Yuav ua li cas yuav ua rau ib tug magnet?

Peb muaj tag nrho cov accustomed mus rau qhov no uncomplicated kev kawm, xws li ib tus hlau nplaum. Nyob rau hauv lub neej txhua hnub nws yog feem ntau siv los ntawm tus neeg vim hais tias nws muaj peev xwm ua rau neeg nyiam tej khoom me me los ntawm ib tug tej yam hlau. Nyob rau hauv tas li ntawd, cov hlau nplaum yog lug siv nyob rau hauv ntau lub teb, piv txwv li, nyob rau hauv qhuav ntawm hluav taws xob. Nyob rau hauv qhov tseeb, lub electrification tsis yog lawv xav yuav tsis yooj yim sua. Hlau nplaum yog cov tub ntxhais eletromagnitov - pab kiag li lawm uas ua hluav taws xob. Tab sis nws yog tseem tsis yog txhua txhua. Nyob rau hauv peb lub cev biotoki kuj muab sawv mus rau lub magnetic teb kab. Peb ntiaj chaw, peb yuav hais tias - nws yog ib tug loj loj xiav magnet, txij li thaum generates enormous hwj chim ntawm attraction. Muaj tej qhov chaw uas cia li yuav tsum tau siv ib tug muaj zog sib nqus teb. Piv txwv li, raising sunken ships, fusion thiab tshaj.

Cov neeg nyob rau hauv ancient lub sij hawm kawm txog cov hlau nplaum thiab lawv lub zog thiab pib ua ntaub ntawv thov rau lawv. Txawm li cas los, nyob rau hauv cov hnub nws cia li daim ntawm magnetite, los yog lodestone, raws li lawv yog tam sim no hu ua. Tus thawj monuments yos txiv neej nrog lawv twb nrhiav tau thaum excavations nyob rau hauv lub teb chaws ntawm Central America. Qhov no duab puab tau carved los ntawm loj loj blocks ntawm no ib yam tsiaj, vim hais tias ntawm lawv cov zoo, soj ntsuam hu lawv "muaj roj me nyuam tub". Sib Nqus teb kab txuas cov nuj nqis thiab yog hais tias lawv tuaj tawm ntawm lub plab. Nyob rau hauv tas li ntawd, ib tug natural magnet thiab nws cov khoom no piav nyob rau hauv ancient Suav thawj. Qhov no cov ntaub ntawv uas, hlau ore, hlau oxides koom thiab muaj cov cuab yeej ntawm attracting ntau yam ntawm hlau los yog hlau cov khoom. Nws siv rau centuries. Tab sis thaum lub sij hawm, qhov zoo tshaj ntawm cov hlau ore ceased kom los siav tib neeg xav tau kev pab. Nrog rau zus tau tej cov nqe lus nug yog ua li cas yuav ua rau cov hlau nplaum muaj zog thiab ntau txhim khu kev qha. Maj mam sawv raug technology ntawm cov khoom cua hlau nplaum.

Koj puas tau xav txog yuav ua li cas yuav ua rau ib tug magnet? seb lawv tsev heev dua lwm yam nyob rau ntawm lub lub Hoobkas, los yog tej zaum tsim kom muaj ib txheej thaum ub txoj kev? Nyob rau hauv no tsab xov xwm, wb tham txog yuav ua li cas yuav ua rau ib tug magnet nyob rau hauv tsev.

Wb pib, raws li lawv hais tias, los ntawm lub qhov cub. Tag nrho cov ntaub ntawv uas muaj tsawg kawg yog ib co muaj peev xwm magnetization, yog magnetically los yog magnetically. Yuav ua li cas yog cov npe ntawm cov ntaub ntawv? Thawj poob zog es sai sai nyiam cov khoom, thiab lub thib ob - kom lawv, thiab, raws li ib tug txoj cai, rau ib ntev lub sij hawm. Ua ntej yuav ua li cas yuav ua rau ib tug magnet ua nws tsim nyog los xaiv txoj cai khoom. Raws li yuav pom los ntawm cov saum toj no, tsis yog txhua txhua cov ntaub ntawv uas rau no mus kom ze.

Yog hais tias peb coj ib tug muaj zog hlau nplaum thiab tuav nws nyob rau hauv cov hlau bar, ces qhov no yog txaus rau magnetize kev kawm. Tsis tas li ntawd, Yog hais tias koj pheej qhib thiab kaw sai sai lub loj heev steel txiab, lawv muaj ib tug ntawm attracting me me hlau tej khoom. Thiab nws mas yuav kis tau tej khoom vaj tse yuav siv tau dua, yog li ntawd, piv txwv li, kom tau tawm ntawm cov kab nrib pleb me me steel qhov chaw.

Feem ntau, ib tug mus tas magnet, uas yog ua los ntawm magnetizing ib daim hlau, tsis yog li ntawd ntev koom tes nws lub zog. Raws li ib tug txoj cai, nws yog txaus rau thaum tshav kub kub mus rau ib tug tej yam kub los yog ntaus rau tej khoom nto - thiab qhov ntau nws yuav tsis kos ib yam dab tsi.

Lub sib nqus hloov nrog rau qhov sib ntxiv ntawm tej hlau sib txuas. Cov no yog cov additives uas hloov lub hlau mus rau hauv hlau. Steels uas yuav tawv, feem ntau yog ib tug nyuaj magnetic cov khoom, thiab yog li tej zaum yuav pib cov ntaub ntawv uas los ua ib tug magnet. Feem ntau, stainless steel yog tsis muaj peev xwm tawv thiab cov khoom muaj tsis nyiam hlau.

Tam sim no ncaj qha txoj kev ua rau teb cov lus nug: yuav ua li cas yuav ua rau ib tug magnet? Nws tsis yog li ntawd tsis yooj yim. Yuav ua li cas yuav ua rau ib tug haib magnet? Ua li no koj yuav tsum tau: ib tug bar ntawm tawv hlau thiab lub inductor. Nyob rau qhov luaj li cas ntawm ib daim hlau yuav tsum xws li mus kiag li haum hauv koj lub lus. Yog hais tias tam sim no uas koj siv - los ntawm lub network, tig lub fuse nyob rau hauv lub Circuit Court los mus tiv thaiv luv luv-circuiting.

Tsis tsuas yog hlau los yog hlau yog siv los muab qhov kev kawm tej khoom ntiag tug nyiam hlau. Rau lub hom phiaj no tej zaum noj alnico - tshwj xeeb hlau ua los ntawm ob peb co. Tab sis feem ntau siv rau lub hom phiaj no ferrites. Ferrites yog hlau oxides rau hauv cov hmoov daim ntawv no, uas yog tov nrog tej yam additives. Nws ferrite hlau nplaum yog cov feem ntau yooj yim, lawv yuav tsum tau muab yam zoo. Txawm li cas los, feem ntau hwj chim yog cov hlau nplaum, uas tau ua los ntawm ib tug tshwj xeeb sib tov ntawm neodymium, hlau thiab boron.