Ka loa lawelawe metala i loko o ke ao nei

Value ke hooheheeia 'ana nānā' ia e lākou Nine Inch a me ka physical waiwai. Ma ka hihia o ia i ke ana, e like me ka uila conductivity, ka pilina mea ole pela straightforward. Most lawelawe metala, ina ke anakahi ana ma ka mehana ea (+20 ° C), - kālā. Akā, ke kāki kiʻekiʻe hoʻohaiki ana i ka hoʻohana 'ana o nā māhele kala ma ka uila a me ka microelectronics. Kala nā kumumea i loko o ia mau manaʻo pili wale i loko o ka hihia o oicyenoaaiiie expediency.

Ke physical ano o ka conductivity

Ka hoʻohana o ka mea hao conductors mai ka lōʻihi-ku mōʻaukala. Epekema a me nā kānakaʻenehana ka hana ana ma na kula o ka 'epekema a me ka' ike loea, ka hoʻohana uila mana no ka lōʻihi manawa e hooholo i ka pono no ka kaula, maʻi, hui 'ana, i paiia kaapuni papa , a no laila, ma luna, D. E kuhikuhi i ka loa lawelawe metala i loko o ke ao nei e kokua i ke kino nui i kapaʻia ka pila nui conductivity.

Manaʻo hoʻi conduction uila e kū'ē'ē mai. Laupaʻi 'aoʻao o conductivity pili me ka ia'ku mokuna, ma a ka lahui'ōnaehana o ka huahelu (Si) ua anaia mai ka manawa i loko o ohms. Unit o ka uila conductivity i loko o ke Si - Siemens. Russian inoa o keia mokuna - E nānā, kūwaho hoʻi - S. uila conductivity o 1 knm hapa i ka uila pukapuka me ka ia'ku o 1 ohms.

conductivity

Ua kora i ka hiki ana o ka waiwai, e hoʻomaka uilaʻikena kapa conductivity. Ka mea kiekie loa i loko o kēia anakahi i ka loa lawelawe metala. Keia ano hiki ke nānā 'ia no kekahi waiwai a meakino instrumentally a mai ka laulā hōʻike. Conductivity paukūʻolokaʻa alakaʻi mele mokuna lōʻihi, a me ka pa alima keʻa-mahele wahi ua pili i ka resistivity o ke alakaʻi mele.

System pa alima conductivity o Siemens no mika - S / m. E loaʻa mai i o na mea hiki ke hooheheeia loa lawelawe metala i loko o ke ao nei, lawa e hoohalike i ko lakou conductivity, manao paa au experimentally. Kekahi ke hoʻoholo i ka resistivity ma ka mea o ka kūikawā mea - microohmmeter. Kēia mau 'ano i inverse.

conductivity o ke hooheheeia

Ke loa manaʻo o ka uila pono me ka kuhikuhi pele o hoopiiia (particles) he oi harmonious waiwai nānā 'ana i anianiʻolu hoʻomaopop' ana i ke hooheheeia. Kauoha nā moku halihali mokulele i ka wa a ka uila kala pono i ka mea hiki ke hooheheeia e noa electrons a me Ion mea ole, e like me ka mea hana i ka wai a Media,. Ua Ua hoʻokūpaʻa experimentally i ka wā i kaʻikena, aole ia i hana i ka mea hiki ke hooheheeia particulate waiwai hoolilo ma waena o nā conductors.

Mea hao waiwai oko mai nā oi noa paa ana ma ka'ātoma kiʻekiʻe. Ka lilo o ka mea hiki ke hooheheeia na mea maalea, ua wehewehe aku ma ke alo o ka nui helu o "Singles" electrons. a, ka wā olohelohe ia lakou i ka iki ano o electromagnetic a koa kuhikuhi pele. Nolaila, ia mea, aole ia he mea hihiu ke hooheheeia mea maikaʻi conductors o ka uila papa, a me ka mea me neia hakakino hana kūleʻa OAOOUIEeE loa lawelawe metala. Ma nā hiʻona o ke aniani puka olu oia i 'ole o kekahi mea hiki ke hooheheeia ma muli o ko lākou ho'ākāka waiwai - kiʻekiʻe ka wela conductivity.

Luna i ka maikai conductors - ke hooheheeia

4 metala ka mea hiki cia no ka hoʻohana like pou conductors i māhele i nā kēia mea o ka nui me ka mahalo i ka conductivity, ana i knm / ka m:

1. Kala - 62,5 miliona.
2. Keleawe - 59,5 miliona.
3. Gold - 45,5 miliona.
4. Aluminum - 38 miliona.

Ua hiki ke ike ia ka loa lawelawe metala - kālā. Akā, e like me ke gula, ka mea, ua hoʻohana 'ia e hookupaa nui ae i ka pou mea ulana pukapuka wale i loko o kūikawā hoopii, kekahi. Ke kumu - ke kiʻekiʻe kāki.

Akā, ke keleawe a me ka Aluminum - o ka loa, he pono ole koho no ka uila a me ka uwea huahana aie i kā lākou haahaa ia'ku i ka uilaʻikena a me ka affordability. Other ke hooheheeia hoʻohana like conductors pohihihi keia.

Makaʻu i alakaʻi ai i ka conductivity o ke hooheheeia

ʻO ka mea lawelawe metala ho'ēmi i kā kona conductivity ka wā ma laila e noho'ē aʻe mea hoʻonui a me impurities. Ma oka a 'ē aʻe ma mua o "maemae" metala puka olu oia i' ole. Ua i kekahi ma ka 'aʻe' ana o symmetry, na mawae a me nā mā. Ke conductivity ua hoemi a me ka wā o ka Ambient piʻina.

Mahuahua ia'ku hoʻomaopop 'ana i ka oka a ua hoʻohana' ia ma ka paio hahana maoli nō hehee wale. He ole coincidence no ka hana o ka uila pae'ōnaehana hehee wale, e hoʻohana nichrome heaters, fechral a me nā oka a pau.

Most lawelawe metala - kēia maikai kālā hou i hoʻohana muaʻia e jewelers, coinage etc. naʻe, i loko o ka 'ana i kūpono a me ka mea hana o kona papa Nine Inch, a physical waiwai e hoʻomano i hoʻohana ... No ka laʻana, he okoa ka hoʻohana 'ana i nā aka wahi, a' Ohi a me ka haahaa ia'ku kālā ka penaʻana ua ālai 'papa pae mai'okesaside. Ke kūlana waiwai o ke kālā, a me kona oka a pinepine e hoʻohana no ka mea hoaponoia, hoʻowahāwahā ke kiʻekiʻe kāki.