Pulogalamu ya mayunitsi kutentha zikuyimira kukula kwakuthupi kwa kutentha thupi, kapena malo. Kutentha ndi katundu wokhudzana ndi kuyenda kwa tinthu tomwe timapezeka mthupi ndi mlengalenga, kutengera pamenepo, amatsimikiza matupi osiyanasiyana, yomwe mwina yotchuka kwambiri ndi boma: sizachilendo kuwona izi m'madzi, momwe kutentha kumatsimikizira ngati thupi lomwelo (madzi) lidzakhala olimba, madzi kapena gaseous state.
Zomwezo zimachitika ndi zinthu zonse, kukhala wokhoza kudziwa mwa aliyense wa iwo malo otentha omwe azikhala olimba pansi ndi pamwamba. madzi (limatsogolera mfundo) ndi kotentha komwe kumakhala madzi pansi ndi mpweya wabwino pamwamba (evapode point).
Chifukwa chake, kutentha kwakuthupi ndikofunikira pochizira matupi ndi zinthu, ndipo ndikofunikira kuti muzitha kuwerengera. M'mbiri yonse anali kuwonekera njira zosiyanasiyana zoyezera kutentha, Amagwira ntchito pamilandu yosiyanasiyana. Zofunika kwambiri zitatuzi zidzafotokozedwa mwatsatanetsatane, momwe adzawonekera:
- Pulogalamu ya digiri Fahrenheit Adakonza mu 1724, ndipo adatsimikiza pansi pa mfundo zitatu m'njira yoti akaunti yake isayende molingana molingana. Kugwiritsa ntchito kwake kuli ponseponse ku United States, kosagwiritsa ntchito sayansi.
- Pulogalamu ya digiri Celsius idayambitsidwa mu 1742, ndipo kutsimikiza kwa kukula kwake kunapangidwa pansi pa lingaliro la kuzizira ndi kutentha kwa madzi0 Celsius pokhala pomwe madzi amasinthira kuchoka pa olimba (ayezi) kukhala madzi (kapena mosemphanitsa), ndi 100 Celsius mulingo womwe, ukadutsa kale, madzi amawira ndikusintha kukhala nthunzi. Mulingo uwu umagwiritsidwa ntchito kutentha kwatsiku ndi tsiku m'malo ambiri padziko lapansi, komanso umapezekanso m'mitundu yosiyanasiyana ya maphunziro asayansi.
- Pomaliza, a Digiri ya Kelvin idaperekedwa m'zaka za m'ma 1900, ndipo imadziwika kuti a Kutentha kotheratu popeza imayika malo ake 0 pamphamvu yamagetsi yotsika kwambiri, ndiye kuti, pomwe ma particles samayenda. Mwanjira imeneyi, palibe 0 Kelvin, ndipo pamtundu wina uliwonse zinthu zonse zimakhala zolimba. Ndizofala pakugwiritsa ntchito kwasayansi komanso pafupifupi kulibe kugwiritsa ntchito tsiku ndi tsiku, ndipo sichiyimiriridwa ndi chikwangwani cha digiri (°) chifukwa sichichitika pang'onopang'ono koma chachikulu.
Mwadongosolo lazinthuzi, kutentha katatu kosiyanasiyana kuyenera kukhala ndi njira zomveka zosinthira. Nazi kusintha komwe kungachitike pakati pamagawo otentha, ndi momwe ayenera kuchitidwira moyenera
- Kuchokera ku Celsius kupita ku Kelvin: KELVIN = CELSIUS + 273.15
- Kuchokera ku Celsius kupita ku Fahrenheit: FARENHEIT = (CELSIUS) 9/5 + 32
- Kuchokera ku Fahrenheit mpaka Celsius: CELSIUS = (FARENHEIT - 32) * (5/9)
- Kuchokera ku Fahrenheit kupita ku Kelvin: KELVIN = (FARENHEIT - 32) * (5/9) + 273.15
- Kelvin kupita ku Celsius: CELSIUS = KELVIN - 273.15
- Kuchokera ku Kelvin kupita ku Fahrenheit: FARENHEIT = ((KELVIN - 273.15) 9/5) + 32
Kuchokera pa zochitika zomwe zawonedwa, zitsanzo zina zakutembenuka zitha kutchulidwa kuti ziwonekere bwino.
- 300 K = 26.85 ° C
- 80 ° C = 176 ° F
- 25 ° C = 298.15 K
- 125 K = -148.15 ° C
- 250 ° C = 176 ° F
- 250 K = -9.67 ° F
- 100 ° C = 373.15 K
- 80 K = -315.67 ° F
- 800 K = 526.85 ° C
- 300 K = 80.33 ° F.
- 20 ° C = 68 ° F
- 5 ° C = 41 ° F
- 30 ° F = -1.11 ° C
- 100 ° F = 37.77 ° C
- 15 ° F = 263,706K
