He aha mea he electromagnet? Ko lakou ano a me ka manao

I ka 'atikala wehewehe ia ia he electromagnet, ma ka muli ia hana, a me ka mea mau mea i hoʻohana i kēia' ano o nā mākēneki.

magnetism

Paha kekahi o ka loa, heʻe piʻoloke ihola, akā, i ka mea ia manawa 'âina physical reactions mea magnetism. Akā, oi o ekolu tausani makahiki nei, i ike na haumana o ka wa kahiko Greece a me Kina i ka hana waiwai o "ʻume mākenēki na pohaku."

I ka Ia manawa, mākou nā mākēneki i kekahi mea hou,ʻo ka loa ikaika - ma ke kulanui o neodymium. Ua pinepine kuai me trinkets a halawai pu me ia e ia i loko o ka likeʻole ma o ka mea a me ka maomeka. Eia naʻe, mau kanaka ike pehea nui magnetism i ka iao? Iiaie oaoieei holomua.

Akā, ma ka hoʻomaka o ka XIX kenekulia ia ia e kekahi mea me neia me ka electromagnet hana. No laila, ka mea i electromagnet, pehea ia hana, a ma kahi e pili? Kēia ka mea a mākou e kamaʻilio i loko o kēia 'atikala.

ka wehewehena

Electromagnet - he kūikawā mea, i ka hana o ka i hana i kaʻume mākenēki kahua ma luna o ke noi ana o ka pila nuiʻikena. Ma ka hapanui o na hihia, ka mea, he o electromagnets o ka iniiaiie o Kahualoa Kokohi a me Kora naʻEsau, i mea ferromagnetic waiwai.

I ka'ōwili hao ua ana i ke keleawe a me Aluminum kaula o okoa thicknesses, ke akahele uhi me ka'īpale. Akā, he mau electromagnets o superconducting mea. Ia lakou iho meʻume mākenēki Kora naʻEsau i ka kila, hao-nikala oka a pau a me ka hao. I mea e loa kń i ke poho ma ka eddy paialewa, kaʻume mākenēki Kora naʻEsau i i o structurally a pau kau o ka lahilahi a lahilahi. Ano, ua ike mea he Mākēneki. E mākou noʻonoʻo i nui au mamuli o ka mōʻaukala o keia maikaʻi kēia mea hoʻoluku.

moʻolelo

Mea nana i hana electromagnet noonoo Uilyam Sterdzhen. Ua i ka mea nana i ka makahiki 1825 i ka mua keia o ka Mākēneki. Structurally i ka mea o ka paukūʻolokaʻa apana o ka hao, a i wahi iho la a puni ke ao insulated keleawe uea. I kekahi manawa, i ka wa ia ae ka uila pono, mai ka mea hiki ke hooheheeia koʻokoʻo Mākēneki ka waiwai loaa. A i ka wa a ka mea he pele ua keʻakeʻa, ka holoʻokoʻa lima kūlana kiʻekiʻe magnetism koke nalowale. He kēia mea e like ai - e ho'ā ai hoʻopio ina e pono ai - a e leie aku ka hoʻohana 'ana o electromagnets ma ka helu o nāʻanoʻenehana a me ka hanalima spheres.

Mākou Ua manaoia i ka ninau o ka mea he electromagnet. Ano, ke kālailai kona walaʻauʻana ano. Ka mea, ua kaawale ke kaumaha ma muli o ka hana o ka hoʻomakaʻia i kaʻume mākenēki kahua. Akā, kā lākou hana koe ka ia.

ano

Nā electromagnets mea o na kēia mau 'ano:

