Cov hlau nplaum puas lo rau txhuas?
Cov hlau nplaum puas lo rau txhuas?

Video: Cov hlau nplaum puas lo rau txhuas?

Video: Cov hlau nplaum puas lo rau txhuas?
Video: Saib Mis paub Poj niam (hluas nkauj) tus yam ntxwv lub siab 2024, Kaum ib hlis
Anonim

Coj (Pb) yog hlau hnyav heev, tab sis zoo li kub, coj tsis yog magnetic. Los ntawm kev txav ib qho muaj zog heev hlau nplaum dhau ib daim lead ua tau tiag ua rau cov coj txav mus. Cov yees duab hauv qab no qhia tau tias lead ua kev sib tham nrog cov hlau nplaum , lwm yam hlau, xws li txhuas, tooj dag, thiab, tooj liab muaj qhov pom kev sib cuam tshuam ntau dua.

Tsis tas li ntawd, cov hlau nplaum dab tsi lo rau?

Cov hlau uas nyiam cov hlau nplaum yog hu ua ferromagnetic hlau. Cov hlau no yog tsim los ntawm ntau lab tus tib neeg atoms uas muaj cov khoom sib nqus, txhais tau tias cov hlau nplaum lo rau lawv ruaj khov. Qee qhov piv txwv yog hlau , cobalt , npib tsib xee, hlau (vim nws yog feem ntau hlau ), manganese, gadolinium thiab lodestone.

Tsis tas li ntawd, cov hlau nplaum puas lo rau cam khwb cia hlau? Hauv lawv lub xeev ntuj, cov hlau xws li tooj dag, tooj liab, kub thiab nyiaj yuav tsis nyiam hlau nplaum . Qhov no yog vim lawv tsis muaj zog hlau pib nrog. Magnets nkaus xwb txuas lawv tus kheej kom muaj zog hlau xws li hlau thiab cobalt thiab yog vim li cas tsis yog txhua hom hlau ua tau ua cov hlau nplaum nplaum rau lawv.

Xav txog qhov no, puas yog hlau nplaum nplaum rau cov yeeb nkab txhuas?

A hlau nplaum yuav tsis yog lo rau ib lub kav dej . Yog tias qhov chaw seem yog tooj liab xim, zoo li ib lub nyiaj npib, koj cov kab kev pabcuam yog tooj liab. A hlau nplaum yuav tsis yog stick mus rau ib qho tooj liab cev . Yog hais tias qhov chaw scraped tseem yog dull grey, thiab a hlau nplaum nplaum rau saum npoo, koj cov kab kev pabcuam yog galvanized steel.

Cov hlau nplaum puas lo rau daim iav?

Lub cev… koj ua tau kua nplaum hlau nplaum mus rau iav . Koj ua tau polish ib hlau nplaum … cia hais tias koj siv cov khoom siv ferromagnetic li cov iav los yog iav -rov qab… ces magnetize nws. Yog koj xav tau stick ib tes iav mus rau ib tug hlau nto ces gluing yuav ua hauj lwm zoo.

Pom zoo: