He aha te Whakaoho Hikohiko?
He āhuatanga ā-tinana taketake te whakapūngao hikohiko e āhei ai te huri i te pūngao miihini ki te pūngao hiko, me te hurihanga anō hoki. I kitea tuatahitia e Michael Faraday rāua ko Joseph Henry i te tīmatanga o te rautau 19, ā, kua waiho tēnei ariā hei tūāpapa mō ngā hangarau hou, tae atu ki ngā whakaputa hiko, ngā whakawhiti hiko, me ngā motuka hiko. Ka tūhuratia e tēnei tuhinga te whakamāramatanga, ngā mātāpono taketake , ngā tono, me te hiranga o te whakapūngao hikohiko i roto i te oranga o ia rā.
Te Mārama ki te Whakaoho Hikohiko
Ko te whakapūtanga hikohiko e pā ana ki te tukanga e papa aukume e huri ana hei whakaputa i te iahiko hiko i roto i te kaiārahi. Nā Faraday i whakatakoto Ka taea te whakangawari i te ture o te whakapūngao hikohiko penei: "Ko te nui o te iahiko whakapūngao i roto i te ara iahiko he rite ki te huringa o te rerenga aukume e puta ana i roto i tētahi wā." I roto i te pāngarau, ko te ture a Faraday i kīia penei:
\[ E = -\frac{d\Phi}{dt} \]
Ko \(E\) te kaha hiko whakaoho (EMF), ā, ko \(\Phi\) te rerenga aukume e haere mai ana i roto i ngā waeine o ngā webers (Wb).
Ngā Mātāpono Taketake o te Whakaoho Hikohiko
Ka taea te whakamārama i te kaupapa matua o te whakapūtanga hikohiko mā te whakamahi i ngā kōrero e whai ake nei:
1. Te Rerenga Aukume:
Ko te rerenga aukume ((Phi)) te hua o papa aukume (B) me te horahanga o te rohe e whitihia ana e te papa aukume (A), ka taea te whakaatu penei:
\[ \Phi = B \cdot A \cdot \cos(\theta) \]
ko \(\theta\) te koki i waenganui i te papa aukume me te horahanga.
2. Te Kaha Hiko Whakaoho (EMF):
Ki te rerekē te rerenga aukume i roto i tētahi ara iahiko i roto i te wā, ka puta he kaha hiko (EMF) i roto i te ara iahiko kati.
3. Te Ture a Lenz:
Ko te ahunga o te iahiko whakaoho he mea ātete tonu ki te huringa o te rerenga aukume e puta ai. Mā tēnei ture ka āwhina i te whakatau i te ahunga o te iahiko whakaoho, ā, he whakamahinga hoki o te mātāpono o te tiaki i te pūngao.
4. Te Whakataki i a Koe Anō:
Ina huri te iahiko i roto i te pōkai (solenoid, inductor rānei), ka puta he huringa o te rerenga aukume, ā, ka puta he kaha hiko i roto i te pōkai tonu.
Ngā Whakamahinga o te Whakaoho Hikohiko
1. Pūhiko Hiko:
He taputapu te whakaputa hiko e huri ana i te pūngao miihini ki te pūngao hiko mā te whakaawe hikohiko. I roto i te whakaputa hiko, ka puta he EMF i roto i te papa aukume e hurihuri ana, i te ara iahiko rānei e hurihuri ana i roto i te papa aukume, ka puta he iahiko hiko.
2. Whakawhitiwhiti:
Ka whakamahia ngā whakawhiti hiko hei whakanui, hei whakaiti rānei i te ngaohiko i roto i ngā ara iahiko AC. Ko tā rātou kaupapa mahi e hangai ana ki te whakaawe hikohiko, ina hangaia he papa aukume e huri haere ana e te iahiko AC i roto i te koiri tuatahi, kātahi ka puta he ngaohiko i roto i te koiri tuarua.
3. Mōta Hiko:
Ka mahi ngā motuka hiko i runga i te kaupapa He rite tonu ki te whakaputa hiko, engari he huripokitia te tukanga. Ka puta he kaha miihini ka tukuna ki te ara iahiko i roto i te papa aukume e huri ai.
