May 19, 2012 - Did you get the original text-only version of 'Longitude' or the later illustrated version? If you got the former I advise you to also try and get hold of the latter - the illustrations add a great deal to the story.
The book is 'The Illustrated Longitude' by Dava Sobel & William J. Andrewes. ISBN 1-85702-714-0
May 19, 2012 - Very nice presentations. For a great read on John Harrison and the search for Longitude read Dava Sobel's "Longitude", The True Story of a Lone Genius Who Solved the Greatest Scientific Problem of His Time. I got it as a gift recently and was bowled over with this historical account.
May 19, 2012 - So, the bar construction of the pendulum bars uses the same brass/steel mix that late 19th century pocket watch balance wheels!
Video Details
With the aid of a replica clock this video shows the unusual features of the precision pendulum clocks built by John Harrison and his brother James between 1725 and 1730. More
With the aid of a replica clock this video shows the unusual features of the precision pendulum clocks built by John Harrison and his brother James between 1725 and 1730. Less
Youtube Comments (10)
g0mhc Says:
May 19, 2012 - A smashing insight into the craftsmanship of the Great John Harrison.
barry8472 Says:
May 19, 2012 - Great video. Its nice to see someone who apreciates the importance of these clocks
BobTascione Says:
May 19, 2012 - Good video with lots of good information. Thanks for putting it up here.
fosteragnes Says:
May 19, 2012 - Did you get the original text-only version of 'Longitude' or the later illustrated version? If you got the former I advise you to also try and get hold of the latter - the illustrations add a great deal to the story. The book is 'The Illustrated Longitude' by Dava Sobel & William J. Andrewes. ISBN 1-85702-714-0
imager05 Says:
May 19, 2012 - Very nice presentations. For a great read on John Harrison and the search for Longitude read Dava Sobel's "Longitude", The True Story of a Lone Genius Who Solved the Greatest Scientific Problem of His Time. I got it as a gift recently and was bowled over with this historical account.
tommygola Says:
May 19, 2012 - How amazingly clever..
Waltham1892 Says:
May 19, 2012 - amazing, a man clearly ahead of his time...
griffithstoby Says:
May 19, 2012 - harrison invented the gridiron pendulum
Axbent Says:
May 19, 2012 - Superb sequel!
Waltham1892 Says:
May 19, 2012 - So, the bar construction of the pendulum bars uses the same brass/steel mix that late 19th century pocket watch balance wheels!