1. Thermal expansion thiab contraction ntawm cov khoom sib txawv
Yuav kom txuag tau nyiaj, qee tus neeg siv hom A rau cov kav dej kub thiab hom B rau cov kav dej txias, yog li cov dej xau feem ntau tshwm sim ntawm kev sib txuas ntawm hom AB. Qhov no yog vim cov ntaub ntawv sib txawv ntawm cov hom sib txawv, uas ua rau cov khoom sib txawv thermal expansion thiab contraction cov ntaub ntawv. Yog li ntawd, nws raug nquahu kom siv dej kub thiab dej txias. Siv tib lub npe ntawm cov kav dej kom tsis txhob muaj dej ntws.
2. Lub vuam yog luv, thiab lub sij hawm rau cov yeeb nkab yuav kub tsis txaus los yog ntev heev; cov yeeb nkab muaj dej thaum lub sij hawm vuam, thiab lub pob tw tsis khov.
Qhov no feem ntau tshwm sim los ntawm kev vuam virtual, thiab qee qhov tsis tuaj yeem kuaj pom txawm tias thaum lub sij hawm ntsuas siab. Yog li ntawd, yuav tsum muaj qee qhov yuav tsum tau ua rau tus tswv kub yaj, thiab nws tseem yuav tsum muaj qee yam kev tswj hwm ntawm cov kub yaj vuam.
3. Qhov zoo ntawm lub tshuab kub yaj tsis zoo
Qhov zoo ntawm lub tshuab kub yaj tseem tseem ceeb dua. Vim tias kub- yaj muaj qhov yuav tsum tau ua rau qhov kub thiab txias, tsis zoo- kub zoo- cov tshuab yaj tsis tuaj yeem ncav cuag qhov kub - melting teeb meem ntawm qhov kub, uas yuav cuam tshuam qhov zoo ntawm kub{ {4}} cov kav dej yaj.