Supercooling yog thaum cov khoom ua kom txias ib ntus hauv qab nws qhov chaw khov yam tsis dhau los ua khoom. Qhov no tshwm sim thaum tshav kub raug tshem tawm ntawm cov kua sai heev uas cov molecules tsis muaj sijhawm txaus los kho lawv tus kheej hauv cov qauv txiav txim ntawm cov khoom. Supercooling tseem hu ua undercooling.
Dab tsi yog qhov txias txias thiab vim li cas thiaj tshwm sim?
Supercooling, tseem hu ua undercooling, yog tus txheej txheem ntawm txo qhov kub ntawm cov kua lossis roj hauv qab nws qhov chaw khov yam tsis tau ua ib qho khoom. Nws ua tiav qhov no thaum tsis muaj cov noob siv lead ua lossis cov nucleus nyob ib puag ncig uas cov qauv siv lead ua tuaj yeem tsim.
Vim li cas peb thiaj xav tau kev txias?
Vim li cas undercooling xav tau rau solidification? … Undercooling yog tsim nyog rau kev tsim cov khoom vim nws qhov sib txawv ntawm qhov kub thiab txias nws tsim lub zog tsav uas pab kom kov yeej qhov kev tawm tsam los ntawm cov khoom. Qhov tshwm sim no tuav los ntawm kev hloov pauv ntawm cov theem ua kua rau hauv daim ntawv gaseous.
Vim li cas thiaj li xav tau undercooling rau homogeneous nucleation?
Qhov no yog vim hais tias lub zog interfacial nkag mus rau lub sijhawm exponential ua lub voos xwmfab. Yog li, thaum lub sij hawm nucleation, lub kaw lus yog rhiab heev rau interfacial zog xav. [1] Lub vojvoog tseem ceeb ntawm lub nucleus nce nrog qis qis. … [3] Pawg ib txwm loj hlob thiab ua nuclei.
Koj tiv thaiv qhov txias txias li cas?
Ntau cov txheej txheem khov tau simtiv thaiv supercooling. Forsythiarootsectionspartiallyimbeddedinicedidnotsupercool, tab sis cov seem khov nyob rau hauv cov huab cua nyob rau hauv moist tsev cog khoom av, los yog qhwv nyob rau hauv cov ntaub so ntswg daim ntawv supercooled rau -2 rau -6oC ua ntej khov.
