Simba reMagineti
Pengantar
Simba remagineti chimwe chezviratidzo zvekubatana kwemagineti kunoitika kana zvidimbu zvine chaji zvichifamba mumunda wemagineti. Simba iri ndiro hwaro hwezviitiko zvakawanda zvechisikigo uye zvetekinoroji, kubva kumakompasi akareruka kusvika kumamota emagetsi akaomarara. Chinyorwa chino chichaongorora dzidziso huru iri shure kwesimba remagineti, mitemo inoritonga, uye mashandisirwo aro akasiyana-siyana.
Dzidziso Yekutanga
Mutemo waLorentz
Simba remagineti riri pachikamu chakachajwa chinofamba mumunda wemagineti rinotsanangurwa neMutemo waLorentz. Mutemo uyu unoti simba \( \mathbf{F} \) rinoshanda pachikamu chakachajwa \( q \) nekumhanya \( \mathbf{v} \) mumunda wemagineti \( \mathbf{B} \) nderinotevera:
\[ \mathbf{F} = q (\mathbf{v} \nguva \mathbf{B}) \]
Di mana:
– \( \mathbf{F} \) isimba remagineti,
– \( q \) ndiyo muripo wezvikamu,
– \( \mathbf{v} \) ndiyo kumhanya kwezvikamu,
– \( \mathbf{B} \) ndiyo simba remagineti,
– \( \times \) ibasa rekubatanidza chigadzirwa pakati pemavector maviri.
Simba iri remagineti rinogara rakatarisa divi rekufamba kwezvikamu uye divi resimba remagineti, zvichikonzera nzira yakakombama yezvikamu zvinofamba mumunda wemagineti.
Simba reMagineti paWaya Inotakura Iye Zvino
Pamusoro pezvinhu zvakachajwa, masimba emagineti anoshandawo pawaya dzinotakura magetsi mumunda wemagineti. Kune waya pfupi \( d\mathbf{l} \) inotakura magetsi \( I \) mumunda wemagineti \( \mathbf{B} \), simba remagineti \( d\mathbf{F} \) rinogona kuratidzwa seizvi:
\[ d\mathbf{F} = Ini (d\mathbf{l} \nguva \mathbf{B}) \]
Kune waya ine urefu hwakatarwa, simba rose rinogona kuverengwa nekubatanidza equation iyi pamwe chete nehurefu hwewaya.
Mutemo waAmpère neSimba reMagineti
Mutemo waAmpère unoitawo basa rakakosha pakunzwisisa masimba emagineti, kunyanya mumamiriro ezvinhu emagineti anokonzerwa nemagetsi. Sezvambotaurwa, mutemo waAmpère unoti simba remagineti rakakomberedza simba remagetsi rinogona kuverengwa nekubatanidza simba remagetsi munzira yakavharwa. Mutemo uyu unobatsira pakuverenga kugoverwa kwemagineti, izvo zvinozosarudza simba remagineti rinoshanda pawaya inochaja kana inotakura magetsi.
Mashandisirwo eSimba reMagineti
1. Mota yeMagetsi
Mota dzemagetsi ndeimwe yenzira dzinonyanya kushandiswa pakushandisa simba remagineti. Mota dzemagetsi dzinoshanda nepfungwa yekuti magetsi ari mumunda wemagineti anosangana nesimba rinoburitsa kufamba. Mumota yeDC (direct current), coil inotakura magetsi inoiswa mumunda wemagineti unogadzirwa nemagneti inogara iripo kana electromagnet. Kana magetsi achipfuura nemu coil, simba remagineti rinobuda rinoita kuti coil itenderere, zvichiburitsa kufamba kwemuchina. Nheyo iyi inoshandiswa mumidziyo yakasiyana-siyana, kubva pamatoyi akareruka kusvika kumichina yeindasitiri.
2. Jenareta
Majenareta anoshanda zvakasiyana nemamota. Mujenareta, kufamba kwemuchina kunoshandiswa kufambisa coil mumunda wemagineti, zvichigadzira magetsi. Sezvo coil ichifamba nemumunda wemagineti, kushanduka kwemagineti kunokonzera magetsi mucoil zvichienderana nemutemo waFaraday we electromagnetic induction. Majenareta ndiwo manyuko makuru ekugadzira magetsi mumabasa akasiyana-siyana, kubva kumafekitori makuru kusvika kumajenareta anotakurika.
