Cov hlau nplaum yog ib yam khoom uas tsim tau ib qho chaw sib nqus. Cov cuab yeej no tuaj yeem nqa tau ntau yam kev siv, xws li sensors, motors, thiab lwm yam. Cov hlau nplaum ntawm cov hlau nplaum yog hais txog qhov tshwm sim uas cov hlau nplaum tsim los ntawm cov hlau nplaum tom qab nws yog magnetized yog manifested ntawm qhov chaw.
Yog li, qhov sib txawv ntawm cov hlau nplaum thiab cov hlau nplaum nto hlau nplaum yog dab tsi?
Ua ntej tshaj plaws, cov hlau nplaum yog cov cuab yeej tseem ceeb ntawm cov hlau nplaum, uas piav txog lub peev xwm ntawm cov hlau nplaum kom nyiam thiab tawm tsam. Tshwj xeeb tshaj yog, thaum ob lub hlau nplaum nyob ze rau ib leeg, lawv yuav tsim ib lub zog, uas yog, attraction los yog repulsion. Qhov loj ntawm lub zog no nyob ntawm seb qhov sib nqus ntawm cov hlau nplaum muaj zog npaum li cas, thaum cov hlau nplaum ntog hlau nplaum tsuas yog qhov tshwm sim uas cov hlau nplaum tau tshwm sim rau saum npoo ntawm cov hlau nplaum, thiab nws tsis cuam tshuam cov hlau nplaum ntawm cov hlau nplaum nws tus kheej.
Qhov thib ob, cov hlau nplaum ntawm cov hlau nplaum yog txiav txim siab los ntawm cov hlau nplaum uas tsim los ntawm kev txav ntawm electrons hauv nws, thiab cov hlau nplaum ntawm cov khoom sib txawv kuj txawv. Piv txwv li, cov ntaub ntawv xws li hlau tuaj yeem sib nqus tau yooj yim, thaum cov ntaub ntawv xws li tooj liab thiab txhuas tsis yooj yim magnetized. Cov hlau nplaum nto magnetism ntawm ib tug hlau nplaum yog manifested los ntawm cov magnetic teb muaj li ntawm magnetic kab ntawm quab yuam. Qhov no magnetic teb tsuas yog hauv zos thiab tsuas yog tshwm sim ntawm qhov chaw ntawm cov hlau nplaum.
Thaum kawg, lub luag haujlwm ua los ntawm cov hlau nplaum ntawm cov hlau nplaum thiab cov hlau nplaum saum npoo hlau nplaum kuj txawv. Magnetism tso cai rau cov hlau nplaum nyiam los yog tawm tsam lwm yam khoom, yog li ua tau ntau yam kev ua haujlwm. Cov hlau nplaum saum npoo ntawm cov hlau nplaum feem ntau yog siv los qhia cov hlau nplaum sab qaum teb thiab muaj kev cuam tshuam kev faib tawm ntawm cov hlau nplaum.
