But at the University of Oxford, they have an electric bell that has been ringing essentially non-stop on one set of batteries for about 178 years! Is the energy crisis solved then? Perhaps not.

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The Oxford Electric Bell, located in the Clarendon Laboratory at the University of Oxford, has been ringing nonstop for over ...

This led him to invent the microphone and later the "electrical speech machine" -- his name for the first telephone. Bell was born in Edinburgh, Scotland on March 3, 1847. He enrolled in the ...