3. Transformator
Transformer mudziyo unoshandiswa kushandura voltage mumagetsi. Matransformer anoshanda pamisimboti ye electromagnetic induction uye magnetic force. Mu transformer, magetsi ari mu primary coil anogadzira simba remagineti rinoita kuti magetsi apinde mu secondary coil. Nekuchinja huwandu hwema turns mu primary ne secondary coils, voltage inogona kuwedzerwa kana kudzikiswa sezvinodiwa.
4. Magneti eElectromagnetic uye MRI
Magineti yemagetsi mudziyo unoshandisa magetsi emagetsi kugadzira simba remagineti. Magineti aya anoshandiswa mumhando dzakasiyana-siyana, kubva pamidziyo yekusimudza magineti yeindasitiri kusvika kumidziyo yekurapa yakaita seMRI (Magnetic Resonance Imaging). MuMRI, simba remagineti rakasimba rinoshandiswa kugadzira mifananidzo yakadzama yezvimiro zvemukati memuviri wemunhu. Simba remagineti rinogadzirwa nemunda uyu rinobvumira kuona nekuongorora tissue zvine resolution yepamusoro.
5. Kambasi uye Kufamba
Kambasi inzira iri nyore asi inokosha yekushandisa simba remagineti. Tsono yekambasi, inova magineti madiki, inotenderera kuti ienderane nesimba remagineti rePasi. Izvi zvinoita kuti kufamba kwakarurama panyika nepagungwa kuenderane. Matekinoroji emazuva ano akadai seGPS navigation systems achiri kuvimba nepfungwa iyi senzira yekugadzirisa nekuvandudza kururama kwekufamba.
Zviitiko zveMuviri Zvakafanana
1. Mhedzisiro yeHall
Mugumisiro weHall chiitiko apo simba remagineti rakatenderedza magetsi ari muconductor rinoburitsa musiyano wemagetsi (voltage yeHall) pamusoro peconductor. Mugumisiro uyu unoshandiswa mumasensa eHall anoyera simba remagineti uye mumidziyo yakaita semaswichi asingabatanidzi.
2. Lorentz Force neCyclotron
Muzvishandiso zvinomhanyisa zvinhu zvakaita se cyclotrons, simba reLorentz rinoshandiswa kukurumidzisa zvinhu zvinochajwa munzira dzakatenderera. Simba remagineti rakasimba rinoita kuti zvinhu zvinochajwa zvifambe zvakatenderera, zvichivabvumira kusvika pamasimba makuru vasati vashandiswa mukuyedza kwefizikisi yezvikamu.
3. Kudzivirira Magneto
Kuramba kushandisa magnetoresisstance ndiko kuchinja kwesimba remagetsi rinoita kuti chinhu chisashande zvakanaka (conductor) kana kuti semiconductor material chinokonzerwa nesimba remagetsi rekunze. Izvi zvinoshandiswa mumichina yekuchengetedza data yakaita sedhisiki redhisiki nemasensa emagineti.
Mhedziso
Simba remagineti ipfungwa huru mufizikisi inotsanangura kudyidzana kuripo pakati pesimba remagineti nezvikamu zvakachajwa kana magetsi. Mutemo waLorentz unopa hwaro hwedzidziso hwekunzwisisa simba remagineti pazvikamu zvakachajwa, nepo mutemo waAmpère uchibatsira kunzwisisa kugoverwa kwemasimba emagineti anogadzirwa nemagetsi. Simba remagineti rine mashandisirwo akasiyana-siyana, kubva kumota dzemagetsi nemajenareta kusvika kumatekinoroji ekurapa akadai seMRIs nemidziyo yekuchengetedza data. Nekunzwisisa kwakadzama kwesimba remagineti nemitemo inoritonga, tinogona kuramba tichigadzira matekinoroji matsva uye kuwedzera ruzivo rwedu rwenyika yefizikisi.
Zviitiko zvine chekuita nazvo zvakaita seHall effect, simba reLorentz muzvishandiso zvinomhanyisa zvinhu, uye magnetoresistance zvinoratidza simba remagineti riri kupararira munzvimbo dzakasiyana dzesainzi netekinoroji. Sezvo tekinoroji netsvagiridzo zvichifambira mberi, kunzwisisa kwedu masimba emagineti nemashandisirwo awo kucharamba kuchikura, zvichivhura mukana wekuvandudza zvinhu zvitsva zvine hunyanzvi uye zvinobudirira mune ramangwana.
