Mō te parahi

ParahiKo tētahi o ngā konganuku tuatahi i kitea, i whakamahia hoki e te tangata, he papura-whero, he taumaha motuhake 8.89, he ira rewa 1083.4℃. E whakamahia whānuitia ana te parahi me ōna koranu nā te mea he pai te kawe hiko me te kawe wera, he kaha te ātete ki te waikura, he ngāwari te tukatuka, he pai te kaha kume me te kaha ngenge, ko te tuarua anake ki te maitai me te konumohe i roto i te whakamahinga rauemi konganuku, ā, kua noho hei rauemi taketake me ngā rauemi rautaki nui i roto i te ōhanga o te motu me te oranga o te tangata, ngā kaupapa tiaki whenua me ngā mara hangarau teitei. E whakamahia whānuitia ana i roto i te umanga hiko, te umanga mīhini, te umanga matū, te umanga tiaki whenua me ētahi atu tari. Ko te paura parahi pai he mea kukū mai i te konganuku mata he parahi iti te kounga kua eke ki tētahi taupū kounga mā te tukanga whakapai ake, ā, ka taea te tuku tika ki ngā kaiwhakarewa mō te whakarewa parahi.

He konganuku taumaha te parahi, ko tōna ira rewa he 1083 nekehanga Celsius, ko tōna ira kohua he 2310 nekehanga, he papura-whero te parahi parakore. He pai te kawe hiko me te kawe wera o te konganuku parahi, ā, ko tōna kawe hiko te tuarua o ngā konganuku katoa, ko tōna tuarua anake ki te hiriwa. Ko tōna kawe wera te tuatoru, ko tōna tuarua ki te hiriwa me te koura. He tino ngāwari te hanga o te parahi parakore, he rite te rahi ki te pata wai, ka taea te kume ki roto i te miro 2,000 mita te roa, te takai rānei ki roto i te pepa konutea mārama ake i te mata o te moenga.

 

Ko te tikanga o te "whakakikorua parahi whūkawa mā" he "parahi whūkawa me te paninga mā i te mata". Me mārama motuhake te "whakakikorua mā" me te "parahi whūkawa".

Whakakikorua mā -- He mā te tae o te paninga. Mēnā he rerekē te rauemi paninga, he rerekē rānei te kiriata whakakorekore, he rerekē anō hoki te tae o te paninga. He mā te tine parahi phosphor mō ngā taputapu hiko, kāore he whakakorekore.

 

Parahi whākawa - he parahi kei roto he whākōkī. He ngāwari te whakarewa i te parahi whākōkī, ā, he pai te ngāwari, ā, he mea noa te whakamahi i roto i ngā taputapu hiko.

 

Parahi wherohe parahi. I ahu mai tōna ingoa i tōna tae papura. Tirohia te parahi mō ngā āhuatanga rerekē.

He parahi parakore ā-umanga te parahi whero, ko tōna ira rewa he 1083 °C, kāore he panonitanga isomerism, ā, ko tōna kiato whanaunga he 8.9, e rima ngā wā o te konupora. Tata ki te 15% te taumaha atu i te maitai noa. He whero māwhero, he papura i muri i te hanganga o te kiriata waikura i runga i te mata, nō reira e kiia whānuitia ana ko te parahi. He parahi kei roto he nui o te hāora, nō reira e kiia ana hoki ko te parahi kei roto he hāora.

Ko te ingoa o te parahi whero he whero papura. Ehara i te mea he parahi parakore tonu, ā, i ētahi wā ka tāpirihia he iti noa ngā huānga tango-hauora, ētahi atu huānga rānei hei whakapai ake i te rauemi me te mahi, nō reira ka whakarōpūtia hoki hei koranu parahi. Ka taea te wehewehe i ngā rauemi tukatuka parahi Hainamana ki ngā wāhanga e whā e ai ki te hanganga: te parahi noa (T1, T2, T3, T4), te parahi kore-hāora (TU1, TU2 me te parahi parakore-teitei, kore-hāora), te parahi tango-hauora (TUP, TUMn), me te parahi motuhake (parahi āheni, parahi tellurium, parahi hiriwa) me te iti noa o ngā huānga koranu. Ko te kawe hiko me te wera o te parahi te tuarua ki te hiriwa, ā, he whānuitia te whakamahinga i roto i te hanga taputapu kawe me te wera. Ko te parahi i roto i te hau, te wai moana me ētahi waikawa kore-hauora (waikawa hauwaiora, waikawa whanariki waimeha), te kawakore, te otinga tote me te maha o ngā waikawa waro (waikawa acetic, waikawa citric), he pai te ātete ki te waikura, e whakamahia ana i roto i te umanga matū. Hei tāpiritanga, he pai te kaha o te parahi ki te whakarewa, ā, ka taea te hanga hei momo hua haurua-oti me ngā hua kua oti mā te tukatuka matao me te kirihou wera. I ngā tau 1970, i nui ake te hanga o te parahi whero i te katoa o ngā koranu parahi katoa.