Mene ne Magnetic filin?

Mene ne Magnetic filin? Don amsa wannan tambaya, bari mu tuna da tushe na electrodynamics. Kamar yadda aka sani, a kan wani tsit m cajin q, jere a wani lantarki filin yankin ya bayyana biasing sakamako tare da wani karfi F. The mafi cajin darajar (ko da dũkiyõyinsu), da girma da karfi. Wannan tashin hankali ne - daya daga cikin filin Properties. Idan muka designate shi a matsayin E, sa'an nan muka samu:

E = F / q

Bi da bi, mobile zargin shafi Magnetic filin yanayi. Duk da haka, a cikin wannan yanayin da karfi dogara ba kawai a kan yawa da wutar lantarki, amma kuma a kan vector shugabanci na motsi (ko, mafi daidai, gudun).

Ta yaya za mu iya karatu da sanyi na Magnetic filin? Wannan matsalar da aka samu nasarar warware sanannun masana kimiyya - Ampere da Oersted. Suna sanya shi a cikin shugaba kewaye da wutar lantarki yanzu tsanani da kuma nazari effects exerted. Sai ya juya daga cewa tasiri a kan sakamakon da kwane-kwane fuskantarwa a sarari, ya nuna gaban vector directional karfin juyi. Shigar da na Magnetic filin (auna a Tesla) da aka bayyana, ta hanyar da rabo daga ce lokacin da karfi da samfurin da shugaba kewaye yankin da kuma sunã gudãna lantarki a halin yanzu. A gaskiya, shi ya bayyana filin kanta, wanda a cikin wannan yanayin ne ya cancanta. Mun Express duk gaya ta hanyar mai sauki dabara:

B = M / (S * I);

inda M - matsakaicin darajar da karfin juyi ya dogara da fuskantarwa da madauki a wani Magnetic filin. S - total yankin na madauki. I - yanzu a cikin shugaba.

Tun da Magnetic filin ne a vector yawa, shi ne kara ake bukata a sami ta fuskantarwa. A mafi gani wakilci shi ya ba talakawa kamfas allura cewa ko da yaushe na nuna arewa iyakacin duniya. Shigar da duniya ta Magnetic filin orients shi bisa ga Magnetic filin Lines. A wannan abu ya faru a lokacin da ka sanya wani kamfas kusa da wani shugaba ta hanyar abin da na yanzu gudana.

Kwatanta kewaye kamata gabatar da ra'ayi na Magnetic lokacin. Wannan vector ne numerically daidaita da samfurin na S zuwa I. Its shugabanci perpendicular zuwa notional jirgin sama na conductive madauki. Za a iya ƙaddara da aka sani da bangaren dama dunƙule mulki (ko thumb cewa shi ne guda). Shigar da na Magnetic filin a vector wakilci daidai da shugabanci na Magnetic lokacin.

Saboda haka, yana yiwuwa a samu wani dabara domin karfi aiki a kan madauki (duk yawa vector!):

M = B * m.

inda M - total vector lokacin da karfi; B - Magnetic shigar da; m - darajar da Magnetic lokacin.

Daidai da ban sha'awa Magnetic filin shigar da solenoid. Yana da wani Silinda da waya rauni tare da lantarki halin yanzu gudana. Shi ne daya daga cikin mafi used abubuwa a cikin wutan aikin injiniya. A rayuwar yau da kullum, tare da solenoids kowane mutum na fuskantar duk lokacin, ba tare da sanin shi. Saboda haka, generated halin yanzu Magnetic filin ciki Silinda ne gaba daya kama, da kuma ta vector ne directed coaxially da Silinda. Amma a waje da Silinda gidaje na Magnetic shigar da vector mãsu fakowa (sifili). Duk da haka, wannan shi ne kawai gaskiya ga cikakken nada tare da iyaka tsawon. A yi, da iyaka ne daban-daban. Da farko, da shigar da vector ne ba ya daidaita da sifili (da filin da aka rubuta a ciki da wajen Silinda), da kuma ciki sanyi kuma hasarar da homogeneity. To, don me bukatar da "manufa model"? Very sauki! Idan kasa da tsawon da Silinda diamita (yawanci shi ne), da cibiyar da solenoid shigar da vector kusan daidai da wannan halayyar manufa model. Sanin diamita da kuma tsawon na Silinda, yana yiwuwa yin lissafi da bambanci tsakanin karshe shigar da nada da kuma ta manufa (iyaka) takwaransa. A mafi yawa ana bayyana a matsayin mai yawan.