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Excellent quality training balls
bar charts
Proudly permanent ink marks on paper
Designed for ages 4-7
Van De Graaff Generator Motor Driven Early Years Excellent quality training ballsAn efficient design for all the usual electrostatic experiments and for where a continuous source of high voltage is required. It has a strong metal base with profiled hand grips, housing a quiet running a. c. motor. The discharge sphere may be plugged into the base or supported separately, linked to the arching post with a standard 4mm connecting lead. Charge Collecting Belt: silicone rubber having excellent insulation resistance Tracking: belt
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