u00e1 nemagnetick\u00fd bez ohledu na intenzitu magnetick\u00e9ho pole.<\/p><\/div>\n<div class=\"claim claim-true\" style=\"background-color: #e6f3e6; border-color: #e6f3e6; color: #2e8b57;\"><p><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"24\" height=\"24\" viewbox=\"0 0 24 24\" fill=\"transparent\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"><path d=\"M20 13c0 5-3.5 7.5-7.66 8.95a1 1 0 0 1-.67-.01C7.5 20.5 4 18 4 13V6a1 1 0 0 1 1-1c2 0 4.5-1.2 6.24-2.72a1.17 1.17 0 0 1 1.52 0C14.51 3.81 17 5 19 5a1 1 0 0 1 1 1z\"\/><path d=\"m9 12 2 2 4-4\"\/><\/svg> <b>Hlin\u00edk je d\u00edky sv\u00e9 nemagnetick\u00e9 vlastnosti u\u017eite\u010dn\u00fd v citliv\u00fdch za\u0159\u00edzen\u00edch.<\/b><span class='claim-true-or-false'>Pravda<\/span><\/p><p class='claim-explanation'>Zabra\u0148uje ru\u0161en\u00ed za\u0159\u00edzen\u00ed, jako jsou skenery magnetick\u00e9 rezonance a elektronick\u00e9 p\u0159\u00edstroje.<\/p><\/div>\n<h2>Pro\u010d je hlin\u00edk pova\u017eov\u00e1n za paramagnetick\u00fd, a ne za feromagnetick\u00fd?<\/h2>\n<p>Toto rozli\u0161en\u00ed mnoho lid\u00ed mate, zejm\u00e9na proto, \u017ee hlin\u00edk je st\u00e1le kov. Term\u00edny paramagnetick\u00fd a feromagnetick\u00fd se v\u0161ak vztahuj\u00ed k chov\u00e1n\u00ed na atom\u00e1rn\u00ed \u00farovni.<\/p>\n<p><strong>Hlin\u00edk je paramagnetick\u00fd, proto\u017ee m\u00e1 nesp\u00e1rovan\u00e9 elektrony, kter\u00e9 slab\u011b reaguj\u00ed na vn\u011bj\u0161\u00ed magnetick\u00e9 pole. Nen\u00ed feromagnetick\u00fd, proto\u017ee postr\u00e1d\u00e1 magnetick\u00e9 dom\u00e9ny, kter\u00e9 se vyrovn\u00e1vaj\u00ed a udr\u017euj\u00ed magnetismus.<\/strong><\/p>\n<h3>Rozd\u011blme si tyto dva typy:<\/h3>\n<table>\n<thead>\n<tr>\n<th>Majetek<\/th>\n<th>Paramagnetick\u00fd (hlin\u00edk)<\/th>\n<th>Feromagnetick\u00e9 (\u017eelezo)<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Atomov\u00fd magnetick\u00fd moment<\/td>\n<td>Slab\u00e9, do\u010dasn\u00e9<\/td>\n<td>Siln\u00e9, slad\u011bn\u00e9<\/td>\n<\/tr>\n<tr>\n<td>Struktura magnetick\u00e9 dom\u00e9ny<\/td>\n<td>\u017d\u00e1dn\u00e9<\/td>\n<td>Sou\u010dasnost<\/td>\n<\/tr>\n<tr>\n<td>Zachov\u00e1v\u00e1 magnetismus<\/td>\n<td>Ne<\/td>\n<td>Ano<\/td>\n<\/tr>\n<tr>\n<td>Typick\u00e9 magnetick\u00e9 chov\u00e1n\u00ed<\/td>\n<td>Slab\u011b p\u0159itahov\u00e1n<\/td>\n<td>Siln\u011b p\u0159itahuje<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>Paramagnetismus v ka\u017edodenn\u00edm \u017eivot\u011b<\/h3>\n<p>V\u011bt\u0161ina paramagnetick\u00fdch materi\u00e1l\u016f je:<\/p>\n<ul>\n<li>Slab\u00e1 reakce na magnety<\/li>\n<li>Nelep\u00ed se na permanentn\u00ed magnety<\/li>\n<li>T\u011b\u017eko zjistiteln\u00e9, pokud se nenach\u00e1z\u00ed v laborato\u0159i.<\/li>\n<\/ul>\n<p>Mezi dal\u0161\u00ed paramagnetick\u00e9 prvky pat\u0159\u00ed <strong>ho\u0159\u010d\u00edk<\/strong>, <strong>lithium<\/strong>a <strong>tantal<\/strong>-kter\u00e9 se chovaj\u00ed podobn\u011b jako hlin\u00edk.<\/p>\n<h3>Pro\u010d to ovliv\u0148uje zp\u016fsob navrhov\u00e1n\u00ed syst\u00e9m\u016f<\/h3>\n<p>Poznatky o paramagnetick\u00e9 vlastnosti hlin\u00edku pom\u00e1haj\u00ed konstrukt\u00e9r\u016fm:<\/p>\n<ul>\n<li>V\u00fdb\u011br spr\u00e1vn\u00fdch materi\u00e1l\u016f pro <strong>elektromagnetick\u00e9 st\u00edn\u011bn\u00ed<\/strong><\/li>\n<li>Sestavte <strong>bezpe\u010dn\u00e9 sk\u0159\u00edn\u011b<\/strong> pro elektroniku<\/li>\n<li>Vyhn\u011bte se z\u00e1sah\u016fm do <strong>naviga\u010dn\u00ed, senzorov\u00e9 a komunika\u010dn\u00ed za\u0159\u00edzen\u00ed<\/strong><\/li>\n<\/ul>\n<p>Vysv\u011btluje tak\u00e9, pro\u010d hlin\u00edk nen\u00ed vhodn\u00fd pro v\u00fdrobu magnet\u016f nebo syst\u00e9m\u016f citliv\u00fdch na magnety.<\/p>\n<div class=\"claim claim-false\" style=\"background-color: #f8e6e6; border-color: #f8e6e6; color: #dc143c;\"><p><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"24\" height=\"24\" viewbox=\"0 0 24 24\" fill=\"transparent\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"><path d=\"M20 13c0 5-3.5 7.5-7.66 8.95a1 1 0 0 1-.67-.01C7.5 20.5 4 18 4 13V6a1 1 0 0 1 1-1c2 0 4.5-1.2 6.24-2.72a1.17 1.17 0 0 1 1.52 0C14.51 3.81 17 5 19 5a1 1 0 0 1 1 1z\"\/><path d=\"m14.5 9.5-5 5\"\/><path d=\"m9.5 9.5 5 5\"\/><\/svg> <b>Hlin\u00edk je pova\u017eov\u00e1n za feromagnetick\u00fd, proto\u017ee m\u00e1 voln\u00e9 elektrony.<\/b><span class='claim-true-or-false'>False<\/span><\/p><p class='claim-explanation'>Voln\u00e9 elektrony neur\u010duj\u00ed feromagnetismus - rozhoduje dom\u00e9nov\u00e9 uspo\u0159\u00e1d\u00e1n\u00ed, kter\u00e9 hlin\u00edk postr\u00e1d\u00e1.<\/p><\/div>\n<div class=\"claim claim-true\" style=\"background-color: #e6f3e6; border-color: #e6f3e6; color: #2e8b57;\"><p><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"24\" height=\"24\" viewbox=\"0 0 24 24\" fill=\"transparent\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"><path d=\"M20 13c0 5-3.5 7.5-7.66 8.95a1 1 0 0 1-.67-.01C7.5 20.5 4 18 4 13V6a1 1 0 0 1 1-1c2 0 4.5-1.2 6.24-2.72a1.17 1.17 0 0 1 1.52 0C14.51 3.81 17 5 19 5a1 1 0 0 1 1 1z\"\/><path d=\"m9 12 2 2 4-4\"\/><\/svg> <b>Hlin\u00edk je paramagnetick\u00fd, proto\u017ee m\u00e1 nesp\u00e1rovan\u00e9 elektrony a nem\u00e1 dom\u00e9novou strukturu.<\/b><span class='claim-true-or-false'>Pravda<\/span><\/p><p class='claim-explanation'>To zp\u016fsobuje slabou, do\u010dasnou reakci na vn\u011bj\u0161\u00ed pole.<\/p><\/div>\n<h2>Z\u00e1v\u011br<\/h2>\n<p>Hlin\u00edk nen\u00ed magnetick\u00fd kov. Je paramagnetick\u00fd, co\u017e znamen\u00e1, \u017ee slab\u011b reaguje na magnetick\u00e9 pole, ale nem\u016f\u017ee b\u00fdt zmagnetizov\u00e1n nebo p\u0159itahovat magnety jako \u017eelezo. Toto jedine\u010dn\u00e9 chov\u00e1n\u00ed, a\u010dkoli je nepatrn\u00e9, m\u00e1 \u0161irok\u00e9 vyu\u017eit\u00ed ve stroj\u00edrenstv\u00ed, v\u00fdrob\u011b a designu.