Sharciga Faraday
Pengantar
Sharciga Faraday ee ku saabsan kicinta korantada waa mabda' aasaasi ah oo ku jira fiisigiska kaas oo qeexaya sida garoonka birlabta ee isbeddelaya uu u soo saari karo koronto koronto oo ku jirta koontaroole. Sharcigan oo uu helay Michael Faraday sanadkii 1831, waa tiir muhiim ah oo ka mid ah electromagnetism-ka wuxuuna leeyahay codsiyo badan oo ku saabsan tignoolajiyada casriga ah, sida matoorada korontada iyo transformers-ka. Maqaalkani wuxuu faahfaahin doonaa aragtida ka dambeysa sharciga Faraday, tijaabooyinka taageeraya, iyo codsiyadiisa kala duwan ee wax ku oolka ah.
Aragtida Aasaasiga ah
Qeexidda Sharciga Faraday
Sharciga Faraday wuxuu dhigayaa in xoogga elektromotive-ka (EMF) ee lagu kiciyo wareegga xiran uu la mid yahay heerka isbeddelka qulqulka birlabta ee wareegga. Xisaab ahaan, sharcigan waxaa lagu sheegay sidan:
\[ \mathcal{E} = -\frac{d\Phi_B}{dt} \]
Halkee:
– \( \mathcal{E} \) waa EMF-ga la soo saaray (volt ahaan),
– \( \Phi_B \) waa qulqulka birlabta (ee shabakadda),
– \( \frac{d\Phi_B}{dt} \) waa heerka isbeddelka qulqulka birlabta.
Calaamadda taban ee isle'egtan waxay ka timid Sharciga Lenz, kaas oo sheegaya in jihada EMF-ga la kiciyay ay had iyo jeer tahay mid ka soo horjeeda isbeddelka qulqulka birlabta ee sababa.
Dareeraha Birlabta ah
Dareeraha birlabta \( \Phi_B \) waa cabbir lagu cabbiro xaddiga goobta birlabta ee dhex marta meel la bixiyay. Dareeraha birlabta waxaa lagu qeexaa sida:
\[ \Phi_B = B \cdot A \cdot \cos(\theta) \]
Halkee:
– \( B \) waa goobta birlabta (ee tesla),
– \( A \) waa aagga uu maro goobta birlabta (mitir laba jibbaaran),
– \( \theta \) waa xagasha u dhaxaysa goobta birlabta iyo xariiqda ku toosan aagga.
Sharciga Lenz
Sharciga Lenz wuxuu bixiyaa jihada EMF-ga la kiciyey iyo qulqulka ka dhasha. Sida ku xusan Sharciga Lenz, hirarka la kiciyey ee ku jira wareegga ayaa soo saari doona goob birlab ah oo ka soo horjeeda isbeddelka qulqulka birlab ee sababay. Xisaab ahaan, tan waxaa lagu muujiyaa calaamadda taban ee ku jirta isle'egta Sharciga Faraday.
Tijaabadii Faraday
Soo-helidda Koronto-magnetka
Michael Faraday wuxuu sameeyay tijaabooyin taxane ah sanadkii 1831 si uu u barto xiriirka ka dhexeeya goobaha birlabta iyo hirarka korontada. Mid ka mid ah tijaabooyinka muhiimka ah ee Faraday wuxuu ku lug lahaa gariirad silig ah oo ku xiran galvanometer (qalab lagu cabbiro qulqulka korontada) iyo birlabta baarka. Faraday wuxuu ogaaday in marka birlabta baarka loo raro dhanka ama ka fog gariiradda, koronto koronto ayaa ku soo dhacda gariiradda, taas oo lagu ogaaday galvanometer-ka.
Kala Duwanaanta Tijaabada
Faraday sidoo kale wuxuu sameeyay nooc ka mid ah tijaabadan isagoo adeegsanaya laba duub oo silig ah oo ku wareegsan xudunta birta. Markii koronto koronto laga dhex mariyay gariiradda koowaad (coil-kii ugu horreeyay), goobta birlabta ee ka dhalatay waxay kicisay koronto ku jirta gariiradda labaad (coil-kii labaad). Faraday wuxuu ku soo gabagabeeyay in isbeddelka goobta birlabta ee ku wareegsan gariiradda uu sababay qulqulka korontada ee la kiciyay.
