Vim li cas cov hlau nplaum tsis tuaj yeem nyiam tooj liab

Nyob rau niaj hnub no ntau ntau ntawm cov ntawv thov hlau nplaum, vim li cas cov hlau nplaum tsis tuaj yeem nyiam tooj liab? Ua ntej tshaj plaws, cov hlau nplaum muaj qhov cuam tshuam rau txhua tus khub hlau,

tsis muaj kev zam. Tab sis muaj peb yam xwm txheej. Cov hlau tau muab faib ua peb hom: paramagnets, diamagnetics, thiab ferromagnets.

1. Paramagnets: tuaj yeem nyiam me ntsis los ntawm cov hlau nplaum.

2. Diamagnetics: tuaj yeem hloov me ntsis los ntawm cov hlau nplaum.

3. Ferromagnetics: tuaj yeem nyiam cov hlau nplaum.

Tsuas muaj peb hom ferromagnets: hlau, cobalt, thiab npib tsib xee. Tus so yog paramagnets los yog diamagnetics.

Kuj tseem muaj lawv cov alloys, uas nws cov khoom sib nqus yog ze rau ferromagnets hauv ntau qib.

Nickel-muaj stainless hlau tuaj yeem ua tau (muaj zog) nyiam los ntawmhlau nplaum ruaj khov.

Nickel-free stainless hlau (feem ntau muaj chromium) reacts tsis muaj zog rau cov hlau no thiab tsis yooj yim pom. Cov tom kawg muaj zog dua vim nws muaj chromium. Lub qub yog dab tsi feem ntau hu ua stainless hlau.

Tshem tawm aluminium thiab tooj liab nrog ib txoj hlua nyias ntev thiab ua kom lawv tseem tsis muaj viav vias. Siv cov hlau nplaum maj mam txav mus rau aluminium lossis tooj liab kab rov tav, thiab koj yuav pom tias lawv yuav nyiam me ntsis los yog rov ua dua.

Yog li lawv yog paramagnets thiab antimagnets feem. Yog tias cov hlau nplaum tau ua rau hauv tus pas nrig lossis rab koob thiab dai, nws yuav taw tes rau South Ncej thiab North Ncej ntawm lub ntiaj teb.

Cov hlau nplaum tau muab faib ua cov hlau nplaum loj thiab cov hlau nplaum me. Cov hlau nplaum loj yog dav siv, xws li electromagnets, uas yog tsim rau hauv cranes rau thauj hlau. Tom qab siv lub zog, lawv dhau los ua cov hlau nplaum uas muaj zog sib nqus,

yog li lawv tuaj yeem nyiam cov hlau hnyav. Thaum muab cov hlau, tsuas yog txiav tawm lub hwj chim. Cov hlau nplaum me Piv nrog cov hlau nplaum loj, lub compass me me thiab lub teeb, thiab nws cov khoom sib nqus kuj tseem muaj zog dua. Lub luag haujlwm ntawm lub compass tsis yog kom nyiam hlau, tab sis xav txog lub zog sib nqus ntawm lub ntiaj teb. Cov cuab yeej ntawm cov hlau nplaum nyiam cov khoom xws li hlau, cobalt, thiab npib tsib xee hu ua hlau nplaum.

Cov cheeb tsam uas muaj zog sib nqus ntawm ob qho kawg ntawm cov hlau nplaum yog hu ua magnetic ncej, ib kawg yog North Ncej (N ncej) thiab lwm qhov kawg yog South Ncej (S ncej). Cov kev sim tau pom tias zoo li cov ncej tawm tsam ib leeg thiab cov ncej sib txawv nyiam ib leeg. Muaj ntau cov hlau nplaum tseem ceeb nrog ob tus ncej sib txawv hauv cov hlau. Thaum tsis muaj qhov sib nqus sab nraud, cov hlau nplaum tseem ceeb no tau teeb tsa hauv kev tsis sib haum xeeb, lawv cov hlau nplaum sib cais tawm, thiab lawv tsis qhia cov hlau nplaum rau sab nraud. Thaum cov hlau raug coj los ze rau ntawm cov hlau nplaum, cov hlau nplaum qub no tau zoo nyob rau hauv qhov kev txiav txim ntawm cov hlau nplaum, kom qhov kawg nyob ze ntawm cov hlau nplaum muaj qhov polarity opposite rau cov hlau nplaum thiab sib nyiam.

Qhov no qhia tau hais tias hlau tuaj yeem sib nqus los ntawm lub ntiaj teb tsis tshua muaj hlau nplaum lossis lwm yam hlau nplaum ruaj khov vim muaj cov hlau nplaum qub. Txawm li cas los xij, cov hlau xws li tooj liab thiab txhuas tsis muaj cov qauv hlau nplaum qub, yog li lawv tsis tuaj yeem nyiam los ntawm cov hlau nplaum.