4. Te Whakaoho Hikohiko i roto i ngā Whakamahana Whakaoho:
Ka whakamahia e ngā whakamahana hiko whakapūmau ngā papa aukume i hangaia e te iahiko AC hei whakamahana i ngā rauemi kawe hiko. Ina puta he iahiko hurihuri i roto i te rauemi i roto i te papa aukume, ka puta te wera i ēnei iahiko.
5. Ngā Pūoko Koiora me ngā Pūrere Hauora:
E whakamahia ana te arataki hikohiko i roto i ētahi taputapu hauora, pērā i te MRI (Magnetic Resonance Imaging), e kite ai i ngā papa aukume e hangaia ana e ngā kiko o te tinana tangata.
Te Hiranga i roto i te Oranga o Ia Rā
Kua whai wāhi nui te āhuatanga o te aukume hikohiko ki tō tātou oranga o ēnei rā. Anei ētahi tauira tūturu o tōna whakamahinga i roto i te oranga o ia rā:
1. Pūnaha Pūngao:
Ko te nuinga o te whakaputa hiko o te ao ka mahia mā roto i ngā kaihanga hiko hikohiko, mai i ngā pūtake pūngao ngā pūngao tuku iho pērā i ngā tipu hiko mamaoa, ki ngā pūtake pūngao hou pērā i te hau me te hiko wai.
2. Te Oranga o te Kāinga:
Mā te whakamahinga o ngā whakawhiti hiko i roto i ngā momo taputapu hiko ka āwhina i te whakarerekē i te ngaohiko hiko kia rite ki ngā hiahia o ngā taputapu o te whare. Hei tauira, ka whakamahia ngā urutau mō ngā waea pūkoro me ngā pona hei whakawhiti hiko iti.
3. Te kawe waka:
Ko ngā waka hou, pērā i ngā tereina tere-rahi, e whakamahi ana i ngā motuka hiko e mahi ana i runga i te kaupapa o te whakapūngao hikohiko. Ka whakamahia hoki e ngā pūnaha aukati whakaora te whakapūngao hei huri i te pūngao nekeneke o te waka hei pūngao hiko i te wā e aukati ana.
4. Whakawhitiwhiti Kōrero Ahokore:
E whakamahia ana te aukume hiko i roto i ngā hangarau whakawhitiwhiti ahokore pērā i te RFID (Radio Frequency Identification) me te NFC (Near Field Communication), e āhei ai te whakawhiti raraunga me te kore e pā tika ki te tinana.
Te Anamata o te Whakaoho Hikohiko
Kei te whānui haere tonu te pūmanawa o te whakapūngao hikohiko me ngā rangahau me ngā mahi auaha hou. Mā te rangahau anō ki ngā rauemi kawe hikohiko, ka taea te whakaputa i ngā papa aukume kaha me te kore e ngaro te pūngao, ka huaki te kuaha ki te whai huatanga pūngao teitei ake me ngā tono whānui ake. Hei tāpiri, ko te whanaketanga o te hangarau whakawhiti hiko ahokore (WPT), e āhei ai te utu taputapu ahokore, e whakaatu ana i te whānui me te hiranga o te kaupapa o te whakapūngao hikohiko mō te heke mai o te hangarau.
I roto i te ao hauora, mā ngā putanga hou o ngā tikanga hikohiko kore-whakaekenga ka taea te whakapai ake i te tautuhi me te maimoatanga o ngā mate, ā, ka whakaratohia he otinga haumaru ake, whai hua ake hoki mō ngā tūroro.
Whakamutunga
He āhuatanga taketake te whakapūngao hikohiko, ā, he whānuitia ngā whakamahinga i roto i ngā momo hangarau me te oranga o ia rā. Nā te kitenga me te whakamahinga o tēnei mātāpono kua huri te huarahi e whakaputa ai, e kai ai, e whakahaere ai hoki tātou i te pūngao hiko. Mai i ngā taputapu whare māmā ki ngā whakamahinga ahumahi me ngā whakamahinga hauora matatau, he mea nui te whakapūngao hikohiko i roto i te whakatairanga i te ao tangata. Ahakoa kei te tūhuratia tonutia tōna pūmanawa, ka noho tonu te whakapūngao hikohiko hei kaupapa matua mō ngā mahi auaha hangarau ā muri ake nei.
