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Hydrometer
Purpose
To measure the density of a liquid.
Equipment
Hydrometer, one-liter graduated cylinders with water and saline solution.
Images
Description
If the hydrometer is immersed in a graduated cylinder filled with water, the reading on the scale (at right in picture) should be C(W) = 1000, indicating that the scale is calibrated for water. If the hydrometer is put into the saline solution, the number C(L) at the level of the liquid is read. The density D(L) of the unknown liquid is given by: D(L)=C(L)*D(W)/1000,where D(W) is the density of water in kg/m^3. One can measure densities between 0.7 and 2.0 using this device. ◙
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See pagesf1. pressure in static fluids
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See pagesf2. buoyancy
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See pagesf3. surface tension
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See pagesf4. fluid in motion
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See pagesf5. pressure in moving fluids
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See pagesf1. pressure in static fluids
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See pagesf2. buoyancy
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See pagesf3. surface tension
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See pagesf4. fluid in motion
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See pagesf5. pressure in moving fluids
Physics Lab Demos