Kab tshuam viscosity yog qhov tshuam uas siv los pab txheeb xyuas qhov ntev lossis qhov qis ntawm cov dej uas tau txheeb. Nco seb nws zoo li qhov txheeb xyuas qhov sib txawv rau hauv honey thiab dej. Honey yog qhov ntev (lossis qhov viscosity siab), thiab dej yog qhov qis (viscosity yooj). Ua kom paub qhov viscosity ntawm cov dej yog qhov tsaus rau ntau yav tshuab, piv txwv li yav tshuab noj, yav tshuab kho, thiab yav tshuab ua noj qab. Nws pab cov khoom ua kom paub tias cov khoom ntawd yog zoo heev. Piv txwv li, yog tias cov khoom ua ua salad dressing, lawv yuav tsum paub tias qhov dressing yuav tsum ntev li cas kom cov neeg siv yuav noj tau. Nyob rau ZONWON, peb paub tias qhov tshuam viscosity yog qhov tsaus rau kev siv, Viscometers uas yog qhov peb cov tshuam viscosity yog yooj yim rau siv thiab muaj peev xwm.