Pith Balls

Cellulose Strip For producing positive charges relative to polythene when rubbed by woollen rubber..
Overall Dimensions : 250 x 25 x 1.5 mm

For demonstrating the effect of electric discharge from points.

The apparatus has 60 mm diameter six pointed star wheel with all the points curved in one direction. The wheel rotates freely on a pivot point mounted on a short stand & the stand is provided with a 4 mm connection socket on the round base.