Yuav ua li cas yog magnetic teb reverses

Sib nqus teb, tsim los ntawm cov hlau nplaum lossis cov hluav taws xob tam sim no tuaj yeem cuam tshuam rau tus cwj pwm ntawm cov khoom siv, xws li electrons, ions, thiab txawm tias atoms, thiab ua lub luag haujlwm tseem ceeb hauv kev ua haujlwm ntawm ntau yam khoom siv thiab tshuab, los ntawm MRI cov cav tov thiab cov khoom accelerators rau cov tshuab hluav taws xob. thiab motors. Txawm li cas los xij, cov hlau nplaum tsis zoo li qub thiab tuaj yeem hloov pauv raws sijhawm, qeeb lossis nrawm, vim muaj ntau yam txheej txheem ntawm lub cev thiab qhov tshwm sim. Ib qho kev hloov pauv uas txaus ntshai tshaj plaws thiab muaj peev xwm cuam tshuam yog kev thim rov qab ntawm cov hlau nplaum polarity, uas yog hais txog kev hloov pauv ntawm cov kev taw qhia ntawm cov kab sib nqus. Hauv tsab xov xwm no, kuv yuav piav qhia yuav ua li cas yog tias cov hlau nplaum thim rov qab thiab nws yuav cuam tshuam li cas rau koj cov khoom thiab kev ua haujlwm.

Ua ntej ntawm tag nrho cov, cia peb qhia meej tias peb txhais li cas los ntawm magnetic teb reversal. Lub ntiaj teb, piv txwv li, muaj ib qho chaw sib nqus uas tshwm sim los ntawm nws lub hauv paus thiab nthuav tawm sab nraud, tsim ib daim ntaub thaiv npog uas tiv thaiv peb ntawm hnub ci cua thiab cosmic rays. Qhov chaw sib nqus no tsis raug kho thiab tau hloov pauv ntau zaus hauv ob peb lab xyoo dhau los, raws li qhia los ntawm cov ntaub ntawv geological. Thaum lub sij hawm sib nqus reversal, sab qaum teb thiab sab qab teb ncej ntawm lub ntiaj teb magnetic teb hloov chaw, txawm hais tias qhov tseeb thaj chaw sab qaum teb thiab sab qab teb ncej nyob ib yam. Cov txheej txheem tuaj yeem siv ntau txhiab xyoo lossis ob peb centuries, thiab thaum lub sijhawm ntawd, cov hlau nplaum yuav tsis muaj zog, ua kom nyuaj, thiab txawm tias muaj ntau tus ncej. Kev thim rov qab tag nrho cov hlau nplaum kawg tau tshwm sim li ntawm 780,000 xyoo dhau los, tab sis tam sim no qhov kev sib nqus ntawm cov ncej hlau nplaum qhia tias qhov kev thim rov qab ib nrab tuaj yeem ua tiav.

Yuav ua li cas yog hais tias magnetic teb reverses, nyob rau hauv lub ntiaj teb no los yog nyob rau hauv koj cov khoom? Cov lus teb luv luv yog tias nws nyob ntawm hom, qhov loj me, thiab kev taw qhia ntawm cov hlau nplaum, nrog rau ib puag ncig thiab cov ntaub ntawv koom nrog. Feem ntau, txawm li cas los xij, kev sib nqus rov qab tuaj yeem ua rau cov teebmeem hauv qab no:

- Sib nqus cuam tshuam: Kev hloov pauv magnetic tuaj yeem ua rau hluav taws xob tam sim no hauv cov khoom siv hluav taws xob, xws li xov hlau, circuits, thiab sensors. Cov dej tam sim no, dhau los, tuaj yeem ua rau muaj kev cuam tshuam, suab nrov, lossis kev puas tsuaj rau cov khoom siv hluav taws xob, tshwj xeeb tshaj yog cov uas tso siab rau cov khoom sib nqus, xws li cov compasses, gyroscopes, thiab cov khoom sib nqus. Yog li ntawd, yog tias koj cov khoom siv los yog ntes cov hlau nplaum, xws li magnetic sensors, actuators, los yog keyboards, koj yuav tsum tau rov ntsuam xyuas lawv cov qauv tsim thiab thaiv cov txheej txheem kom paub meej tias kev ua haujlwm zoo thiab kev tiv thaiv thaum lub sijhawm sib nqus rov qab.

- Geomagnetic cua daj cua dub: Ib qho chaw sib nqus rov qab kuj tseem tuaj yeem ua rau muaj kev cuam tshuam ntawm ionosphere, txheej txheej sab saud ntawm cov cua uas qhia txog xov tooj cua tsis muaj zog thiab cuam tshuam rau kev sib txuas lus thoob ntiaj teb. Qhov kev cuam tshuam no tuaj yeem ua rau muaj cua daj cua dub geomagnetic, tus cwj pwm los ntawm auroras, xov tooj cua blackouts, thiab fais fab tuag. Txawm hais tias cov teebmeem no feem ntau cuam tshuam rau cov chaw haujlwm thiab cov chaw siv hluav taws xob, lawv tuaj yeem cuam tshuam ncaj qha rau ntau lwm cov lag luam uas vam khom rau satellite navigation, huab cua huab cua, lossis kev pabcuam xwm txheej ceev. Yog li ntawd, yog tias koj cov khoom lossis cov kev pabcuam nyob ntawm cov tshuab no, koj yuav tsum tau npaj kom muaj kev cuam tshuam lossis cuam tshuam thaum lub sijhawm sib nqus rov qab.

- Cov teebmeem lom neeg: Kev hloov pauv magnetic kuj tuaj yeem cuam tshuam rau cov kab mob uas muaj sia nyob, tshwj xeeb yog cov uas taug kev lossis taw qhia lawv tus kheej siv cov khoom sib nqus. Piv txwv li, noog, ntses, thiab muv tau pom tias muaj cov khoom sib nqus thiab cov kab sib txuas uas pab lawv taug kev deb lossis nrhiav cov khoom noj. Kev thim rov qab sib nqus tuaj yeem ua rau tsis meej pem lossis tsis txaus ntseeg cov tsiaj no, ua rau txo qis kev ciaj sia, hloov pauv hloov pauv, lossis txawm tias ploj mus. Yog li ntawd, yog tias koj cov khoom lossis kev ua ub no cuam tshuam nrog cov tsiaj no, koj yuav tsum tau soj ntsuam lawv cov kev cuam tshuam thiab siv cov kev ntsuas kom tsim nyog.