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Stonehenge Y&Z holes evidence of farming calendar
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tiompan
tiompan
5758 posts

Re: Stonehenge Y&Z holes evidence of farming calendar
Nov 30, 2014, 16:03
Dave ,
No need to leave the forum . Please keep discussing .
The most important point about calculating sun or rise events on the horizon at a particular date i.e. solstices , is declination . This involves latitude , the altitiude of the horizon , bearing of the event and if felt necessary for extreme accuracy ,refraction . It's all formulaic . A good introduction to the various formulae is Alexander Thom's "Megalithic Sites in Britain " .As an example the formula for the alt for an observer C to horizon point D is h = H/c-c(1-2k)/2R ,where H = height of D above C c= distance froof D from C R=radius of curvature of the spheroid , k= coefficient of refraction . You don't have to have any knowledge or ability in math when working with formulae and it soon becomes second nature .

Even if Blakeley Raise is not a genuine monument the more such controls are looked at the better .They are usually omitted in a rush towards confirmation bias .It was a partcularly good example of the problems with the horizon , that's why I mentioned it . The problem often goes unnoticed in monuments that are surrounded by relatively flat or horizons of similar height .
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Re: Stonehenge Y&Z holes evidence of farming calendar (tiompan)
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