Kumvetsetsa Machitidwe ndi Chilengedwe
Dongosolo ndi chinthu kapena gulu la zinthu zomwe zikuphunziridwa. Zinthu zina m'chilengedwe zimatchedwa chilengedwe. Kawirikawiri, dongosolo limalekanitsidwa ndi chilengedwe chake ndi "gawo/malire/olekanitsa."
Mwachitsanzo, tiyerekeze kuti tikufuna kufufuza madzi mu thermos. Madzi omwe ali mkati mwa thermos amapanga dongosolo, pomwe mpweya ndi zinthu zina zomwe zili kunja kwa thermos zimapanga chilengedwe. Makoma a thermos, galasi lomwe lili mkati ndi pulasitiki lomwe lili kunja, amagwira ntchito ngati chogawaniza. Thermos yamadzi ndi chitsanzo chimodzi.
Pali mitundu ingapo ya machitidwe, monga otseguka ndi otsekedwa. Dongosolo lotseguka ndi lomwe limalola kusinthana kwa zinthu ndi mphamvu pakati pa dongosolo ndi chilengedwe chake. Zitsanzo za machitidwe otseguka ndi monga zomera, nyama, ndi zina. Zomera nthawi zambiri zimayamwa madzi ndi carbon dioxide kuchokera ku chilengedwe (kusinthana kwa zinthu). Zomera zimafunanso kutentha kuchokera ku dzuwa (kusinthana kwa mphamvu). Anthu amaonedwanso kuti ndi machitidwe otseguka.
Dongosolo lotsekedwa ndi dongosolo lomwe sililola kusinthana kwa zinthu pakati pa dongosolo ndi malo ake. Dongosolo lotsekedwa limanenedwa kuti lapatulidwa ngati palibe kuthekera kwa kusinthana kwa mphamvu pakati pa dongosolo ndi malo ake. Dongosolo lotsekedwa limanenedwa kuti silipatulidwa ngati kusinthana kwa mphamvu pakati pa dongosolo ndi malo ake kuli kotheka. Chitsanzo cha dongosolo lotsekedwa lokha ndi botolo la thermos lokhala ndi madzi otentha. Makoma amkati mwa botolo la thermos nthawi zambiri amapangidwa ndi zinthu zotetezera kutentha. M'malo mwake, machitidwe ambiri opangidwa okha si abwino kwenikweni, ndipo kusinthana kwa mphamvu kumatha kuchitika, ngakhale pang'ono kwambiri.
