ib qho tseem ceeb tshwm sim tswvyim
Cov xwm txheej tseem ceeb yog hais txog cov yam ntxwv tshwj xeeb ntawm lub cev thiab cov xwm txheej uas muaj ib yam khoom nyob hauv lossis ze rau lub xeev tseem ceeb. Xyoo 1869, thaum T. Andrews kawm txog qhov sib txawv ntawm qhov ceev ntawm cov roj carbon dioxide roj thiab kua, nws pom tias thaum qhov kub yog 31.04 ℃, qhov ntom ntawm roj thiab kua tau los ua qhov qub, thiab thaj tsam ntawm ob theem ploj, uas tau hu ua qhov tseem ceeb xeev.