false http://photo.goodreads.com/books/1171806347m/119754.jpg 119754 3 <P><B><P>"For hundreds of years ships had been sailing to places far and near <I>without really knowing where they were!"</I></B><P>Sailors knew how to measure latitude, their location north or south of the equator, but they could not measure longitude, their location east or west of their home port. Because of this, many lives were lost worldwide. The key to solving this problem lay in devising a clock that could keep absolutely accurate time while at sea, unaltered by rough water or weather conditions. With such a timekeeper sailors would be able to know the time back at their home port and calculate the longitude. But no one knew how to design such a clock.<P>John Harrison (1693-1776), an Englishman without any scientific training, worked tirelessly for more than forty years to create a perfect clock. The solution to this problem was so important that an award of 20,000 pounds sterling (equal to several million dollars today) was established by the English Parliament in 1714. Harrison won recognition for his work in 1773. <P>Together with beautifully detailed pictures by Erik Blegvad, Louise Borden's text takes the reader through the drama, disappointments, and successes that filled Harrison's quest to invent the perfect sea clock.<P> 2787529 10 2 2004 Sea Clocks: The Story of Longitude total:9|5:2|4:4|3:3|2:0|1:0| 9 35 13 3 5 0 false false Mon Jan 01 00:00:00 -0800 2007 Mon Oct 26 17:57:34 -0700 2009 Mon Oct 26 17:59:13 -0700 2009 3 4 0 false false Sun Jul 26 00:00:00 -0700 2009 Wed Jul 29 12:19:37 -0700 2009 Wed Jul 29 12:21:10 -0700 2009 4 0 false false Tue Jan 29 13:17:29 -0800 2008 Tue Jan 29 13:49:18 -0800 2008
It was a Yorkshire carpenter who made the first clocks accurate enough to determine Longitude at sea.

Determining Latitude is easy.

Determining Longitude is far from easy.]]> 3 0 false false Sat Jan 03 08:19:34 -0800 2009 Sat Jan 03 08:19:48 -0800 2009 4 0 false false Tue Sep 02 11:08:07 -0700 2008 Tue Sep 02 11:08:07 -0700 2008 3 0 false false Tue Sep 02 11:06:15 -0700 2008 Tue Sep 02 11:06:15 -0700 2008 0 0 false false Wed Aug 20 22:35:16 -0700 2008 Wed Aug 20 22:35:16 -0700 2008 0 0 false false Sat Jun 21 10:52:05 -0700 2008 Sat Jun 21 10:52:05 -0700 2008 3 0 false false Tue May 27 11:39:27 -0700 2008 Tue May 27 11:39:27 -0700 2008 0 0 false false Mon Apr 28 00:13:10 -0700 2008 Mon Apr 28 00:13:13 -0700 2008 4 0 false false Wed Mar 26 17:42:11 -0700 2008 Wed Mar 26 17:42:11 -0700 2008 0 0 false false Sun Mar 23 19:35:30 -0700 2008 Sun Mar 23 19:35:30 -0700 2008 5 0 false false Wed Jan 30 14:15:41 -0800 2008 Wed Jan 30 14:15:41 -0800 2008 http://www.goodreads.com/book_link/follow/8?book_id=119754