Re: Fair orbital question


"bz" <bz+sp@xxxxxxxxxxxxxxxxxxxx> wrote in message
news:Xns9AB95C3E0531CWQAHBGMXSZHVspammote@xxxxxxxxxxxxxxxxx
A friend of mine grew up on the equator in South America
She was quite shocked by the seasons when she moved to the US.
She said that on a rainy day in Colombia they said 'it is winter today'.
On a sunny day 'it is summer today'. They have no seasons because their
days do not vary very much in length.

Without the tilt of the earths axis there would be almost no 'seasonal
variation' because the earths orbital eccentricity is very small.

The point of closest approach to the sun is mid winter for the norther
hemisphere. That would be our summer if there was no tilt.

bz,
We know the tilt is the basic cause for
the shift in seasons from north to south,
but it is not the cause of the seasonal changes themselves.
such as why it will be colder and why it would be hotter
for anywhere at all.
The orbit alone is a cause but of course would not
be so much a change as now.
but the tilt is not the cause itself, it is only a secondary cause
of the swapping of seasons only.

--
James M Driscoll Jr
Spaceman


Look at that video again. It starts with the north pole in darkness, 24
hours a day. That tends to make things cold.

Again, you are not thinking about the actual cause for
the changes at all.
(not the shifting of north to south seasonal stuff)
The shifting of the seasons "at all" being one 360 degree motion.
without the tilt and just the eliptical path we know for Earth.


If the variation in lighting isn't the cause of the seasons, what is?

that is just it.
Tha variation in light occurs without the tilt,
The seasons are actually caused by orbit alone
and the tilt is the cause of shifting them and making them
higher variations in hotter or colder
The variations would be there without the tilt.
they would just be evened out among the planet better
instead.
think about it anyway.
:)



If the variation in lighting isn't the direct result of the tilt of the
earths axis, what is?

Just the orbit alone, (distance changes and time changes of
heating and cooling time.)
Try it if you can on a 3D program if you can.

--
James M Driscoll Jr
Spaceman


please pardon my infinite ignorance, the set-of-things-I-do-not-know is an
infinite set.

Me too, that dang knowledge thing, it seems to never end in some people.
:)


.

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