Hans Christian Oersted was the first to proclaim ... A steady stream of inventions pushed radio forward. In 1907, American inventor Lee De Forest introduced his patented Audion signal detector ...
Michael Mosley, Cassie Newland and Mark Miodownik describe the scientific achievements of Hans Christian Oersted, William Cook and Charles Wheatstone. Prior to their inventions all communication ...
He built upon the work of Alessandro Volta who in 1800 invented the original battery and Hans Christian Oersted who in 1821 ... from the series The Genius of Invention. This clip would be ideally ...
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