The Modern Antiquarian Forum » Stonehenge Y&Z holes evidence of farming calendar |
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Monganaut 2382 posts |
Dec 01, 2014, 05:02
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And don't forget to put a visitors center 30 centimeters away. I've got a built it yourself stonehenge somewhere that was a stocking filler...'bout 2" high, not that accurate to look at, but all the larger trilithon pieces are there. There's even a green card base with the bluestones printed on, and numbers where to place the 'stones'. Get one here if that's your thang... http://www.amazon.co.uk/Build-Your-Stonehenge-Running-Press/dp/076242883X/ref=sr_1_1?ie=UTF8&qid=1417408299&sr=8-1&keywords=Model+Stonehenge
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Sanctuary 4670 posts |
Dec 01, 2014, 08:58
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Monganaut wrote: And don't forget to put a visitors center 30 centimeters away. I've got a built it yourself stonehenge somewhere that was a stocking filler...'bout 2" high, not that accurate to look at, but all the larger trilithon pieces are there. There's even a green card base with the bluestones printed on, and numbers where to place the 'stones'. Get one here if that's your thang... http://www.amazon.co.uk/Build-Your-Stonehenge-Running-Press/dp/076242883X/ref=sr_1_1?ie=UTF8&qid=1417408299&sr=8-1&keywords=Model+Stonehenge Free entry as well...too good to miss. PS...could be useful for ten pin + bowling practise as well :-)
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Dave1982 83 posts |
Dec 03, 2014, 21:16
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tiompan wrote: Dave , the declination of the sunrise at the winter solstice sunrise around 2500 bc is - 24 and summer solstice sunrise is +24 . It is when the combination of latitude , altitude, azimuth of the event , combine to produce via the formula for declination ,a declination of +or 24 we know that we have a alignment that would would work for the solstice of the period . Today , because of the change in obliquity the declination would be closer to + or - 23 .5 . Ummm, yeah, I have to admit I'm a bit lost here. What units are the 24s in? And what are they + and - to ? Sorry about my ignorance. I've surfed for the declination (angle) of path of the rising sun to the azimuth (far horizon) but have found nothing. I wonder if the curve of the rising sun has ever been calculated ? This is well in advance of my education and I may have to drop this, and just make an intelligent guess by checking the horizon via Streetview. Not very scientific I know : ) but if this theory ever attracts serious attention I'll leave it to the serious academics to do a rigorous examination ! (such as yourself perhaps?) : ) Dave1982
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tiompan 5758 posts |
Dec 03, 2014, 22:40
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Sorry Dave I should have mentioned that declination is measured in degrees . This is the wiki page http://en.wikipedia.org/wiki/Declination . Nothing wrong with street view if the site is close to the road but if it isn’t then it is a bit more long winded , the site I linked to could help a lot with speeding up the process of the calc . Not sure what you meant by “curve” , angle of rise perhaps ? If so yes . It varies depending on latitude i.e. in the Yemen the sun rises and sets much more steeply than here in the UK at the equator it’s straight up and down
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Dave1982 83 posts |
Dec 04, 2014, 21:27
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Hi tiompan Thanks, I shall study that. By curve I mean the angle of the rising sun to the azimuth (far horizon) I didn't know about the changing angle with latitude - very interesting. I know nothing about astronomy as I expect you now know ! : ) Dave1982
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tiompan 5758 posts |
Dec 04, 2014, 22:57
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Dave1982 wrote: Hi tiompan Thanks, I shall study that. By curve I mean the angle of the rising sun to the azimuth (far horizon) I didn't know about the changing angle with latitude - very interesting. I know nothing about astronomy as I expect you now know ! : ) Dave1982 Sorry Dave , I don't follow . If the point on the horizon measured from the observer is the azimuth I don't see what the angle could be ,other than that of the angle of rise itself .
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