YMagnetic Flux vs Sib Nqus Flux Density
Magnetic flux thiab magnetic flux ntom yog ob qhov tshwm sim tau ntsib hauv electromagnetic field theory. Cov phenomena no tseem ceeb heev nyob rau hauv cov teb xws li physics, electronics engineering, telecommunication engineering, hluav taws xob engineering thiab particle physics. Kev nkag siab zoo hauv cov hlau nplaum yog qhov tseem ceeb rau kev ua haujlwm ntawm cov lus hais saum toj no. Nyob rau hauv tsab xov xwm no, peb yuav tham txog dab tsi magnetic teb yog, dab tsi magnetic flux thiab magnetic flux ceev yog, lawv qhov tseem ceeb, xam thiab tseem ceeb yam ntawm magnetic flux thiab magnetic flux ntom, lawv zoo sib xws thiab thaum kawg lawv txawv.
Magnetic Flux
Magnets tau tshawb pom los ntawm Suav thiab Greeks nyob rau lub sijhawm 800 BC. mus txog 600 B. C. Xyoo 1820, Hand Christian Oersted, tus kws kho mob Danish, nrhiav pom tias tam sim no nqa xaim ua rau lub koob koob mus rau sab xis ntawm cov hlau. Qhov no yog hu ua induction magnetic teb. Ib qho chaw sib nqus yog ib txwm tshwm sim los ntawm kev txav mus los (piv txwv li lub sijhawm sib txawv hluav taws xob). Cov hlau nplaum tas mus li yog qhov tshwm sim ntawm electron spin ntawm atoms sib txuas ua ke los tsim cov net magnetic teb. Yuav kom nkag siab txog lub tswvyim ntawm magnetic flux ib tug yuav tsum xub to taub lub tswvyim ntawm magnetic teb kab. Cov kab hlau nplaum sib nqus lossis cov kab sib nqus ntawm cov rog yog ib txheej ntawm cov kab uas xav tau los ntawm N (sab qaum teb) ncej ntawm cov hlau nplaum mus rau S (sab qab teb) ncej ntawm cov hlau nplaum. Hauv kev txhais, cov kab no yeej tsis hla ib leeg, tshwj tsis yog qhov sib nqus sib nqus yog xoom. Nws yuav tsum raug sau tseg tias cov kab sib nqus ntawm lub zog yog lub tswv yim. lawv tsis muaj nyob hauv lub neej tiag. Nws yog ib qho qauv, uas yog yooj yim los sib piv cov magnetic teb qualitatively. Qhov sib nqus flux nyob rau saum npoo yog hais tias yog proportional rau tus naj npawb ntawm cov kab sib nqus ntawm cov quab yuam perpendicular mus rau qhov chaw muab. Txoj cai Gauss, txoj cai Ampere thiab Biot-Savart txoj cai yog peb txoj cai tseem ceeb tshaj plaws thaum xam cov sib nqus flux saum npoo. Nws tuaj yeem ua pov thawj siv Gauss txoj cai lij choj uas cov hlau nplaum sib nqus ntawm qhov chaw kaw yog ib txwm xoom. Qhov no tseem ceeb heev vim qhov no qhia tau hais tias cov hlau nplaum ib txwm tshwm sim hauv khub. Magnetic monopoles nrhiav tsis pom.
Magnetic Flux Density
Sib nqus flux ceev, raws li lub npe qhia yog qhov ntom ntom ntawm cov hlau nplaum sib nqus ntawm ib qho chaw. Qhov no yog proportional rau tus naj npawb ntawm magnetic force kab ib txwm mus rau qhov chaw muab los ntawm ib chav tsev ntawm qhov chaw. Txij li thaum lub magnetic flux tshaj ib tug muab nto yog sib npaug zos rau saum npoo ntawm lub magnetic teb siv nws yuav pom tau hais tias lub magnetic teb siv thiab sib nqus flux ceev yog tib yam parameter qhia nyob rau hauv ntau hom.
Qhov txawv ntawm Magnetic Flux thiab Magnetic Flux Density yog dab tsi?
– Sib nqus flux yog ntsuas hauv webers, tab sis magnetic flux ntom yog ntsuas hauv webers ib square meter.
– Sib nqus flux ntom yog qhov sib nqus flux ib cheeb tsam.
– Sib nqus flux hla qhov chaw kaw yog xoom, thaum sib nqus flux ntom ntawm qhov chaw kaw yog sib txawv ntawm taw tes rau taw tes.
