On Monday, August 11, 2014 3:27:29 PM UTC+1, Bill wrote:
On Mon, 11 Aug 2014 02:25:17 -0700 (PDT), oriel36 wrote:



There is a wonderful astronomical symphony attached to the daily arcs of the Sun as our location arcs upwards from sunrise and reaches noon and then arcs downward hence we see this effect of a round an rotating Earth daily. The seasonal variations in that arc are due to an additional surface rotation to the central Sun which changes the length of time the Sun arcs from horizon to horizon and more interestingly the variations in height as a consequence of the orbital component of surface rotation. It is,of course, a new area of astronomy to visit with visual narratives even with a cult out there who insist in bypassing the daily arcs of the Sun by being fixated on circumpolar motion of the distant stars.



There is no further need to revisit the hideous idea of the Sun following a circumpolar arc even if it is proposed as 'fact' to a society that has yet to engage with genuine astronomy through contemporary tools which include magnification but are not solely reliant on that facet of astronomy.



There is a wonderful sense of freedom for those who are not disposed to distorting observations to suit a celestial sphere agenda whether they call it universal gravity,relativity or some other variation on those hapless themes. There is,however,a second chance for those who straighten out all the references which lead to explanations of cause and effect,solar system structure and so on in an atmosphere of cooperation and genuine healthy competition.



This is all good and a sign that the stagnation which caused the life to go out of astronomy is now setting the groundwork for a return to a vibrant and productive state.



.

How it is that anyone (astronomer - by any definition, or any

layperson) can logically assert that the Sun's apparent motion (on short

time scales): is circumpolar; and say it with a clear conscience, is

something you'll either figure out for yourself - or you won't.

The daily arc of the Sun from horizon to horizon does not follow a circumpolar arc insofar as the daily arc is in the opposite direction to circumpolar motion looking South towards the Equator and variations in that arc from greater to smaller as the Earth moves from its June to December orbital position is matched in the Southern hemisphere by an opposite apparent movement in the same arc from smaller to greater and in the opposite arc to the Southern circumpolar stars.

It is not a clear conscience as that assumes intelligence of some standard, what you are prepared to believes defies description as this is the apparent daily motion of the Sun and its seasonal variations that is being challenged because the Sun follows no circumpolar arc from horizon to horizon -

http://usatoday30.usatoday.com/news/...ole-sunset.htm

The only acceptable variations in the arc of the Sun from horizon to horizon are the normal seasonal arcs with greater arcs away from the Equator as the season progresses towards hemispherical summer -

http://www.astronomy.org/programs/se...ing-sun-sm.gif


With 3 centuries of empirical voodoo creating an interpretative atrophy in our race it is no wonder that not even the apparent motion of the Sun survives as an observation.