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Old 06-02-2014, 12:21 AM
Martin Timothy Martin Timothy is offline
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Join Date: May 2011
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Default John Harrison's 1730 Marine Clock - The Powder of Sympathy



http://www.rmg.co.uk/explore/astrono...facts/harrison

Quote:
John Harrison's 1730 Marine Chronometer for determining Longitude - Hitherto the Powder of Sympathy / Dog method was in use, PoS heals at a distance despite momentary pain, thus an injured dog was put on a ship, when its bandage was dipped into the powder at noon in London each day the dog aboard ship yelped.

http://double-barrelledtravel.com/ti...ich-mean-time/


Last edited by Martin Timothy : 06-02-2014 at 12:37 AM.
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