Re: analemma



sounds like Bob Yen is off his medication again


"oriel36" <geraldkelleher@xxxxxxxxx> wrote in message
news:1166051135.707717.246760@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

OG wrote:
"oriel36" <geraldkelleher@xxxxxxxxx> wrote in message
news:1166049376.768458.300940@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
This is incorrect -

"Similarly, the tilt in the planet's axis of rotation relative to its
orbital plane is the reason why we experience seasons and explains why
the sun is observed to rise to higher declinations at noon in the
summer and much lower declinations during the winter. "

You are using the variations in the arc of the Sun as denoting
variations in axial tilt but this is an incorrect way to approach what
is occuring.

Idiot
Can't even read what's in front of him.

Anthony's hemispherical description of variations in solar altitudes
denoting variable axial tilt is about as poor as an interpretation as
it gets at least in respect to the cause of hemispherical weather
patterns (seasons).

http://www.liverpoolmuseums.org.uk/nof/sun/images/high_low_sun.gif

The Equation of Time is a global noon correction which has nothing to
do with the Sun's altitude nor its description as variable axial
tilt.The only idiots are those who propose that variations in
daylight/darkness asymmetry constitute a component in the astronomical
correction which equalises the variations in the Total length of a day
to the equable 24 hour day.

The analemma is a meaningless exercise based on photographing the
Sun using a 24 hour clock intervals and it has absolutely nothing to
do with the Equation of Time.It is a dumb 17th century attempt to
squeeze out the noon reference which correlates clocks with axial
rotation as a principle in order to pin axial rotation directly to the
Ra/Dec system and celestial sphere geometry.

Do you really want our parent star to do an annual hoola just for you,



.



Relevant Pages

  • Re: analemma
    ... the tilt in the planet's axis of rotation relative to its ... You are using the variations in the arc of the Sun as denoting ...
    (sci.astro.amateur)
  • Re: Sunrise and Sunset Calculation
    ... variations but rather that dynamic is found in orbital specifics.A ... 'tilt'  in respect to planetary comparisons and come to the same ... sun over the course of a year, which, of course, creates the seasons. ... Daily rotation causes the daylight/darkness cycle while orbital motion ...
    (sci.astro.amateur)
  • Re: Spam Free Alternatives to the Usenet Astronomy Groups
    ... and night would always be the same for any latitude and the sun would ... Uranus modifies the role of 'tilt' to influencing conditions between ... seasonal changes to occur from the orbital dynamic or the specific way ... rotation and the separate orbital turning to the Sun.Even if the ...
    (sci.astro.amateur)
  • Re: Spam Free Alternatives to the Usenet Astronomy Groups
    ... changes.The tendency is to overload daily rotation with both the day ... referencing 'tilt' to the central Sun. ... one revolution around the sun is minimal. ... Referencing 'axial tilt' to the central Sun as the dynamic and cause ...
    (sci.astro.amateur)
  • Re: Planets and Stars - an idea
    ... 20% - Distance (from Sun) ... everything that is perhaps correct into "Tilt", ... Without the 23:56 rotation, there would be no seasons; ... "Gur Zbba, orpnhfr vg tvirf yvtug va gur avtug-gvzr; ...
    (rec.arts.sf.science)

Loading