Schwarzwald - Tafelstandaard - Hout
Nr. 36813825
Spoel van Ruhmkorff (3) - Hout, Koper, Messing - Begin 20e eeuw
Nr. 36813825
Spoel van Ruhmkorff (3) - Hout, Koper, Messing - Begin 20e eeuw
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.
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