🔭 Scientific instrument

Bain's electric clock

Reloj eléctrico de Bain

Date
1840-1841 · confidence high
Place
London, England, United Kingdom
Credited to
Alexander Bain
Field
Knowledge & symbols

What it is

A pendulum clock whose impulse is given by an electromagnet powered by a battery, instead of weights, and whose pendulum can synchronise other clocks by an electrical signal. It was patented in January 1841.

Bain partnered with the clockmaker John Barwise, and had a priority dispute with Charles Wheatstone, who had earlier proposed synchronised clocks. Bain's clocks were unreliable because of the batteries and the contact.

What it led to

  • networks of clocks synchronised by electrical signal in railways and cities
  • observatory master clocks (Synchronome)
  • electric wall and mains clocks
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Sources✓ verified 2026-11-06