Re: Two dumb questions





Jonathan Silverlight wrote:
> In message <1121274327.937225.224570@xxxxxxxxxxxxxxxxxxxxxxxxxxxx>,

> The seasons are mainly due to the axis of a planet being inclined to its
> orbit, so the day/night ratio changes as the planet goes round the Sun.


Scientists,in describing the cause of seasonal change,are focusing on
the wrong orientation for common sense dictates that the axial tilt is
fixed as does not change -

http://homepage.mac.com/tarashnat/astrophoto/images/0001-08a.jpeg

Assuming people would actually like to know what causes seasonal
changes from a global rather than a hemispherical perspective,the
answer lies in the changing orbital orientation to the Sun.

Equatorial orientation or hemispherical variations in the Sun's
altitude is a chronic symptom of that awful maneuvering by 18tyh
century cataloguers.

At other times you could all sit back and pretend not to see but it
really,really does not take much to see how orbital motion and
orientation changes against a fixed axial orientation.If you are so
dumb that you imagine a non existent axial tilt component to the
orbital plane as an explantion for seasonal changes then be my guest
because although the variation is orbital orientation is initially
tricky to become famaliar with it becomes an easy and comfortable
explanation after a while.

Your empirical explanation,otoh,sticks out like a sore thumb.

.



Relevant Pages

  • Re: Earth rotation
    ... > defined as the sun crossing the meridian, then the only possible variable is ... >> an indicator for equatorial orientation to the Sun. ... property of axial rotation is always tangential to axial orientation. ... >> Earth's ORBITAL orientation changes over the course of an annual ...
    (sci.astro)
  • Re: Earth rotation
    ... > the false contention that constant axial rotation through 360 degrees ... defined as the sun crossing the meridian, then the only possible variable is ... - this shows nothing about orientation throughout the annual orbit as it ... > Earth's ORBITAL orientation changes over the course of an annual ...
    (sci.astro)
  • Re: Stories that made you cry
    ... >> was bad luck, ... >> was any such linkage in the orientation the stowaway got. ... > vital medicine to a plague-ravaged wild planet might be even a tiny bit ... > I am assuming that being hit by a tornado is bad luck. ...
    (rec.arts.sf.written)
  • Re: Two dumb questions
    ... >>change is due to the orbital orientation of the Earth changing through ... >>axial motion and orientation and treated orbital motion as an ... >>Listen carefully,the Sun does not bob up and down against the equator ... > combination of axial tilt and an elliptical orbit. ...
    (sci.astro)
  • Re: Doomsday Dec 21 2012
    ... represents a new orbital component even when the images are in front ... The rotational orientation of Uranus keeps the planet pointing in one ...
    (sci.astro.amateur)