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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

Ammeter

Voltmeter

Optical disc according to Hartl

Device to create central packages of light rays

Variac potentiometer

Spectrometer with flint-glass prism

Polarimeter, polarisation apparatus according to Lippich

Special shunt