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Frictional
Electricity |
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51431 Proof Plane
Consisting of an ebonite rod with brass disc of 25 mm diameter.
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51432 Proof Sphere
Consisting of an ebonite rod with brass sphere of 18 mm
diameter.
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51433 Pith Ball Pendulum, Tate's
Metal rod on wooden base. Total height 15 cm.
51433a Pith Ball Assorted sizes, pack of 1 doz. |
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51434 Electrophorus
Polythene disc, 15 cm diameter in metal sole, brass disc 10 cm
diameter with insulted handle and small brass contact sphere. |
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51435 Electrophorous
Same as 51434 but polythene disc 10 cm diameter.
51436 Leyden Jar
With removeable internal and external coatings, 100 x 75 mm
maximum Height x Diameter. Inner metal coating in the form of
inverted cup to which a rod is fixed. |
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