Cov ntaub ntawv dab tsi yuav nyiam los ntawm cov hlau nplaum

Lub npe scientific ntawm hlau nplaum yog hlau nplaum, thiab hlau nplaum yog ib hom hlau nplaum.
Cov hlau nplaum yog tsim los ntawm nias ferric oxide hmoov nrog muab tub lim thiab khi. Qee cov hlau nplaum muaj zog hlau nplaum thiab muaj ntau dua Fe3O4, thaum lwm tus muaj cov hlau nplaum tsis muaj zog thiab muaj tsawg dua Fe3O4. Cov teeb meem feem ntau yog tsim los ntawm cov molecules, molecules yog tsim los ntawm atoms, thiab atoms yog tsim los ntawm nuclei thiab electrons. Nyob rau hauv ib lub atom, electrons tas li spinning ntawm lawv tus kheej thiab orbiting lub nucleus. Ob leeg ntawm no txav ntawm electrons tsim magnetism. Tab sis nyob rau hauv feem ntau cov khoom, cov electrons tsiv mus nyob rau hauv sib txawv kev taw qhia thiab yog chaotic, thiab cov magnetic cuam tshuam tshem tawm ib leeg. Yog li ntawd, feem ntau cov tshuaj tsis sib nqus nyob rau hauv ib txwm muaj mob.
Ferromagnetic tshuaj xws li hlau, cobalt, npib tsib xee, los yog ferrite yog txawv. Cov electron spins nyob rau hauv nws yuav ua tau spontaneously teem nyob rau hauv ib tug me me ntau yam los tsim ib tug spontaneous magnetization cheeb tsam, uas yog hu ua ib tug sib nqus domain. Tom qab cov khoom siv ferromagnetic yog magnetized, cov khoom sib nqus sab hauv yog teem kom zoo thiab nyob rau tib qho kev taw qhia, uas ntxiv dag zog rau cov hlau nplaum thiab tsim cov hlau nplaum. Cov txheej txheem hlau-absorbing ntawm cov hlau nplaum yog cov txheej txheem hlau nplaum ntawm cov hlau thaiv. Cov hlau nplaum hlau thaiv thiab cov polarities sib txawv ntawm cov hlau nplaum tsim kom muaj zog txaus nyiam, thiab cov hlau thaiv yog khov kho "sticked" rau cov hlau nplaum. Peb hais tias cov hlau nplaum yog hlau nplaum.