Falling-Ball Viscometer

This apparatus measures kinematic viscosity, and thus dynamic viscosity, of translucent liquids. Learning Objectives: Determination of kinematic and dynamic viscosity of translucent liquids. Determination of the drag coefficient of spheres or other models (not supplied). Learn about Falling-Ball Viscometer specifications for optimal educational outcomes..

The viscosity of a fluid characterises its resistance to flow. Studying the displacement of a body in a still liquid is considered equivalent to studying fluid flow around a static body.

One wall-mounted support panel.
2 acrylic tubes illuminated by a fluorescent tube.
2 tanks and 2 valves for ball recovery and tube drain.
1 set of balls of different diameters and materials (stainless steel, aluminium, plastic).
1 stopwatch.