Comments on: Longitude Zero http://sgrajeev.com/longitude-zero/ Mostly Politics. Some Physics and Mathematics Sat, 19 May 2012 09:39:15 +0000 http://wordpress.org/?v=2.2.2 By: Prestashop Templates http://sgrajeev.com/longitude-zero/#comment-7085 Prestashop Templates Wed, 16 Nov 2011 04:48:18 +0000 http://sgrajeev.com/longitude-zero/#comment-7085 <strong>Websites You Should Visit...</strong> [...]very few websites that happen to be detailed below, from our point of view are undoubtedly well worth checking out[...]... Websites You Should Visit…

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]]> By: Viswa Sharma http://sgrajeev.com/longitude-zero/#comment-5015 Viswa Sharma Mon, 08 Dec 2008 19:38:55 +0000 http://sgrajeev.com/longitude-zero/#comment-5015 I see the comment "In addition to verses that can pass a scientific scrutiny, Aryabhata’s text also contains many fantastic passages that say things like: the Gods live at the Meru mountain (North Pole) and the demons at the South Pole. The Meru mountain at the North Pole is one yojana high (not sure sure how high that is) and it glows in the dark. Earth expands and shrinks by one yojana every yuga ( a very long Hindu unit of time). I thought it best to ignore these poetic fantasies. " Well one way to look at this is the Back bone - If you are familiar with Yoga this makes sense! because As above (skies) so below(body), Viswa I see the comment
“In addition to verses that can pass a scientific scrutiny, Aryabhata’s text also contains many fantastic passages that say things like: the Gods live at the Meru mountain (North Pole) and the demons at the South Pole. The Meru mountain at the North Pole is one yojana high (not sure sure how high that is) and it glows in the dark. Earth expands and shrinks by one yojana every yuga ( a very long Hindu unit of time). I thought it best to ignore these poetic fantasies. ”

Well one way to look at this is the Back bone - If you are familiar with Yoga this makes sense! because As above (skies) so below(body),
Viswa

]]> By: S. G. Rajeev http://sgrajeev.com/longitude-zero/#comment-1229 S. G. Rajeev Mon, 14 Jan 2008 16:35:49 +0000 http://sgrajeev.com/longitude-zero/#comment-1229 Jose, I would like to know also. What I could find out about it is in a related post http://www.sgrajeev.com/medieval-navigation As far as I can make out, it was some combination of dead reckoning and celestial navigation. If you can sight a fixed star and a planet within a short time (about ten minutes) you can get longitude. I suspect that some version of this is what they did, and corrected the estimate by their knowledge of the ships speed and currents. The trouble is that on a moving ship, it is hard to take sightings accurately. If you do find out more, please let me know. Jose,
I would like to know also. What I could find out about it is in a related post http://www.sgrajeev.com/medieval-navigation

As far as I can make out, it was some combination of dead reckoning and celestial navigation. If you can sight a fixed star and a planet within a short time (about ten minutes) you can get longitude. I suspect that some version of this is what they did, and corrected the estimate by their knowledge of the ships speed and currents. The trouble is that on a moving ship, it is hard to take sightings accurately.

If you do find out more, please let me know.

]]> By: jose goncalves http://sgrajeev.com/longitude-zero/#comment-1227 jose goncalves Mon, 14 Jan 2008 13:40:23 +0000 http://sgrajeev.com/longitude-zero/#comment-1227 I'm interested to know how the arabian sailors manage to determine the longitude before XVth century. Can anybody can help me? Thanks Pereira Goncalves eng_pg@hotmail.com I’m interested to know how the arabian sailors manage to
determine the longitude before XVth century.

Can anybody can help me?

Thanks

Pereira Goncalves
eng_pg@hotmail.com

]]> By: Rajeev’s Almanack » Blog Archive » Medieval Navigation in the Arabian Sea http://sgrajeev.com/longitude-zero/#comment-191 Rajeev’s Almanack » Blog Archive » Medieval Navigation in the Arabian Sea Fri, 10 Aug 2007 03:38:00 +0000 http://sgrajeev.com/longitude-zero/#comment-191 [...] Read First: Longitude Zero [...] […] Read First: Longitude Zero […]

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