ultrafacts: The Oxford Electric Bell or Clarendon Dry Pile is an experimental electric bell that was set up in 1840 and which has run nearly continuously ever since. It was “one of the first pieces” purchased for a collection of apparatus by clergyman
ultrafacts: The Oxford Electric Bell or Clarendon Dry Pile is an experimental electric bell that was set up in 1840 and which has run nearly continuously ever since. It was “one of the first pieces” purchased for a collection of apparatus by clergyman