Te whakamāramatanga o ngā waeine ā-ao
Pūnaha o ngā Wāhanga
Hei tauira, ki te ine koe i tō teitei, ā, ka ripoatahia hei 100, kāore he tikanga o te hua. Waihoki, ki te ine koe i tō taumaha tinana, ā, ka ripoatahia hei 20, kāore hoki he tikanga o te hua, ā, kāore e mārama ki ētahi atu. Haunga te ripoata i tētahi tau, i tētahi whika rānei, me haere tahi mai hoki te ine me tētahi waeine. Ki te mea koe ko tō teitei he 2 fatoma, ko te 2 te tau o te ine, ā, ko ngā fatoma ngā waeine e whakamahia ana e koe. Ka mārama te hunga kua taunga ki te whakamahi i ngā fatoma ki tēnei ine. Ki te ine rānei koe i te roa o tētahi tēpu e whakamahia ana e koe i roto i te akomanga, ā, ka ripoatahia hei 5 whanganga, ka mārama te hua ki ētahi atu kua whakamahi i ngā whanganga hei waeine.
He maha ngā momo waeine e whakamahia ana i te ao, i runga i ngā tikanga ā-rohe. Hei tauira, ko te waeine roa i whakamahia i Ingarangi ko te iari, ko te waeine roa i whakamahia i Parani ko te waewae, ko te waeine roa i whakamahia i Ihipa onamata ko te whatianga. Mena kua taunga koe ki te whakamahi i te waeine whanganga, i te waeine whutu rānei, kātahi ka pānui koe i tētahi tuhinga e kī ana ko te maunga teitei rawa atu o te ao he 10.000 iari, hei tauira, ka tino pōhēhē koe, ā, kāore he pikitia mārama mō te teitei o te maunga.
Ko te whakamāramatanga o te 1 whanganga ko te tawhiti i waenganui i te pito o te koromatua me te pito o te maihao tohu ina totorohia. Ko te 1 fathom te tawhiti i waenganui i te pito o te maihao waenga me te pito o te ringa ina totorohia te ringa. Ko te 1 iāri te tawhiti i waenganui i te pito o te ihu o te kingi o Ingarangi (1120 AD) me te pito o tōna ringa kua totorohia. Ko te 1 putu te roa o te waewae o Kingi Louis XIV, Kingi o Parani. Ko te 1 whatīti te tawhiti i waenganui i te tuke o te ringa me te pito o te maihao waenga ina totorohia. Ko te 1 whanganga, 1 fathom rānei, 1 iāri rānei, 1 putu rānei, he tauira o te waeine taketake o te roa. Mena ko te roa o te tēpu = 5 whanganga, ko te roa o te tēpu he 5 ngā wā o te whanganga o te tangata e ine ana. I tēnei wā, ka whakamahia te whanganga tangata hei waeine paerewa mō te ine i te roa.
He mea nui kia mārama ko te tinana tangata ka tipu, nō reira ka taea te whakarerekē i te whanganga, te whutu, te whatī, te putu, te iari rānei. Waihoki, mā te whakamahi i ngā ine rerekē ka whakapoauau pea te hunga kāore i te mōhio ki aua ine. Hei whiwhi i ngā inenga tika me te pono, me whai inenga turanga paerewa e kore e rerekē, ā, ka taea te whakaputa anō kia taea ai te whakamahi puta noa i te ao.
Ko te pūnaha waeine i whakamahia e ngā kaipūtaiao me ngā miihini o te ao katoa i tapaina tuatahitia ko te pūnaha ine. Mai i te tau 1960, kua kiia ko te Pūnaha Ao, ko te SI rānei hei whakarāpopototanga. Kei te ripanga o ngā rahinga turanga ngā waeine SI mō ngā rahinga turanga.
Ka taea te whakaatu i ngā waeine rahinga kua ahu mai i roto i ngā waeine taketake e rua, neke atu rānei; hei tauira, ko te waeine horahanga ko m 2 , ko te waeine tere ko m/s, ko te waeine kiato, papatipu rānei ko kg/m 3 , ko te waeine whakateretere ko m/s 2 , ko te waeine kaha ko kg m/s 2 , ko te waeine mahi me te pūngao ko kg m 2 /s 2 , ko te waeine mana ko kg m 2 /s 3.
Ko ētahi rahinga i ahu mai i ngā waeine he maha ngā waeine rahinga taketake ka hoatu he ingoa motuhake; hei tauira, ko te waeine o te kaha kg m/s 2 ka kiia ko Newton (N), ko te waeine o te mahi me te pūngao kg m 2 /s 2 ka kiia ko Joule (J), ko te waeine o te mana kg m 2 /s 3 ka kiia ko Watt (W).
Kupumatua Wāhanga
Ka taea e tātou te whakaatu i ngā waeine SI hei rahi ake, hei iti ake rānei mā te whakamahi i ngā kupu whakataki waeine. Ko ngā kupu whakataki waeine he tauwehenga o te 10 o te waeine turanga. I te nuinga o te wā ka tāpirihia ngā kupu whakataki waeine ki ngā waeine SI hei hanga waeine hou.
Ngā tauira o ngā kupumatua waeine i tāpirihia ki ngā waeine turanga
Ngā tauira o ngā kupumatua waeine i tāpirihia ki ngā waeine i ahu mai:
1 kW (kirowati) = 103 W = 1000 W —> W = Watt (Wāhanga mana)
1 MW (megawatt) = 106 W = 1000.000 W —> W = Watt (Wāhanga mana)
1 MV (megavolt) = 106 V = 1000.000 V —> V = Ngaohiko (Wāhanga o te ngaohiko hiko)
1 nC (nanocoulomb) = 1 nC = 10-9 C —> C = Coulomb (Wāhanga o te kaha hiko)
1 kPa (kiropascal) = 103 Pa —> Pa = Pascal (Wāhanga pēhanga)
1 GHz (kikāhera) = 109 Hz —> Hz = Hertz (Ine auau)
