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根据漂浮的条件F_浮=G_物可知,同一支密度计漂浮在不同的液体中所受浮力的大小是相同的;又根据阿基米德原理F_浮=ρ_液V_排g可知,在浮力相同时,ρ_液与V_排成反比,即ρ_液大的V_排小。因此,同一支密度计,漂浮在密度大的液体中时,排开液体的体积小,浸没在液面下的长度短,也就是说密度计上的数字上小下大。然而,对于密度计上的刻度疏密分布情况,有些教师不是很清楚,至于为什么刻度疏密分布
According to the floating condition F_float=G_, the same buoyancy of the same density meter floating in different liquids is the same; according to Archimedean principle F_float=ρ_liquid V_row g It can be seen that when the buoyancy is the same, ρ_liquid is inversely proportional to V_, that is, V__ of the ___________________________is smaller. Therefore, when the same densitometer floats in a dense liquid, the volume of the liquid to be discharged is small, and the length of the liquid immersed under the liquid surface is short, that is, the number on the densitometer is small and large. However, for the density distribution on the density meter, some teachers are not very clear as to why the scale is densely distributed.