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Leyden jar with movable coatings, conical

Small induction coil, 3 cm spark

Reflection apparatus, fall machine

Air pump plate with manometer and receiver

Apparatus to determine the proportion of heat energy to the total energy of an incandescent lamp

Glass sphere with liquid for centrifugal machine

Voltmeter

Model of a telephone

Pyrheliometer according to Pouillet for determining the terrestrial radiation of solar heat taken up by the earth

Weinhold's apparatus for demonstrating the effect of rotary field