Lub ntsuas qis ntawm qee qhov nruab nrab yog qhov sib npaug zos rau qhov ceev ntawm lub teeb nyob hauv lub tshuab nqus tsev c thiab qhov sib piv ntawm cov teeb meem ntawm lub teeb nyob hauv nruab nrab v: n = c / v
Ntau cov tshuaj ntshiab muaj qee yam qis txha nqaj qaum. Yog hais tias cov khoom muaj impurities, lub ntsuas qis qis yuav pauv, thiab deviations yuav tshwm sim. Qhov ntau impurities, qhov ntau dua qhov sib txawv.
Lub tuam txhab lag luam tshwj xeeb hauv kev muag txhua hom ntawm refractometers , thiab txais tos cov neeg muas zaub uas xav tau kev sab laj thiab yuav khoom. Peb yuav muab koj cov kev pabcuam zoo thiab khoom tsim.
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