He tuhinga mō te Huringa o ngā tauine pāmahana
He rerekē ngā tauine pāmahana o te Celsius me te Fahrenheit. Mēnā ka inehia te pāmahana o tētahi mea, ā, ka whakaaturia ki te tauine Celsius, me kī te pāmahana o te mea ki te Fahrenheit, kātahi ka hurihia mai i te tauine Celsius ki te tauine Fahrenheit. I tēnei wāhanga, ka ako tātou ki te whakarerekē, ki te huri rānei i tētahi tauine pāmahana.
I te pēhanga o te 1 atm, ko te pāmahana o te pūwāhi tio mō te inemahana Celsius = 0 oC, ko te inemahana Fahrenheit ia = 32 oF. i tētahi atu taha, i te pēhanga o te 1 atm, ko te pāmahana o te tohu kohua mō te inemahana tauine Celsius = 100 oC, ko te inemahana me te tauine Fahrenheit = 212 oF.
Hei whakangāwari ake i a koe ki te huri i te tauine Celsius ki te tauine Fahrenheit, ki te huri rānei i te tauine Fahrenheit ki te tauine Celsius, kia maumahara ki te 0 oC=32 oF me te 100 oC=212 oF. I te tauine Celsius, i waenganui i te 0 oC me 100 oKo te C he 100oI runga i te tauine Fahrenheit, i waenganui i te 32 oF ki te 212 oE 180 ngāo.
3.1 Tahurihia te tauine Celsius ki te tauine Fahrenheit
Hei tiki i te pāmahana i runga i te tauine Fahrenheit (T), whakareatia te pāmahana i runga i te tauine Celsius (T C ) i te tuatahi ki te 9/5, kātahi ka tāpirihia te 32 °.
3.2 Tahurihia te tauine Fahrenheit ki te tauine Celsius
Hei tiki i te pāmahana i te tauine Celsius (T C ), whakaitihia te pāmahana i te tauine Fahrenheit (T F ) mā te 32 ° , kātahi ka whakareatia mā te 5/9.
4. Inemahana hau rōrahi-pūmau
I mua ake nei, kua ako tātou ki te whakataurite i tētahi inemahana. Ko te inemahana e whakamahia ana e tātou he inemahana mercury, kāore he tauine. Ki te whakataurite tātou i ngā inemahana e rua o ngā momo rerekē, pērā i te inemahana mercury me te inemahana waipiro, he rite tonu ngā tauine o ngā inemahana e rua i te 0 ° C (32 ° F rānei) me te 100 ° C (212 ° F rānei). Ki te whakamahia e tātou ngā inemahana e rua hei ine i te pāmahana o te hau, kāore e rite tonu ngā tau e whakaaturia ana e ia inemahana. Ka taea e ngā inemahana mercury te whakaatu i te 48 ° C, ko ngā inemahana waipiro ia e whakaatu ana i te 46 ° C. Nā te mea he rerekē te tere o te horapa o te mercury me te waipiro. Waihoki ki ētahi atu momo inemahana, pērā i ngā inemahana bimetallic, me ētahi atu. Ko te tauine pāmahana e whakatauhia ana i tēnei ara e whakawhirinaki ana ki te āhua o te rauemi e whakamahia ana.
Nā te mea he hapa te tauine pāmahana kua tohua mā te whakamahi i te inemahana, me whai inemahana paerewa tātou. Mā te noho mai o tētahi inemahana paerewa ka āwhina i a tātou ki te whakatakoto i te tauine pāmahana kia tika ake, me te kore e whakawhirinaki ki te āhua o tētahi rauemi.
Ko te inemahana hau tino pai rawa atu he inemahana hau rōrahi-pūmau. Ko te kaupapa mahi o te inemahana hau rōrahi-pūmau, ka puritia te rōrahi hau kia mau tonu, kia kore rānei e rerekē. Ināianei, ina piki te pāmahana, ka piki anō hoki te pēhanga hau. I roto i te paipa 1 me te paipa tuarua kei reira te konukōre. Ka puritia te rōrahi hau kia mau tonu, mā te whakaara ake, te whakaheke rānei i te paipa tuarua kia mau tonu te mata konukōre i roto i te paipa 1 ki te tohu tohutoro. Ki te piki te pāmahana, ka piki anō hoki te pēhanga hau i roto i te ngongo. Nō reira, me hiki ake te paipa tuarua kia teitei ake kia mau tonu te rōrahi hau. Ka taea te mōhio ki te pēhanga hau mā te pānui i te teitei o te pou konukōre (h) i roto i te paipa 2. Ki te whakamahi i te tikanga ā-ringa, kia mahara ko te pou konukōre he 760 mm = 1 atm (1 hauātea). I roto i te inemahana hau rōrahi-pūmau matatau, kei reira he kaute pēhanga. Kua hangaia hoki ngā ipu kī tonu i te hau kia mau tonu te rōrahi o te hau. Nō reira, ko te pēhanga anake ka rerekē i te inehia.
5. Tauine Kelvin
Ki te tuhia te tapahi i te tūtohi i runga ake nei hei tapahi i te tuaka T o C, kātahi ka 0 te pēhanga hau, ko te pāmahana hau = -273.15 o C. Tērā pea ka whakaaro tātou he rerekē te pāmahana o te hau i te pēhanga o te 0 i runga i te momo hau i roto i te ngongo inemahana hau rōrahi-pūmau. I runga i te whakamātautau, ahakoa he rerekē te momo hau ina kore te pēhanga hau, ka uara tonu te pāmahana ki te -273.15 o C. Nō reira, ka taea e tātou te whakamahi i tēnei pāmahana hei tauine pāmahana paerewa (e mōhiotia ana ko te pāmahana kore tino). E mōhiotia ana tēnei pāmahana kore tino ko te tauine tino, ko te tauine Kelvin rānei. Ko Kelvin te ingoa o Lord Kelvin (1824-1907), he tohunga ahupūngao Piritana o mua.
I tēnei tauine, ka whakaaturia te pāmahana i roto i te Kelvin (K), ehara i te Kelvin ( o K) nekehanga. He rite tonu te mokowā i waenga i ngā nekehanga ki te tauine Celsius, engari ka nekehia te kore ki te 0 K. Nō reira, ko te 0 K = -273.15 o C me te 273.15 K = 0 o C. Ka taea te whakarerekē i te pāmahana i roto i te tauine Celsius ki te tauine Kelvin mā te tāpiri i te 273.15. Waihoki, ka taea te whakarerekē i te pāmahana o te tauine Kelvin ki te tauine Celsius mā te whakaiti i te 273.15.
T (K) = T ( o C) + 273.15
T ( o C) = T (K) – 273.15
