Cov hlau nplaum tas mus li yog cov khoom siv uas tsim cov hlau nplaum los ntawm cov qauv hauv cov khoom nws tus kheej. Nyob rau hauv lub atom thiab crystal, koj muaj ob qho tib si electrons thiab atomic nuclei. Ob lub nucleus thiab cov electrons lawv tus kheej zoo li cov hlau nplaum me me, zoo li tig cov khoom me me ntawm cov hluav taws xob, lawv muaj qhov sib nqus ntawm cov khoom ntawm lawv tus kheej. Kuj tseem muaj qhov sib nqus teb uas tsim los ntawm lub orbit ntawm electron thaum nws txav mus los ntawm lub nucleus. Yog li ntawd, lub magnetic teb ntawm ib tug mus tas li hlau nplaum yog cov sum ntawm nuclear spin, electron spin, thiab lub orbit ntawm lub electron nws tus kheej.
Yuav ua li cas ua ib tug hlau nplaum:
Peb ua cov hlau nplaum los ntawm kev nthuav tawm cov hlau ferromagnetic xws li hlau thiab npib tsib xee mus rau qhov chaw sib nqus. Tsis tas li ntawd, thaum peb sov cov hlau no mus rau qhov kub thiab txias, lawv yuav raug hlau nplaum mus tas li.
Nyob rau hauv yuav ua li cas ua ib tug hlau nplaum, txoj kev yooj yim tshaj yog ua ib daim ntawv hlau nplaum.
Sau cov khoom-Ib qho yooj yim ib ntus hlau nplaum, xws li daim ntawv clips thiab cov hlau nplaum tub yees, tuaj yeem ua los ntawm cov hlau me me. Sau cov khoom no thiab ib qho nqaim ntawm cov hlau, xws li qhwv ntsej lossis cov rau tes me me, koj tuaj yeem siv lawv los xyuas cov khoom sib nqus ntawm cov ntawv hlau nplaum.
Tsis tas li ntawd, sim siv ntau qhov ntau thiab tsawg ntawm cov ntawv clips nrog rau cov ntawv tsis muaj coated thiab coated. Sau cov khoom loj ntawm ntau qhov ntau thiab tsawg thiab cov hlau kom pom cov khoom twg yuav lo rau daim ntawv clips.
Rub nws nrog daim ntawv nplaum nplaum es tsis txhob txav nws rov qab mus rau tib txoj kev. Siv tib lub zog nrawm los teeb qhov kev ua si. Txuas ntxiv mus txhuam cov ntawv clip ntawm qhov nrawm 50 zaug sai dua li siv cov hlau nplaum.
Nqa cov clip rau hauv kev sib cuag nrog cov khoom nqaim ntawm cov hlau yog qhov me me ntawm cov hlau daig rau qhov clip? Yog tias muaj, koj tau ua tiav magnetized nws. Yog tias cov hlau tsis lo rau daim ntawv clip, rub nws dua 50 zaug thiab rov sim dua.
Txhawm rau txiav txim siab lub zog ntawm cov hlau nplaum, sim khaws lwm cov ntawv clips thiab cov khoom loj dua. Xav txog lub sij hawm ntev uas daim ntawv clips tseem magnetized tom qab ib tug xov tooj ntawm rubbings.