Temperature Effects

The effect of temperature on viscosity of a liquid can be seen in the video linked here.  The graduated cylinders shown both have a delivery apparatus on the top that helps to eliminate air bubbles from clinging to the steel b.b.'s dropped into the glycerol (air bubbles can cause variations to expected behavior).  The cylinder on the left is filled with glycerol cooled by an ice bath, while the glycerol on the right has been heated to 45oC.  The viscosity of the cold glycerol is greater than that of the warm glycerol, as can be seen by the much slower velocity of the sphere in the left cylinder.

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Thanks to D. J. Ulness and J. D. Koski for help in the construction of this page.