Adeegsiga Sharciga Faraday
Matoor Koronto
Matoor koronto waa mid ka mid ah codsiyada aasaasiga ah ee Sharciga Faraday. Matooradu waxay tamarta farsamada u beddelaan tamar koronto iyada oo loo marayo mabda'a kicinta elektromagnetic-ka. Marka gariirad silig ah ay ku wareegto goob birlab ah, qulqulka magnetic-ga ee isbeddelaya ee ku wareegsan gariiradda ayaa soo saara emf, kaas oo kiciya koronto.
1. Matoorka AC (Kowdanta Beddelaysa)
– Mabda'a Shaqada: Matoorka AC wuxuu adeegsadaa goob birlab ah oo ay soo saarto birlab joogto ah ama elektaroonik. Marka gariiraddu ku wareegto goobta birlabka, qulqulka birlabka ee ku wareegsan gariiradda ayaa isbeddela, isagoo soo saaraya koronto beddelan.
– Adeegsiga: Matoorada AC-ga waxaa loo isticmaalaa warshadaha korontada ee waaweyn, matoorada dabaysha, iyo matoorada la qaadi karo.
2. Matoorka DC (Heerka Tooska ah)
– Mabda'a Shaqada: Matoorka DC wuxuu adeegsadaa qalab koronto si uu u beddelo koronto beddelan oo ku jirta gariiradda una beddelo koronto toos ah. Qalab koronto waa qalab farsamo oo hubiya socodka hadda hal jiho.
– Codsiyada: Matoorada DC-ga waxaa loo isticmaalaa codsiyada sida dallacaadda baytariga, nidaamyada korontada degdegga ah, iyo codsiyada warshadaha.
transformer
Transformer-ku waa qalab beddela danabka nidaamka qaybinta korontada, iyadoo lagu salaynayo mabda'a kicinta elektromagnetic-ka. Transformer-ku wuxuu ka kooban yahay laba gariirad, oo ah mid aasaasi ah iyo mid labaad, oo ku wareegsan xudunta birta.
– Mabda'a Shaqada: Korontada ku socota gariiradda koowaad waxay soo saartaa qulqul birlab ah oo kicisa EMF gariiradda labaad. Marka la kala beddelo tirada wareegyada gariiradda koowaad iyo labaad, danabku waa la kordhin karaa ama la dhimi karaa marka loo baahdo.
– Codsiyada: Transformers-ka waxaa loo isticmaalaa nidaamyada qaybinta korontada si loo kordhiyo ama loo yareeyo danabka korontada, taasoo suurtogalinaysa gudbinta hufan ee korontada laga bilaabo warshadaha korontada ilaa macaamiisha.
Dalacsiinta Wireless-ka
Ku dallacaadda bilaa-waayirka ah waa tiknoolajiyad adeegsata mabda'a soo-saarista elektromagnetic-ka si loogu wareejiyo tamarta iyada oo aan lahayn fiilooyin.
– Mabda'a Shaqada: Ku dallacaadda bilaa-waayirka ah waxay isticmaashaa goobta birlabta ee uu soo saaro gariiradda dallacaadda si ay u kiciso EMF gariiradda la helayo ee ku xiran qalabka la dallacayo. Goobta birlabta ee isbeddelaysa waxay soo saartaa koronto ku jirta gariiradda la helayo, taas oo loo isticmaalo in lagu dallaco baytariga qalabka.
– Codsiyada: Ku dallacaadda wireless-ka waxaa loo isticmaalaa aaladaha elektaroonigga ah sida taleefannada casriga ah, saacadaha casriga ah, iyo aaladaha caafimaadka ee la qaadi karo.
Xaaladaha la xiriira
1. Saamaynta hadda jirta ee Eddy
– Mabda'a Shaqada: Mowjadaha Eddy waa mowjado ay kiciyaan koronto-dhaliye ka yimaada goob birlabeed oo isbeddelaysa. Mowjadaha eddy-ga waxay soo saaraan goob birlabeed oo ka soo horjeeda isbeddelka mowjadaha birlabeed ee sababay.
– Codsiyada: Eddy current waxaa loo isticmaalaa biriiga elektaroonigga ah, ogaanshaha birta, iyo tijaabinta aan burburin.
