🚀 go-pugleaf

On 11 Mar, 00:11, "daestrom" <daestrom@NO_SPAM_HEREtwcny.rr.com>
wrote:
> "oriel36" <kelleher.ger...@gmail.com> wrote in message
>
> news:c31d5f0f-2af0-439b-bc83-a25812ce1a1e@d62g2000hsf.googlegroups.com...
> On Mar 9, 3:27 pm, "Robert J. Kolker" <bobkol...@comcast.net> wrote:> oriel36 wrote:>
>
> <snip>
>
> >Most kids would like to know why we experience variations in daylight/
> >darkness throughout the year and the answer is not a variable tilting
> >Earth to the Sun,orbital plane or anything else.The cause of the
> >variation is in the Earth's orbital motion as a seperate component.
>
> Pity nobody here asked that question, nor stated anything contrary to it.
> If you can't follow the thread, I suggest you go back to the beginning of it
> and read the whole thing.
>
> Nobody here has been talking about the earth's axis shifting in relation to
> the orbit or any such nonsense.  Your reading comprehension skills are not
> as good as your 'jumping to conclusions' skills.
>
> daestrom

I do not draw conclusions,I work from known principles and
unfortunately you do not.As an example,take a look at this basic
staement -

> All you accomplish is to prove that the earth is rotating on its axis.

The correct working principles is that the Earth has a rotational
orientation due to axial rotation keeping the planet pointed in
roughly one direction inspace over the course of an annual orbit -

http://media.skyandtelescope.com/images/elaibj_circompolar2_wide_m.jpg

It is important to know the difference between axial tilt and
rotational orientation,the latter is the more accurate principle while
the former gets you into an awful lot of trouble.Copernicus used
variable axial/equatorial inclination to explain the seasons  -

 "the equator and the earth's axis must be understood  to have a
variable inclination. For if they stayed
  at a constant angle, and were affected exclusively by the motion of
the center, no inequality of days
  and nights would be observed " Copernicus ,De revolutionibus

The variations in daylight/darkness come as a result of four
components - axial rotation and orientation and orbital motion and
orientation,the four components can be seen in action via the
fortunate and unique properties of Uranus -

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

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


I will make it as easy as possible for you to understand what is going
on.When orbital motion is isolated,a location will not remain fixed to
the Sun over the course of an annual orbit,a location will turn
through 360 degrees with respect to the central Sun ,this motion
strictly a property of the orbital motion of a planet -

http://asymptotia.com/wp-images/2007/08/uranus_rings.jpg

To give dynamicists a chance,all bets are off in the matter of
'gravitational theories' going all the way back to the one that became
dominant in the late 17th century.On the positive side,it becomes
possible to disengage axial rotation from orbital motion and treat
orbital motion as a seperate motion rather than tying it to the awful
Ra/Dec system created by Flamsteed in referencing all celestial
motions off an equidistant celestial sphere framework.

The real positive of the new orbital component is that it explains
where variations in the natural noon cycles come from as an
affirmation of Kepler's orbital geometry,as you can see from those
sequence of images,it is the first time Kepler's orbits can be
confirmed observationally as a direct perception rather than a
hypothesis.I am absolutely astonished that such a clear and observed
observation of a new motion,as a location chasnges it orientation with
respect to the Sun,is left to drift but such is this era.