article_snippet.sent: Martin Burgess Clock B is based on John Harrison's 18th century clock, which Martin Burgess Clock B thought up to solve the problem of determining longitude at sea.
article_snippet.sent: Clockmakers argued that a heavy pendulum bob and short swing would be the best.
article_snippet.sent: But Harrison dismissed this theory and thought a clock with a lighter pendulum bob and wide swing would work better.
article_snippet.sent: Harrison designed Harrison first clock in 1713 aged 20.
article_snippet.sent: Harrison 'longitude' clock, which was the basis of the Martin Burgess Clock B, would solve the problem of determining longitude at sea, Harrison claimed.
article_snippet.sent: Harrison was not taken seriously by any of Harrison contemporaries and the possibilities of Harrison clock were not explored until the 20th century.
highlights_snippet.sent: Martin Burgess Clock B is based on John Harrison's 18th century design .
  