Re: Starmapping software


OG wrote:

"oriel36" <geraldkelleher@xxxxxxxxx> wrote in message
news:1159809785.851218.96500@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx


Let me show you what you believe through Flamsteed's justification of
the return of a star to a meridian -

http://www.nmm.ac.uk/server/show/nav.00500300l005001000

In your mind a shadow returns to noon in 24 hours exactly

What does 'a shadow returning to noon' mean? . Noon is a time, A shadow is a
moving line on the ground. You have confused yourself once again.




In your mind a shadow returns to noon in 24 hours exactly

Does the NMM definition of the 24 hour solar day include the word 'exactly'
in reference to the passage of the sun across the sky? No, I didn't think so
either.

In your mind a shadow returns to noon in 24 hours exactly in order to
justify the reurn of a star in 23 hours 56 minutes 04 seconds.

The sidereal day is exact. There is no need to posit an exactness to the
solar day to determine the exactness of the sidereal day.

I can no longer compete with such rubbish as the NMM explanation above
when the actual principles which correlate clocks with axial rotation
through the noon Equation of Time correction at precisely 4 minutes for
each degree of rotation are so gorgeous that I have trouble imagining
why anyone would intentionally destroy it

It does not 'destroy' it to point out that it is dependent on a fudge
factor, a correction. You know what a "correction" is? it is something
needed to make something else correct!

<snippage>

The two step process which correlates axial rotation with the clocks
in 24 hours/360 degrees precisely is now open for anyone who cares to
explain it as a shared astronomical heritage which is gorgeous and
pragmatic.

Yes (apart from not being exact) it is indeed gorgeous; but it is
emphatically not exclusive of other more exact and useful means of
expressing the relationship between heavens and earth.

The correlation between axial rotation and the clock value is and
always will be 4 minutes for each degree of rotation precisely making
24 hours/360 degrees in total.There is no burden attached to
appreciating the two step process which refers the pre-Copernican
Eqiuation of Time principles to its pragmatic heliocentric adaption to
axial rotation,it simply is for people who have genuine intellectual
and intuitive intelligence and I am prepared to leave it at that.

How long you can keep the belief that the Earth's axial and orbital
motions can be justified using the return of a star in 23 hours 56
minutes 04 sec is not for me to say.It is a huge mistake that is not
easy to conceal but then again I have come around to being positive and
can confidently say that people will really enjoy the two step process
of the Equation of Time system to care that 17th century celestial
sphere cataloguers got it wrong.

So,join the rest of humanity and celebrate that the pace of a hand of
clock you see on the wall is keeping in sync with the great cycle of
axial rotation at 15 degrees per hour precisely, the way the system
was developed makes it is a geometric certainty and one of the greatest
human inventive achievements of all.

.

Relevant Pages

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