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ID number:  BIRRC-P0746
Institution:  Research and Cultural Collections
Named collection:  Historic Physics Collection
Artist / Maker:  W.G. Pye & Co. Ltd.
Title / Object name:  Capacitor - large air-spaced
Object type:  Capacitor
Place made:  Cambridge
Materials:  Brass and steel with teflon (or nylon?) insulators on a wooden base
Measurements:  51 x 27 x 37 cm
BIRRC-P0746a.jpg

A parallel plate capacitor consists of two conducting plates separated by a gap. Its capacitance depends on the area of the plates, the width of the gap and the material filling the gap. In this case the gap can be varied by coarse and fine lead screws with calibrated scales. The instrument was in use in undergraduate teaching laboratories at least between 1960s and 1980s.

Inscriptions / Translations:  W. G. PYE & Co.
MAKERS
CAMBRIDGE

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