Fingqa imithetho emithathu ye-thermodynamics ngomusho owodwa noma emibili ngamunye. Kumelwe ziqondwe umuntu ongeyena umfundisi.
Context:Imithetho ye-thermodynamics iqoqo lemithetho yesayensi echaza iqembu lezinombolo ezingokwenyama, njengokushisa, amandla, kanye ne-entropy, ezichaza izinhlelo ze-thermodynamic ngokulinganisela kwe-thermodynamic. Imithetho isebenzisa nemingcele ehlukahlukene yezinqubo ze-thermodynamic, njengokusebenza kwe-thermodynamic nokushisa, futhi isungula ubudlelwano phakathi kwabo. Zibonisa amaqiniso angokoqobo akha isisekelo sokuvimbela ukuba khona kwezinto ezithile, njengokuhamba okungapheli. Ngaphezu kokusetshenziswa kwazo ku-thermodynamics, ziyimithetho ebalulekile eyisisekelo ye-physics ngokujwayelekile, futhi ziyasebenza nakwezinye isayensi yemvelo.  Ngokwesiko, i-thermodynamics iye yaqaphela imithetho emithathu eyisisekelo, ebizwa ngokuthi umthetho wokuqala, umthetho wesibili, nomthetho wesithathu. Isitatimende esiyisisekelo ngokwengeziwe kamuva sabizwa ngokuthi umthetho wesithathu, ngemva kokuba imithetho yokuqala emithathu isunguliwe.  Umthetho we-zero we-thermodynamics uchaza ukulinganisela kokushisa futhi uyisisekelo sencazelo yokushisa: Uma izinhlelo ezimbili zisesilinganisweni sokushisa ngasinye nesistimu yesithathu, khona-ke zisesilinganisweni sokushisa komunye nomunye.  Umthetho wokuqala we - thermodynamics uthi, lapho amandla engena noma ephuma esimisweni (njengomsebenzi, ukushisa, noma into), amandla angaphakathi esimisweni ayashintsha ngokuvumelana nomthetho wokulondolozwa kwamandla.  Umthetho wesibili we-thermodynamics uthi enkambweni yemvelo ye-thermodynamic, isamba sama-entropy ezinhlelo ze-thermodynamic ezisebenzisanayo asikaze sinciphe. Umphumela ovamile waleso sitatimende uwukuthi ukushisa akugudluli ngokuzenzakalelayo kusuka emzimbeni obandayo kuya emzimbeni ofudumele.  Umthetho wesithathu we - thermodynamics uthi i - entropy yesimiso isondela enanini elingaguquguquki njengoba izinga lokushisa lisondela ku - zero eliphelele. Ngaphandle kwama-non-crystalline solids (ingilazi), i-entropy yesistimu ku-zero ephelele ngokuvamile iseduze no-zero.  Umthetho wokuqala nowesibili uvimbela izinhlobo ezimbili zemishini yokuhamba unomphela, ngokulandelana: umshini wokuhamba unomphela wohlobo lokuqala okhiqiza umsebenzi ngaphandle kokungeniswa kwamandla, nomshini wokuhamba unomphela wohlobo lwesibili oguqula amandla okushisa ngokuzenzekelayo abe umsebenzi womshini.
Umthetho wokuqala uthi amandla asesimisweni esivaliwe ayanyamalala. Amandla angaphezu kwalawo ayekhona awenakudalwa, futhi amanye amandla awanakubhujiswa.  Umthetho wesibili uthi ukushisa kuhamba kusuka emzimbeni ofudumele kuya emzimbeni obandayo.  Umthetho wesithathu uthi i-entropy yesimiso ihlobene nokushisa kwaso, futhi iyancipha njengoba izinga lokushisa lehla.