Also included is a pack of 4mm and 6mm 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.
Product code: LA30-875