Video: Cov ntaub ntawv twg tuaj yeem ua tau magnetized?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Cov ntaub ntawv uas tuaj yeem ua kom muaj hlau nplaum, uas kuj yog cov uas muaj zog heev rau cov hlau nplaum, hu ua ferromagnetic. Cov no hlau suav nrog hlau , npib tsib xee , cobalt , thiab ib co alloys ntawm tsawg ntiaj teb hlau , thiab tej yam ntuj tso minerals xws li lodestone.
Ib yam li ntawd, koj tuaj yeem nug, cov hlau twg tuaj yeem ua tau hlau nplaum?
Cov hlau feem ntau siv rau cov hlau nplaum ruaj khov yog hlau , npib tsib xee , cobalt thiab ib co alloys ntawm tsawg ntiaj teb hlau . Muaj ob hom hlau nplaum ruaj khov: cov los ntawm "nyuaj" hlau nplaum cov ntaub ntawv thiab cov los ntawm "mos" magnetic cov ntaub ntawv . "Hard" sib nqus hlau zoo li nyob ruaj khov nyob rau lub sijhawm ntev.
Ib yam li ntawd, vim li cas qee cov khoom siv hlau nplaum? Ferromagnetism yog ib qho tshwm sim uas tshwm sim hauv qee cov hlau , tshwj xeeb tshaj yog hlau, cobalt thiab nickel, uas ua rau cov hlau ua magnetic . Cov atoms hauv cov no hlau muaj ib tug unpaired electron, thiab thaum cov hlau raug rau ib tug txaus muaj zog Sib nqus teb, cov electrons 'spins kab sib npaug mus rau ib leeg.
Tom qab ntawd, lo lus nug yog, cov ntaub ntawv tsis sib nqus puas tuaj yeem sib nqus tau?
Tsis yog - Cov khoom siv hlau nplaum . Cov cov ntaub ntawv uas tsis nyiam los ntawm a hlau nplaum hu ua tsis yog - Cov khoom siv hlau nplaum . Tag nrho cov tshuaj Lwm yam tsis yog hlau, npib tsib xee, thiab cobalt yog tsis yog - cov khoom sib nqus xws li yas, roj hmab, dej, thiab lwm yam cov ntaub ntawv nonmagnetic . Tsis yog - cov khoom sib nqus ua tsis tau magnetized.
Dab tsi yog cov khoom siv hlau nplaum tshaj plaws?
Hlau cobalt
Pom zoo:
Txoj kev faib cov ntaub ntawv twg muab cov ntaub ntawv sib npaug ntawm cov ntaub ntawv lossis cov kev tshuaj xyuas hauv txhua chav kawm cov ntaub ntawv?
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