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  1. #1
    berk's Avatar
    berk Guest

    Default The Equinox 2009





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


    berk


  2. #2
    Sam Wormley's Avatar
    Sam Wormley Guest

    Default 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. #3
    skyguy's Avatar
    skyguy Guest

    Default 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. #4
    Sam Wormley's Avatar
    Sam Wormley Guest

    Default The Equinox 2009

    oriel36 wrote:

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

  5. #5
    Sam Wormley's Avatar
    Sam Wormley Guest

    Default The Equinox 2009

    skyguy wrote:

    <smiling>



  6. #6
    berk's Avatar
    berk Guest

    Default 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. #7
    Sam Wormley's Avatar
    Sam Wormley Guest

    Default 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. #8
    Sam Wormley's Avatar
    Sam Wormley Guest

    Default 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. #9
    Sam Wormley's Avatar
    Sam Wormley Guest

    Default 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. #10
    Sam Wormley's Avatar
    Sam Wormley Guest

    Default The Equinox 2009

    oriel36 wrote:




 

 
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