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玩偶 - "Mondo del bizzarro" - 74 cm - 木 - 約1920年
編號 36813825
編號 36813825
Devices used in physics laboratories for electrical current experiments. They are induction coils (also known as the Ruhmkorff coil) which, starting from a low-voltage direct current source, produce high voltage pulses. The devices are three of which the oldest, probably from the late 1800s, is a real collector's item. The dimensions shown refer to this piece.