alleryThe first commercial electrical telegraph was demonstrated in 1837 by Cooke and whom?
AWheatstone
BEdison
CBaird
DFarnsworth
Answer & Solution
Correct answer: A. Wheatstone
1. On July 25, 1837, the first commercial electrical telegraph was demonstrated.
2. The demonstrators were Sir William Fothergill Cooke and Sir Charles Wheatstone.
3. Baird and Farnsworth worked on television.
_Source: Wikipedia, Telecommunications, Telegraph and telephone_
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