Dab tsi yog ib qho chaw ruaj khov?

Ib qho chaw ruaj khov yog ib qho khoom siv hauv txhua qhov chaw ntawm magnetic, los yog feem ntau, ntawm nws cov khoom sib nqus yuav raug yaum kom sib haum nyob rau tib qho kev coj los ntawm kev siv xaj hlau nplua nuj. Thiab tseem ceeb, thaum mus ua ke, lawv nyob zoo raws li, thaum tawm sab nraud tawm. Li ntawd, nws yuav mus tas li magnetized. Hlau yog qhov piv txwv zoo tshaj plaws.

Cheebtsam tuaj yeem yog cov leeg nta hlau, molecules, lossis cov nplaum ua pob kws. Vim li cas? Tsis tshua muaj txoj hauv kev. Nws yog ib qho ntawm ob peb lub phenomena qhov twg quantum mechanical teebmeem txuas dua li ib lub ntim rau lub cev kom loj heev rau lub sijhawm.

Muaj ib qho piv txwv qaug zog nrog qhov txawv ntawm cov kua thiab cov khoom crystalline. Tsis muaj kev cuam tshuam kev tsis tuaj yeem, cov kua tsis muaj qhov txawv ntawm nws qhov kev coj ntawm ib qho kev coj thiab lwm yam, qhov twg yog qhov siv lead ua.