1. ## The Equinox 2009

I encourage this level of rationality as demonstrated in this post.

berk

2. ## The Equinox 2009

oriel36 wrote:

Gerald, science is a method for gaining knowledge about how nature
works. We know from direct observation and measurement, that the
earth's axial tilt with respect to the ecliptic is the dominant
cause of seasonal variations. Orbital distance, which varies by
less than two percent is a very minor contributor to seasonal
variation on earth.

3. ## The Equinox 2009

Sam Wormley wrote:

The irony is he's right when he says "the seasons are generated strictly
by the orbital motion of the Earth and the specifics of that orbital
motion" but he doesn't understand why.
If I had a time machine the first thing I'd do (actually the second
thing after stopping on the morning of March 14, 1986 to buy a thousand
shares of Microsoft) would be to meet young Gerald at the age of ten and
give him a shiny new toy gyroscope. I'd tell him to first start it
spinning and then hold it lightly between his thumb and forefinger at
the two opposite points on the frame where the equatorial ring
intersects the polar ring. Next with the rotational axis inclined (yea
tilted!) at an angle of about 23-degrees to the floor, he would slowly
walk in a circle around some object in the room while observing the
behavior of the rotational axis. Finally I would walk around the circle
with the gyroscope while Gerald stands in the center. This time I ask
him to watch both the rotational axis and particularly the equatorial
ring as seen from his central vantage point. Just to be sure he really
got it, I would repeat all of the exercise except step one. The
gyroscope would -not- be spinning.
A simple demonstration which might have spared us from going through all
of this, every three months, ad nauseam. Yes, I know the 'rational'
alternative but that's too easy.

4. ## The Equinox 2009

oriel36 wrote:

Will you be offering a lamb or other hot blooded animal
as a sacrifice this autumnal equinox, Gerald?

5. ## The Equinox 2009

skyguy wrote:

<smiling>

6. ## The Equinox 2009

On Sep 19, 6:51 am, Sam Wormley <sworml...@mchsi.com> wrote:

Har.

but, but, but- the Earth can't be Tilted! I'm standing on it now and I
don't feel any tilt at all!

See, the Sun is made of Hot gases and this heat causes it to rise and
then once it's expended this heat it cools and this causes it to sink
again.

That explains everything. <owww>

berk
tongue in cheek and bitten

7. ## The Equinox 2009

oriel36 wrote:

It matters not if the earth's orbit has eccentricity of 0 (perfectly
circular) or its actual value of 0.0167 (slight ellipse). As the earth
orbits the sun, and because the earth's axis of rotation is tilted, we,
away from the equator, experience seasonal changes in our weather, as
the angle of incidence of the sunlight is changing seasonally.

Why do you have a problem with this Gerald? It's just a simple physical
phenomenon.

Uranus is confusing you!

8. ## The Equinox 2009

berk wrote:

Furthermore, the sun is no bigger than a quarter. Any fool can see
that holding one beside the other.

;-)

9. ## The Equinox 2009

oriel36 wrote:

Oh dear--and here we thought you were harmless, Gerald. But to be
influencing "students"--You go too far!

10. ## The Equinox 2009

oriel36 wrote:

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