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Text File  |  1992-09-01  |  332b  |  9 lines
  1. Wheatstone, Charles 1802-1875. English
  2. physicist and inventor. With William Cooke,
  3. he patented a railway telegraph in 1837, and,
  4. developing an idea of Samuel Christie,
  5. devised the Wheatstone bridge, an electrical
  6. network for measuring resistance. Originally
  7. a musical-instrument maker, he invented the
  8. harmonica and the concertina.
  9.