2. Magnetoresistance
– Mabda'a Shaqada: Magnetoresistance waa isbeddelka iska caabbinta korontada ee walax ay keento goob birlabeed oo dibadda ah. Dhacdadan waxaa loo isticmaalaa kaydinta xogta iyo tiknoolajiyada dareemayaasha birlabka.
– Codsiyada: Magnetoresistance waxaa loo isticmaalaa darawallada hard diskka, dareemayaasha xawaaraha, iyo nidaamyada dareenka booska.
3. Saamaynta Hoolka
– Mabda'a Shaqada: Saamaynta Hall waa dhacdo ay goob birlabeed oo ku toosan koronto ku jirta gudbiye ay soo saarto farqi danab oo ku baahsan gudbiye. Danabkan waxaa loo yaqaan danabka Hall.
– Codsiyada: Saamaynta Hall-ka waxaa loo isticmaalaa dareemayaasha Hall si loo cabbiro goobaha birlabta, xawaaraha, iyo booska.
Codsiyada Tiknoolajiyada Sare
Tiknoolajiyadda Caafimaadka: MRI (Sawirka Magnetic Resonance Imaging)
MRI waa farsamo sawir-qaadis caafimaad oo adeegsata goobaha birlabta iyo hirarka raadiyaha si loo soo saaro sawirro faahfaahsan oo ku saabsan qaab-dhismeedka gudaha ee jirka aadanaha.
– Sida ay u Shaqeyso: MRI waxay isticmaashaa goob birlabeed oo xooggan si ay u jiheyso protons-ka gudaha jirka. Marka goobta birlabeed la shido oo la damiyo, protons-kani waxay soo saaraan calaamado ay kombiyuutarku qabto oo u farsameeyo sawirro.
– Codsiyada: MRI waxaa loo isticmaalaa in lagu ogaado xaalado caafimaad oo kala duwan, oo ay ku jiraan burooyinka, cudurrada wadnaha, iyo xanuunnada neerfaha. Faa'iidada MRI waa awooddeeda ay ku soo saari karto sawirro aad u faahfaahsan iyada oo aan la isticmaalin shucaaca ionizing.
Matoor koronto
Matoorada korontada ku shaqeeya waa mid ka mid ah codsiyada caadiga ah ee Sharciga Faraday kaas oo ku shaqeeya mabda'a kicinta elektaroonigga ah.
– Mabda'a Shaqada: Matoorada korontada waxay ku shaqeeyaan iyagoo ku socda qulqulka korantada iyagoo dhex maraya gariirad ku jirta goob birlab ah, taasoo soo saarta xoog sababa in gariiraddu wareegto.
– Adeegsiga: Matoorada korontada waxaa loo isticmaalaa qalab kala duwan, laga bilaabo qalabka guryaha ilaa mashiinnada warshadaha waaweyn.
Gabagabo
Sharciga Faraday ee ku saabsan kicinta korantada waa mabda' aasaasi ah oo ku saabsan fiisigiska kaas oo sharraxaya sida garoonka birlabta ee isbeddelaya uu u soo saari karo koronto koronto oo ku jirta koontaroole. Sharcigan oo uu helay Michael Faraday sanadkii 1831, ayaa noqday saldhigga tignoolajiyado badan oo casri ah, oo ay ku jiraan matoorada korontada, transformers-ka, iyo tignoolajiyada wireless-ka. Tijaabooyinka Faraday waxay muujiyeen xiriirka ka dhexeeya goobaha birlabta iyo qulqulka korontada, kaas oo markii dambe lagu tilmaamay xisaab ahaan sharciga kicinta korantada.
Adeegsiga Sharciga Faraday waa mid ballaaran, oo ballaaran sida soo saarista korontada, qaybinta, dallacaadda wireless-ka, tignoolajiyada caafimaadka, iyo matoorada korontada. Ifafaalaha la xiriira sida saameynta hadda jirta ee eddy, magnetoresistance, iyo saameynta Hall waxay muujinayaan saameynta baahsan ee soo-saarista elektromagnetic-ka ee sayniska iyo tignoolajiyada. Marka tignoolajiyada iyo cilmi-baaristu ay horumaraan, codsiyada Sharciga Faraday waxay sii wadi doonaan inay sii ballaaraan, taasoo albaabka u furaysa hal-abuurro casri ah oo hufan mustaqbalka.
