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Mirror galvanometer

telegraphen-bauanstalt von siemens & halske (1847 –)

Siemens & Halske: Pioneers of electrical engineering! From telegraphs to light bulbs, this German firm shaped modern technology in the 19th century.

NEMO Science Museum (Amsterdam, Holandija)

Forma obložena bakrom, koju je dizajnirao Renzo Piano

This astatical mirror galvanometer measures current strength. The operating principle behind a mirror galvanometer is that a small mirror is rotated in proportion to the strength of the interaction between permanent magnets and coils through which the current to be measured flows. The astatical version is not affected by outside influences, such as the Earth

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