Physics | Electricity and Electromagnetism | Electrostatics A. Malvern Electrostatics Kit A
Ideal for small group experiments in electrostatics. The set is built around the dual-purpose electroscope which, while being suitable for general work also enables comparative measurements to be made on the activity of weak radioactive materials. The electroscope has an internal transparent scale divided 0 to 90° (x 10°). Removable glass panels are provided at the front and back, one clear and one ground. A removable insulation bush is fitted into the top of the case, which supports the plated metal blade to which the gold leaf may be attached, and a 4mm socket earthing terminal is fitted at the side of the case. Two interchangeable electrodes are supplied - a 50mm disc on a peg and an elongated hook 160mm long, which may be removed after charging by using an insulating rod. Isolating the gold leaf mount reduces its capacity and increases the sensitivity of the electroscope for radioactivity experiments.
The kit comprises: • 1 x Electroscope with top plate and hook electrode • 1 x Packet of gold leaves • 4 x Metallised polystyrene spheres • 1 x Reel of very fine nylon thread • 2 x Polythene plate, 75mm square • 1 x Electrophorus plate, 50mm diameter with insulating handle • 1 x Proof Plane • 2 x Aluminum Calorimeters • 1 x Cellulose acetate strip • 1 x Polythene strip with woolen rubber • 1 x Stirrup for suspending strip
E8H26655 B. Digital Coulombmeter
This unit is a quantitative alternative to the gold-leaf electroscope with internal capacitance 1µF, and max. p.d. between terminals of 100V. It can be charged by contact or by induction by bringing a charged body up to the 25mm collecting plate. The 3½ digit display shows charge in the range of -1999 to +1999nC. A reset button discharges the unit as required. Ideal for use with the 4.2kV Battery Top EHT Unit B8H28305. Two 4mm terminals on the top are used for connection to ground and to the charging body. Mass: 0.25kg
Size: 95 x 90 x 50mm Powered by an internal PP3 battery (not supplied).