Whether you treat the earth as moving around the sun, or vice versa, it's just a change of coordinate system.As frequently done in physics, sometimes a change of coordinates makes an equation easier, or makes visualization easier. Remember changing from cartesian to polar to simplify some problems?No right or wrong, since earth and sun are both moving.RonWild CheriC&C 30STL
--- On Mon, 1/28/13, dwight veinot <dwightvei...@hfx.eastlink.ca> wrote: From: dwight veinot <dwightvei...@hfx.eastlink.ca> Subject: Re: Stus-List Sextant To: cnc-list@cnc-list.com Date: Monday, January 28, 2013, 9:40 AM Popular convention versus what’s correct…I understand a little about the math: just been too cold here lately and I’ve been inside way tooo much I always figured a score of 0% was equal to a score of 100% on multiple choice questions…it takes just as much knowledge to get them all wrong…I could never do it but no one knew I was trying…so sometimes my scores suffered Dwight Veinot C&C 35 MKII, Alianna Head of St. Margaret's Bay, NS From: CnC-List [mailto:cnc-list-boun...@cnc-list.com] On Behalf Of Della Barba, Joe Sent: January 28, 2013 11:04 AM To: cnc-list@cnc-list.com Subject: Re: Stus-List Sextant I don’t think so – but the sextant was far from the first celestial navigation tool. In real life electricity flows from – to + in copper wire, but we all work with the idea it goes + to – with no issues. The math is the same whichever body is actually moving for sun sights. Joe Della Barba From: CnC-List [mailto:cnc-list-boun...@cnc-list.com] On Behalf Of dwight veinot Sent: Monday, January 28, 2013 10:01 AM To: cnc-list@cnc-list.com Subject: Re: Stus-List Sextant Was the sextant invented before we knew the difference? Dwight Veinot C&C 35 MKII, Alianna Head of St. Margaret's Bay, NS From: CnC-List [mailto:cnc-list-boun...@cnc-list.com] On Behalf Of Frederick G Street Sent: January 28, 2013 10:45 AM To: cnc-list@cnc-list.com Subject: Re: Stus-List Sextant Yes, that's common knowledge; but the process of doing celestial navigation actually presumes that the earth (or your location on it) is fixed, and the sun is doing the moving. Here's one of the more concise books on the topic: http://www.amazon.com/Celestial-Navigation-Yachtsmen-Mary-Blewitt/dp/0070059284 Fred Street -- Minneapolis S/V Oceanis (1979 C&C Landfall 38) -- on the hard in Bayfield , WI :^( On Jan 28, 2013, at 6:01 AM, dwight veinot <dwightvei...@hfx.eastlink.ca> wrote: Is it not common knowledge that the sun essentially remains fixed for all intents and purposes and the earth does the moving? No virus found in this message. Checked by AVG - www.avg.com Version: 2012.0.2221 / Virus Database: 2639/5563 - Release Date: 01/28/13 No virus found in this message. Checked by AVG - www.avg.com Version: 2012.0.2221 / Virus Database: 2639/5563 - Release Date: 01/28/13 -----Inline Attachment Follows----- _______________________________________________ This List is provided by the C&C Photo Album http://www.cncphotoalbum.com CnC-List@cnc-list.com
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