Viscosity Kit

The kit comprises a 1 m long, 50 mm diameter acrylic tube, fitted with two rubber bungs and supplied with five nitrile O-rings on the outside. Also included is a pack of 4 mm and 6 mm diameter ball bearings. In use, the tube is filled with a liquid such as water, glycerol, wallpaper paste etc and the O-rings arranged at even, measured intervals down the tube. Ball bearings can be dropped into the liquid and timed over the measured distances with a stop watch. The distances and timings allow the idea of terminal velocity to be explored as well as the concept of different viscosities.

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