Re: accruate "sundials"

To jTaylor

Yes,there is a natural asymmetry between one noon to the next hence the
necessity for the Equation of Time to equalise the natural unequal day
to the equable 24 hour clock day,again,the equable 24 hour day was
translated to independent axial rotation at 15 degrees per hour within
the Copernican heliocentric framework making 24hours/360 degrees for
that rotation in total.

Because the natural inequality from one noon to the next is a
consequence of two independent motions - axial rotation and orbital
motion acting in unison,those who present the sidereal value and the
astronomical justification for that value imagine that the Earth
actually rotates to the Sun every 24 hours,considering that orbital
motion as an independent motion is variable and axial rotation as an
independent motion is constant,no two rotations back to noon are the
same yet the sidereal value imagines it is.If you want to have your
intelligence insulted you can choose the convoluted NMM explanation or
the artistic Wikipedia explanation *,either way,both try to justify the
sidereal value astronomically when it cannot and never can be
justified.

Allowing that celestial cataloguing is a perfectly fine pursuit as long
as no pretense is made to accomplishing the astronomical method and
intents of the great astronomers who existed before Newton and his
empirical disciples mangled the insights.I have answered your questions
but as always,the highly intuitive discipline of astronomy requires
that ultimately the principles are self-learned as experiences rather
than cold facts.The intuitive aspects of astronomy reject insincerity
hence if you find the NNM justification (along with many others of the
same ilk) for axial rotation to be accurate then I suggest you take up
gardening or stampcollecting for it certainly will not be astronomy you
are practicising






* "Each solar day the Earth rotates 360º with respect to the Sun.
Similarly the Earth rotates 360º with respect to the background stars
in a sidereal day. During each solar day, the motion of the Earth
around the Sun means the Earth rotates 361º with respect to the
background stars."

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

The Wikipedia 'wrap around' explanation is hilarious -

"When one moves eastward 15° in longitude, sidereal time is larger by
one hour (note that it wraps around at 24 hours). "

http://en.wikipedia.org/wiki/Sidereal_time

.

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