1. Muab cov hlau nplaum tso rau hauv seem hlau (los yog tus pin) thiab rub tawm. Cov hlau nplaum hluav taws kub (lossis lub koob) raws li qhia hauv daim duab 3.22-1.
2. Cov hlau nplaum yog tso rau hauv cov ntaub ntawv hlau (lossis lub koob) ntawm cov khoom siv (xws li ntoo, iav), thiab cov hlau nplaum tseem muaj hlau nqus dej.
3. Muab cov hlau nplaum tso rau hauv ntoo chips lossis tooj npiv tooj liab (hmoov). Hlau nplaum tsis tuaj yeem nqus cov ntoo lossis tooj.
Saib xyuas cov ntsiab lus tseem ceeb: Ob qho tag nrho ntawm cov hlau nplaum nyiam ntau hlau cov ntaub ntawv lossis lub koob, tab sis lawv tsis tuaj yeem nyiam ntoo chips lossis tooj liab (hmoov) thiab lwm yam khoom.
Lus Xaus: Cov hlau nplaum yog cov feem sib nqus ntawm ob hnub thiab hu ua hlau nplaum. Cov khoom uas tuaj yeem cuam tshuam los ntawm cov hlau nplaum yog hu ua cov khoom ferromagnetic.
Sau Tsab Ntawv Ceeb Toom: Qhov kev sim me me no muaj peev xwm ua tiav los ntawm "electromagnetics" ntawm qhov kev qhia ua physics, kom txhawb nqa thiab txhim kho cov tub ntxhais kawm kev txawj ntse thiab kev ua tau zoo.
