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This product uses TMDB and the TMDB APIs but is not endorsed, certified, or otherwise approved by TMDB.
Adam Hart-Davis searches for unsung heroes of science on a trip to the Potteries, Staffordshire. Using a few pipes, a ribbon and an air pump, he demonstrates the early ideas for a voice synthesiser that were developed by Erasmus Darwin. Charles Darwin's grandfather. Other subjects include John "Iron Mad" Wilkinson, who perfected the aim of the cannon.
