Image: Bain-clock

Description: Precision regulator clock with electromagnetically-driven pendulum, by Alexander Bain, London, around 1845 (Deutsches Uhrenmuseum [German clock museum], Inventory No. 2004-162). One of the first electric clocks ever built. The pendulum was kept swinging by pulses of magnetic force from an electromagnet (solenoid) (visible, bottom) near the bob, powered by a battery, and controlled by switch contacts (visible, center) on the pendulum rod.
Title: Bain-clock
Credit: Deutsches Uhrenmuseum
Author: Museumsfoto
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Usage Terms: Creative Commons Attribution 3.0 de
License: CC BY 3.0 de
License Link: https://creativecommons.org/licenses/by/3.0/de/deed.en
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