Leej Twg Tsim Ua Cov Hlau Nplaum Khov

Cov txheej txheem:

Leej Twg Tsim Ua Cov Hlau Nplaum Khov
Leej Twg Tsim Ua Cov Hlau Nplaum Khov

Video: Leej Twg Tsim Ua Cov Hlau Nplaum Khov

Video: Leej Twg Tsim Ua Cov Hlau Nplaum Khov
Video: Hmong yog leej twg 2024, Hlis ntuj nqeg
Anonim

Tus txiv neej uas tsim cov hlau nplaum sib tw khov yog John Wheatley. John tsim nws cov hlau nplaum rov qab rau xyoo 1951. Ua tsaug rau nws txoj kev tsim tawm, tib neeg txuas cov ntawv xa xov nrog cov lus rau ib tus mus rau phab ntsa ntawm tub yees thiab tsuas yog khaws cov hlau nplaum, nqa lawv los ntawm txawv teb chaws.

Leej twg tsim ua cov hlau nplaum khov
Leej twg tsim ua cov hlau nplaum khov

John Wheatley

Asmeskas John Wheatley tau suav tias yog tus tsim cov hlau nplaum uas txuas nrog hlau phab ntsa ntawm tub yees.

Thaum lub caij nplooj zeeg xyoo 1951, nws tau sau npe ua ntu patent raws tus lej US 2693370, uas nws tau piav qhia nws qhov kev tsim tawm raws li cov txheej txheem ntawm ntau cov hlau nplaum tsau rau ib lub hauv paus. Wheatley tus tsim tshiab tsim los npaj cov ntawv rau cov ntxhuav, phab ntsa, thiab lwm yam. Nws tsis tau txog ntau xyoo tom qab tias Wheatley cov hlau nplaum pib txuas rau hauv cov tub yees.

Niaj hnub ntau yam ntawm cov hlau nplaum

Cov tub yees siv yees txias niaj hnub no yog cov duab yas nrog ib los yog ntau dua neodymium hlau nplaum nplaum rau sab nraub qaum. Tsis zoo li cov hlau nplaum sib xyaw uas tau muaj nyob rau hauv hnub ntawm John Wheatley, neodymium hlau nplaum muaj lub zog loj heev ua kom pom tseeb thiab tsis txhob demagnetize ntev. Lawv tau ua los ntawm ib qho txuas ntawm hlau, boron thiab lub ntiaj teb tsis tshua muaj hlau neodymium.

Keeb xeeb, cov hlau nplaum khov tau siv los txuas cov npe to-do thiab to-do npe rau lawv. Tam sim no lawv feem ntau siv yooj yim los ua cov khoom dai zoo nkauj. Ntawm cov tub yees koj tuaj yeem nrhiav cov hlau nplaum uas coj los coj los ntawm cov teb chaws sib txawv, daim phiaj hlau, hlau nplaum ntsuas kub, thiab lwm yam.

Ntxiv nrog rau neodymium hlau nplaum, cov nplaum nplaum sib pauv tau kuj tuaj yeem pom ntawm cov tub yees. Lawv muaj cov yas, nyob rau hauv qab ntawm kev uas txheej ferromagnetic (feem ntau yog hlau oxide) thov. Lub zog ntawm cov hlau nplaum zoo li no txaus los tuav lawv tus kheej qhov hnyav, tab sis lawv yuav tsis muaj peev xwm muab ob peb nplooj ntawv tso rau hauv tub yees nrog lawv cov kev pab.

Hauv xyoo 1960, Tebchaws Asmeskas pib tsim tag nrho cov khoom siv hlau nplaum me me, tsim los ntawm tus ntawv ntawm tus niam ntawv. Nrog lawv cov kev pab, nws yog ib qhov ua tau tawm hauv cov lus nyob hauv tub yees thiab qhia cov menyuam yaus kom nyeem thiab sau ntawv.

Cov suav zog ntawm cov hlau nplaum

Kev sib sau cov hlau nplaum khov yog qhov kev nyiam ua rau ntau tus. Qee tus neeg khaws cov hlau nplaum los ntawm kev mus ncig, lwm tus sau cov hlau nplaum uas hais txog lub ncauj lus. Txog tam sim no, khaws cov hlau nplaum tsis muaj npe feem ntau lees txais (xws li, piv txwv li, khaws cov npib hu ua numismatics, thiab khaws cov nyiaj cim yog hu ua philately). Lavxias teb neeg sau cov hlau nplaum pom tias siv lub sijhawm "memomagnetics" rau qhov no.

Cov ntawv sau loj tshaj plaws ntawm cov hlau nplaum khov yog qhov chaw nyob hauv Asmeskas Louise Greenfarb - nws suav nrog ntau ntau kaum tawm ntawm cov hlau nplaum, ua tsaug uas Louise tau muaj nyob hauv phau Guinness Phau Ntawv Sau Tseg.

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