<\/p>","protected":false},"excerpt":{"rendered":"<p>Aluminum rail profile showing metallic structure and conductivity Aluminum is shiny, conductive, and everywhere\u2014but why doesn&#8217;t it stick to a magnet like iron? It feels like it should. This strange behavior puzzles many. No, aluminum is not a magnetic metal. It is classified as paramagnetic, which means it interacts weakly with magnetic fields but does [&hellip;]<\/p>\n","protected":false},"author":6,"featured_media":8370,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_seopress_titles_title":"","_seopress_titles_desc":"","_seopress_robots_index":"","_seopress_robots_follow":"","_seopress_robots_imageindex":"","_seopress_robots_snippet":"","_seopress_robots_primary_cat":"none","_seopress_robots_breadcrumbs":"","_seopress_robots_freeze_modified_date":"","_seopress_robots_custom_modified_date":"","_seopress_robots_canonical":"","_seopress_social_fb_title":"","_seopress_social_fb_desc":"","_seopress_social_fb_img":"","_seopress_social_fb_img_attachment_id":0,"_seopress_social_fb_img_width":0,"_seopress_social_fb_img_height":0,"_seopress_social_twitter_title":"","_seopress_social_twitter_desc":"","_seopress_social_twitter_img":"","_seopress_social_twitter_img_attachment_id":0,"_seopress_social_twitter_img_width":0,"_seopress_social_twitter_img_height":0,"_seopress_redirections_value":"","_seopress_redirections_enabled":"","_seopress_redirections_enabled_regex":"","_seopress_redirections_logged_status":"both","_seopress_redirections_param":"","_seopress_redirections_type":301,"_seopress_analysis_target_kw":"","_seopress_news_disabled":"","_seopress_video_disabled":"","_seopress_video":[],"_seopress_pro_schemas_manual":[],"_seopress_pro_rich_snippets_disable_all":"","_seopress_pro_rich_snippets_disable":[],"_seopress_pro_schemas":[],"footnotes":""},"categories":[1],"tags":[],"class_list":["post-12021","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-custom-mold"],"meta_box":{"post-to-quiz_to":[]},"_links":{"self":[{"href":"https:\/\/sinoextrud.com\/cs\/wp-json\/wp\/v2\/posts\/12021","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sinoextrud.com\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/sinoextrud.com\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/sinoextrud.com\/cs\/wp-json\/wp\/v2\/users\/6"}],"replies":[{"embeddable":true,"href":"https:\/\/sinoextrud.com\/cs\/wp-json\/wp\/v2\/comments?post=12021"}],"version-history":[{"count":0,"href":"https:\/\/sinoextrud.com\/cs\/wp-json\/wp\/v2\/posts\/12021\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/sinoextrud.com\/cs\/wp-json\/wp\/v2\/media\/8370"}],"wp:attachment":[{"href":"https:\/\/sinoextrud.com\/cs\/wp-json\/wp\/v2\/media?parent=12021"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/sinoextrud.com\/cs\/wp-json\/wp\/v2\/categories?post=12021"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/sinoextrud.com\/cs\/wp-json\/wp\/v2\/tags?post=12021"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}