Qhov sib xyaw tsis sib xws ntawm magnetite, hlau, oxygen thiab lwm yam kab hauv lodestone, tsuas yog cov hlau nplaum tshwm sim, yog qhov ua rau nws mus tas li (nyuaj).Ntshiab homogeneous magnetite los yog hlau tsis ruaj khov tab sis ib ntus (mos) hlau nplaum.Ib qho zoo tagnrhohlau nplaum ruaj khovyog ib tug heterogeneous alloy nrog siab coercivity, lub ntsiab lus nws yog ib qho nyuaj rau demagnetize.Cov alloys muaj cov ntsiab lus nrog cov atoms uas tuaj yeem ua rau taw tes mus rau tib qho kev taw qhia (ferromagnetic) ua rau lawv muaj zog sib nqus.Tsuas yog peb-hlau, cobalt thiab npib tsib xee-ntawm 100 lub ntsiab lus nyob rau hauv lub rooj zaum yog ferromagnetic ntawm chav tsev kub.Alloys yog tsim magnetic los ntawm exposing rau hlau nplaum los yog electromagnets.
Tshem tawm ntawm lub suab nrov.
Siv cov txhuam kom sov cov ntsia hlau ntsia hlau hla lub qhov cub, tso cai rau cov atoms hauv cov ntsia hlau txav mus los ntawm kev ywj pheej.
Siv lub compass los txiav txim lub ntiaj teb cov hlau nplaum sab qaum teb thiab sab qab teb ncej.Muab cov ntsia hlau ntsia hlau rau hauv North-South kev taw qhia thiab tso rauhais lus hlau nplaumtsuas yog sab qaum teb ntawm tus ntsia thawv.
Ntaus tus ntsia hlau nrog rauj kom txog thaum nws txias, tsawg kawg yog 50 zaug, xyuas kom cov ntsia hlau tseem nyob rau sab qaum teb-sab qab teb.Cov atoms nyob rau hauv cov ntsia hlau steel yuav tsum shaken mus rau kab nrog cov hlau nplaum ntawm cov hlau nplaum nyob ze.
Tswv yim & Ceeb toom
Lwm yam khoom siv hauv tsev, xws li lub qhov cub microwave, kuj muajStrong Earth Magnetsuas tuaj yeem siv tsis siv lub suab nrov nrov hlau nplaum.Cov hlau nplaum muaj zog dua, qhov txiaj ntsig zoo dua.
Lub ntiaj teb magnetic teb ib leeg muaj peev xwm tsis muaj zog hlau nplaum hlau ntsia hlau, tsis tas siv lub suab nrov nrov hlau nplaum.
Xaiv cov khoom muaj zog ferromagnetic rau magnetize yuav ua tau zoo dua.
Cov menyuam yaus yuav tsum muaj kev saib xyuas cov neeg laus thaum ua qhov haujlwm no.
Cov hlau nplaum muaj peev xwm tshem tawm cov ntaub ntawv khaws cia hlau nplaum ntawm cov khoom xws li video tapes, hard drives thiab credit cards.
Post lub sij hawm: Lub Xya hli ntuj-18-2021