Re: ALIENS ARE REAL, REVEALS FORMER ASTRONAUT
- From: oriel36 <kelleher.gerald@xxxxxxxxx>
- Date: Wed, 30 Jul 2008 21:42:25 -0700 (PDT)
Thank you Dwight for that hallucinogenic empirical explanation for the
variations in the natural noon cycle and the seasons .Maybe someday
the learning institutions will get serious about the motions of the
Earth and their effects but until then you may as well enjoy the
scripted fiction most here are addicted to -
http://www.youtube.com/watch?v=gUA35XQxxw8
On Jul 30, 10:27 pm, "dkel...@xxxxxxxxxxx" <dkel...@xxxxxxxxxxx>
wrote:
On Jul 30, 12:05 pm, oriel36 <kelleher.ger...@xxxxxxxxx> wrote:
---snip---
Knowing that you are an avid trekkie ,this is my favorite Star Trek
excerpt -
http://www.youtube.com/watch?v=gUA35XQxxw8
Even Crinklaw would crack a smile at that one !.
Hi
The Earth rotates, on its axis, relatively constantly with smal
variation over the year.
This is on the order of a few milliseconds. Some of the things
effecting this
are the molten core, tides and water retention. The Earth slows down
in its rotation, on its axis, over time because it transfers some
rotational
initial to the Moon and Sun through tidal drag.
The axis of the earth is tilted relative to the plane of the orbit
around
the sun. This creates the basic seasons.
This by itself would not create the shift seen in the local solar
noon.
The next biggest factor is that the Earths orbit around the Sun is not
circular but instead elliptical. This means that the Earths path
around
the Sun slows when approaching aphelion of the orbit. Since the Earth
is still turning at a relatively constant rate, and the tilt of the
earths
axis is almost aligned with the major axis of the orbit, the solar
noon
happens earlier than a time of the rate of rotation on its axis would
predict.
As the Earth moves closer to the perihelion, the orbital motion
increase,
causing the solar noon to happen latter.
Now, there is a secondary effect because the tilt of the Earth's axis
is
not perfectly aligned to the major axis of the elliptical orbit. This
causes
the slight notchs as seen in the graph of the "equation of time".
One other factor needs to be included and that is the fact the the
Earth
axis is precessing as well as is the orbits major axis. The Earth axis
is precessing about twice as fast as the orbits major axis in opposite
directions. This total effect is causing the difference between the
seasonal
year and the siderial year.
This is all there is to it. Why all the fuss. I believe that most
everyone
in this group understands this, even though they might not know the
fine
details. So, what exactly is your argument?
Dwight
.
- References:
- Re: ALIENS ARE REAL, REVEALS FORMER ASTRONAUT
- From: Chris.B
- Re: ALIENS ARE REAL, REVEALS FORMER ASTRONAUT
- From: AstroSketcher
- Re: ALIENS ARE REAL, REVEALS FORMER ASTRONAUT
- From: Greg Crinklaw
- Re: ALIENS ARE REAL, REVEALS FORMER ASTRONAUT
- From: M104galaxy@xxxxxxxxx
- Re: ALIENS ARE REAL, REVEALS FORMER ASTRONAUT
- From: Quadibloc
- Re: ALIENS ARE REAL, REVEALS FORMER ASTRONAUT
- From: Chris L Peterson
- Re: ALIENS ARE REAL, REVEALS FORMER ASTRONAUT
- From: oriel36
- Re: ALIENS ARE REAL, REVEALS FORMER ASTRONAUT
- From: Quadibloc
- Re: ALIENS ARE REAL, REVEALS FORMER ASTRONAUT
- From: oriel36
- Re: ALIENS ARE REAL, REVEALS FORMER ASTRONAUT
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- Re: ALIENS ARE REAL, REVEALS FORMER ASTRONAUT
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- Re: ALIENS ARE REAL, REVEALS FORMER ASTRONAUT
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- Re: ALIENS ARE REAL, REVEALS FORMER ASTRONAUT
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