On Oct 25, 3:01*pm, "Rodney Pont"
wrote:
On Sat, 25 Oct 2008 00:55:40 -0700 (PDT), ukastronomy wrote:

A bit of what you quoted from oriel36:

The global perspective ignores hemispherical
concerns by dropping axial inclination as the dynamic for seasonal
variation and puts the dynamical cause in the Earth's orbital motion

If orbital motion caused the seasons wouldn't it be winter in both
hemispheres at the same time? The earths tilt is the only explanation
for the seasons alternating in the northern and southern hemispheres.


What is the problem with considering the specifics of orbital motion
in the absence of daily rotation ?

If any given location on the planet will experience a single cycle of
daylight/darkness over the course of an annual orbital cycle,this 360
degree change has to be considered with the 360 degree daily
rotation with respect to the central Sun in generating both the
variations in the natural noon cycles and seasonal variations in
daylight/darkness.

There are two 360 degree motions intrinsic to the planet itself with
the orbital change in orientation of any given location directly
observed -

http://hubblesite.org/newscenter/arc...999/11/video/b

Is there something so fundamentally repugnant in that overlooked
orbital component that has people blurting out 'axial tilt' which is
only rotational orientation and does not cause the seasonal
variations ?.The specific way a planet orbits the Sun is fascinating
and whether you know it or not,this new component is a rather large
modification to planetary dynamics.






--
Regards - Rodney Pont
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