Magnet Classification

Cov hlau nplaum tuaj yeem nyiam hlau, npib tsib xee, cobalt thiab lwm yam hlau, feem ntau hu ua hlau nplaum. Nws tuaj yeem muab faib ua cov hlau nplaum ruaj khov thiab cov hlau nplaum uas muaj hlau nplaum tsuas yog thaum muaj zog. Yog tias cov hlau nplaum tau ua rau hauv pas nrig lossis rab koob thiab raug tshem tawm, nws yuav taw tes rau lub ntiaj teb sab qab teb thiab sab qaum teb ncej. Cov hlau nplaum tau muab faib ua cov hlau nplaum loj thiab cov hlau nplaum me.
Cov hlau nplaum loj Cov hlau nplaum yog siv dav, thiab cov hlau nplaum yog siv los ua cranes rau kev thauj cov hlau. Thaum hluav taws xob, nws dhau los ua cov hlau nplaum muaj zog, yog li nws tuaj yeem nyiam cov hlau hnyav. Tsuas yog txiav tawm lub zog thaum muab cov hlau.
Cov hlau nplaum me me Piv nrog cov hlau nplaum loj, lub compass tshwm me me, lub teeb, thiab tsis muaj zog ntau. Lub luag haujlwm ntawm lub compass tsis yog kom nyiam hlau, tab sis kom muaj kev cuam tshuam lub zog sib nqus ntawm lub ntiaj teb.
Cov cuab yeej ntawm cov hlau nplaum nyiam hlau, cobalt, nickel thiab lwm yam khoom yog hu ua hlau nplaum. Qhov chaw muaj zog magnetically ntawm ob qho kawg ntawm cov hlau nplaum yog hu ua magnetic ncej, ib kawg yog sab qaum teb ncej (N ncej), thiab lwm qhov kawg yog sab qab teb ncej (S ncej). Kev sim tau ua pov thawj tias tib-poj niam txiv neej sib nqus sib nqus sib nqus sib nqus, thiab cov sib nqus sib nqus sib nqus sib nqus sib nqus.
Muaj ntau cov hlau nplaum qub uas muaj ob qhov sib nqus sib nqus hauv cov hlau. Thaum tsis muaj qhov sib nqus sab nraud, cov hlau nplaum qub no tau teeb tsa hauv qhov tsis sib xws, thiab lawv cov hlau nplaum sib cais, 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 zoo nyob rau hauv qhov kev txiav txim ntawm cov hlau nplaum, kom qhov kawg ze ntawm cov hlau nplaum muaj qhov sib txawv polarity rau cov hlau nplaum thiab sib nyiam. Qhov no qhia tau hais tias cov hlau tuaj yeem sib nqus los ntawm cov hlau nplaum vim muaj cov hlau nplaum qub. 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.