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Kelleher's nightmare
This is a sundial in Wellington, New Zealand. it's accurate without the equation of time because it's based on the local analemma. It's even corrected for daylight savings time because the signs on the hour markers are changed twice per year. https://1drv.ms/a/s!AgO9GWAqYeF_gzNi1bxJfZODS7oD |
#2
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Kelleher's nightmare
On Thursday, March 2, 2017 at 7:24:29 AM UTC-8, Mike Collins wrote:
This is a sundial in Wellington, New Zealand. it's accurate without the equation of time because it's based on the local analemma. It's even corrected for daylight savings time because the signs on the hour markers are changed twice per year. https://1drv.ms/a/s!AgO9GWAqYeF_gzNi1bxJfZODS7oD The reason for the variations in the natural noon cycle are contained in the EPIC time lapse footage - https://www.youtube.com/watch?v=CFrP6QfbC2g&t=43s In a little over two weeks the South Pole will turn through the circle of illumination and the Equinox event where the Sun goes absent from view for the next 6 months. The single surface rotation as a function of the Earth's forward motion through space and around the Sun responds to the unequal speed of the planet hence the natural variations where it combines with intrinsic daily rotation. The North and South poles turn parallel with the orbital plane as do all points on the Earth's surface. |
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Kelleher's nightmare
Gerald Kelleher wrote:
On Thursday, March 2, 2017 at 7:24:29 AM UTC-8, Mike Collins wrote: This is a sundial in Wellington, New Zealand. it's accurate without the equation of time because it's based on the local analemma. It's even corrected for daylight savings time because the signs on the hour markers are changed twice per year. https://1drv.ms/a/s!AgO9GWAqYeF_gzNi1bxJfZODS7oD The reason for the variations in the natural noon cycle are contained in the EPIC time lapse footage - https://www.youtube.com/watch?v=CFrP6QfbC2g&t=43s In a little over two weeks the South Pole will turn through the circle of illumination and the Equinox event where the Sun goes absent from view for the next 6 months. The single surface rotation as a function of the Earth's forward motion through space and around the Sun responds to the unequal speed of the planet hence the natural variations where it combines with intrinsic daily rotation. The North and South poles turn parallel with the orbital plane as do all points on the Earth's surface. Yet again you confuse cause with effect. Try to think things through! |
#4
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Kelleher's nightmare
The Equation of Time is a misnomer of sorts insofar as anything related to timekeeping such as hour, day, minute and so on is an outrigger of the calendar system which formats astronomical observations in the familiar 365/ 366 day format.
Strictly speaking the natural variations in the noon cycle have a distinct cause as a function of two distinct rotations, one constant and one variable and now easily visible in the wonderful time lapse footage that omits but implies the circle of illumination by which the two separate rotations are gauged. https://www.youtube.com/watch?v=CFrP6QfbC2g&t=43s At present the entire Antarctic continent can be seen to rotate along with the rest of the planet's surface as a function of daily rotation however the continent also process a distinct rotation across the fully illuminated surface of the Earth and parallel to the orbital plane. The timekeeping facility which equalizes the variations in the natural noon cycle to a 24 hour average ultimately answers to the motions of the Earth and the introduction of the fact that when daily rotation is subtracted, all points on the Earth's surface turn once to the central Sun in an uneven rotation. I do not have the answer as to why this fact is not loved and not presented as a fact but without it not even the seasons can be explained properly much less the links to the Equation of Time and timekeeping. |
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