Re: Fair orbital question

On May 31, 1:16 am, calvin <cri...@xxxxxxxxxxxxxx> wrote:
On May 30, 3:25 pm, oriel36 <geraldkelle...@xxxxxxxxx> wrote:

As the Earth orbits the Sun,does a location keep the same face to the
Sun like a car travelling around a traffic circle or does it change
slowly through 360 degrees like a crankpin will to a central shaft ? -
...

If you are on an accurate 24 hour clock, and if your location is at
a multiple of 15 degrees longitude from Greenwich, and if you don't
change your clock for daylight time, then your location will face the
sun every day at noon, except that the sun's position will trace
an analemma on the sky over a period of one year, varying in
longitude according to the equation of time, and varying in latitude
according to the seasons.

There is no location on Earth where the sun is in the same position
every 24 hours, either in latitude or in longitude.

Thank you for that nice sub-geocentric response but the question
remains - in the absence of axial rotation,will a location keep the
same orbital face to the Sun or change it through 360 degrees and
take an entire orbit to do so .

http://space.newscientist.com/data/images/ns/cms/dn12529/dn12529-1_800.jpg

http://www.astro.psu.edu/users/niel/astro1/slideshows/class39/023-uranus-seasons.jpg

The variiations in the natural noon cycle are due to two motions -
axial rotation and the daily change in the planet's orbital
orientation to the Sun.Using noon as a benchmark,the difference
between constant axial rotation and the change in orbital orientation
( which follows Kepler's view on orbital geometry) explains both the
seasons and why the Equation of Time is needed to equalise the
variations in the length of the natural; day to the 24 hour day.

The Earth's axis and equator does not have a variable axial tilt to
the Sun,it has an orbital component which changes through an entire
360 degrees over a year,it is new and enjoyable and is fascinating
once it is recognised.

The analemma is 17th century sub-geocentric fiction or for those who
know no better or can't be helped.





.

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