In a hallway outside the Clarendon Library at the University of Oxford in England, a little electric bell has been ringing almost non-stop since 1840.
It certainly hasn’t been plugged in to the wall, so what’s the explanation for this long-running electrical marvel?
The device hasn’t been taken apart to be examined, but experts’ best guesses are that it is based on the work of Italian physicist and abbot Giuseppe Zamboni, who in the early 19th century developed a method of making high-voltage Volta piles, which functioned as early batteries.
A gorgeous example of one of Zamboni’s early devices is in the collection at SPARK Museum of Electrical Invention in Bellingham. It’s an extremely rare piece; there aren’t many like it anywhere in the world.
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