• 'ākilikai DC. Ma kēia hoʻoponoponoʻana o Kamehameha ʻume mākenēki koko ua loaʻa ma ka ikaika uilaʻikena hele ai lakou mawaena o ka'ōwili hao. Kēia 'o ia hoʻi i ka ikaika o ka attraction o ka electromagnet loli aʻe ke kaumaha wale nō ma luna o ka waiwai o ka papa ma mua ma luna o kona kuhikuhi ana i loko o ka o Kahualoa Kokohi.
• Polarized DC. I ka hana o ka electromagnet o keia ano ua muli ma ke alo o nā aupuni kūʻokoʻaʻume mākenēki fluxes. Inā mākou e kamailio e pili ana i polarizing, kona alo ua ana hana e paʻa nā mākēneki (i loko o pohihihi keia hihia - nā electromagnets), a me ia mea e pono e ho okumu i ka uʻi ikaika ka wā o ka'ōwili hao ua ua hō'āʻia. A me na hana o ka electromagnet hilinaʻi nui ma ka nui a me ka olelo o ka uilaʻikena i kolo ana ma ka o Kahualoa Kokohi.
• AC. Ma ia mau manaʻo, ka solenoid'ōwili hao mea mana AC uila. Alaila, me ka kekahi alapine (frequency)ʻume mākenēki koko hoʻololi kona kuhikuhi ana a me ka nui. A attraction max e loli iki ana ma nui wale, i ka ke kumu ka mea, ua "pulsating" mai ka palena iki a hiki i ka i kā mākou mea i ke alapine (frequency) i loaʻa he papalua waiwai me ka manao i ke alapine (frequency) o ka lako hou i ka pila nuiʻikena.

Me ia, ka mea a ko lakou mau manao e, ke i ua ike mau. Ano, e examples o ka pono o electromagnets mākou noʻonoʻo.

hana

Paha kela kanaka keia kanaka ma ka liʻiliʻi loa, hoʻokahi houʻana, akā, ua ike likeʻole o kēia mea e like me ka punohu Mākēneki. Kēia ao "pancake" o likeʻole ka ho, a mea he nui uʻi ikaika , a ua hoʻohana 'ia no ka lawe ana ukana, hamoʻia mea hiki ke hooheheeia, a me ka nui i kekahi'ē aʻe metala. I ka pono o ka mea o ia ka mana aku lakou e maona ai - a me ka a pau e haawe koke disengaged, a me ka hope versa. He nui simplifies ke kaʻina hana o ka ukana a me ka unloading.

Ka ikaika o ka electromagnet, ma ke alanui, he pōpilikia me ke kēia haʻilula: F = 40550 ∙ B ^ 2 ∙ S. E hoi kakou i ka mea i loko o oi au mamuli. Ma keia hihia, F - o ka mana i loko o kilograms (hiki ke ana i loko o Newtons i), B - i ka waiwai o ka hoʻokomo, a me S - e hana ana i honua kahi o ka noonoo o kanaka.

lapaau

Ma ka hopena o XIX kenekulia, na electromagnets i ua hoʻohana i laau lapaau. One ua hoʻohālike - he kūikawā mea i hiki ke wehe 'ia mai nā maka o na kino (metala shavings, a maloko, me ka unahiʻole, a pela aku).

A i ko makou manawa, e kekahi hoʻohana na electromagnets kaiāulu ma ka oihana lapaau, a me ka mea paha i kekahi o kēia mau mea, a i lohe a pau e pili ana - o MRI. Ua hana ma ke kumu oʻume mākenēki resonance kiʻi, a, ma ka mea, o ka nui a me ka ikaika electromagnets.

lako a

No hoi, e hoʻohana 'ia nā mākēneki i loko o kekahi mau' enekinia, a me ka uila no, i loko o ka wahi lulu poepoe, e like me pale. Oia wili lauoho, ua pono i loko o ia mea, ua nui loa hookeai a me ka oluolu i ka hana, akā, he mea kupono i loko o ka pilikia hoʻokaʻawale i ka hale - a pau o ia e e wehe, i ka nui kūpono ma ka hihia o ke ahi.

A, o ka papa, i ka hana a pau a ka mika ua hoonohonoho i na loina o ka electromagnetism.

E like me 'oe ke ike, keia mea he mea nui mea mea i hoʻohana ma kekahi mau kihapai o ka' epekema a me ka 'ike loea.