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81
Flat Earth Investigations / Re: I am wondering why I do not see...
« Last post by AATW on April 10, 2024, 10:26:03 AM »
Also see this image:
I'm pretty sure the globe earth paths shown on that are from more than one eclipse, I'd like to see the source for that.
And is your claim that this is an accurate FE map? If so how does it compare with known distances between places?
And how does the Sydney to Santiago flight work on that map? There's literally one in the air right now which you can track here:

https://uk.flightaware.com/live/flight/QFA27

(at the time of writing, here's a screenshot from about half an hour ago)

82
Flat Earth Investigations / Re: I am wondering why I do not see...
« Last post by AATW on April 10, 2024, 09:03:35 AM »
The Solar Eclipse eclipse paths on a Flat Earth make more sense to me than the Solar Eclipse paths on the Round Earth.

I think I've identified the issue.
This is a bit complicated but this video does a reasonable job of explaining it:



The headline is that straight lines when mapped on to a globe aren't straight when shown on a 2d map projection.
And the earth is rotating at different speeds at different latitudes, which complicates things.
Also note that the width of the eclipse path changes with latitude. The size of the shadow isn't different, it's just that the angle of the earth's surface with respect to that shadow is different which means it can be seen over a wider area.
84
Flat Earth Investigations / Re: I am wondering why I do not see...
« Last post by Tom Bishop on April 10, 2024, 01:55:43 AM »
The Solar Eclipse eclipse paths on a Flat Earth make more sense to me than the Solar Eclipse paths on the Round Earth. Consider the map paths on a Round Earth. On the eclipse path maps the Moon's shadow is making quite sharp North-South movements over the course of a few hours. However, the Moon does not orbit the earth in a sharp South-West to North-East angle.

In RE Moon's orbit deviates by only 5 degrees from the plane of the ecliptic, the Sun-Earth plane. It is also only moving slightly slower in the Sun in the sky, setting 50 minutes later each day

https://web.archive.org/web/20190211123505/http://ircamera.as.arizona.edu/Astr2016/lectures/skyappearance.htm



Consider how the above, with a Moon that moves slowly across the sky in comparison to the Sun, can make all of these wild shapes:

http://eclipse-maps.com/Eclipse-Maps/Welcome.html



Curiously, on a Northern Azimuthal FE map, the paths of the Solar Eclipse make symmetrical arcs:

From A Text-Book of Astronomy by George C. Comstock

https://www.gutenberg.org/files/34834/34834-h/34834-h.htm



Quote
Fig. 36.—Central eclipses for the first two decades of the twentieth century. Oppolzer.

Future eclipses.—An eclipse map of a different kind is shown in Fig. 36, which represents the shadow paths of [pg. 114] all the central eclipses of the sun, visible during the period 1900-1918 A. D., in those parts of the earth north of the south temperate zone. Each continuous black line shows the path of the shadow in a total eclipse, from its beginning, at sunrise, at the western end of the line to its end, sunset, at the eastern end, the little circle near the middle of the line showing the place at which the eclipse was total at noon. The broken lines represent similar data for the annular eclipses. This map is one of a series prepared by the Austrian astronomer, Oppolzer, showing the path of every such eclipse from the year 1200 B. C. [pg. 115] to 2160 A. D., a period of more than three thousand years.

Also see this image:

85
Flat Earth Investigations / Re: I am wondering why I do not see...
« Last post by stevecanuck on April 09, 2024, 11:03:26 PM »
Saw it today. Transcendent experience, I'm so glad I traveled to Texas to see it. I don't think it really proves anything about the shape of the Earth, but it's definitely a potent reminder of how awe-inspiring (and, dare I say, magical) the universe can be.

It could be used to create a juxtapostion map between moon and sun to be superimposed on a FE map to see if it makes sense. RE explains it perfectly. Can a FE model be created that does so?
86
Flat Earth Investigations / Re: I am wondering why I do not see...
« Last post by Action80 on April 09, 2024, 02:24:02 PM »
There is nothing indicating this system is based on RE. It is simply pattern based.

Quote
The coordinates of the Sun used in these eclipse predictions have been calculated on the basis of the JPL DE406 solar system ephemeris. This ephemeris consists of computer representations of the positions, velocities and accelerations of major Solar System bodies

And from:

https://eclipsewise.com/help/jpl-de.html

Quote
The observational data in the fits has been an evolving set, including: ranges (distances) to planets measured by radio signals from spacecraft, direct radar-ranging of planets, two-dimensional position fixes (on the plane of the sky) by VLBI of spacecraft, transit and CCD telescopic observations of planets and small bodies, and laser-ranging of retroreflectors on the Moon, among others.
What does any of these statements mean relative to the shape of the earth?
Quote
Of course they are not wrong. When you have a couple of thousand years of observing repeating patterns, you can pretty much write that down.
Again, the pattern only gives you a fairly rough indication of where and when the eclipse will be. To predict it to the accuracy they do now you have to do a load of more complicated modelling and they do that using a model of the solar system, not a FE model.
They do it using a pattern of historical movements of the sun and moon relative to the celestial sphere coordinates. It has nothing to do with RE or FE.

87
Flat Earth Investigations / Re: I am wondering why I do not see...
« Last post by AATW on April 09, 2024, 07:56:32 AM »
There is nothing indicating this system is based on RE. It is simply pattern based.

Quote
The coordinates of the Sun used in these eclipse predictions have been calculated on the basis of the JPL DE406 solar system ephemeris. This ephemeris consists of computer representations of the positions, velocities and accelerations of major Solar System bodies

And from:

https://eclipsewise.com/help/jpl-de.html

Quote
The observational data in the fits has been an evolving set, including: ranges (distances) to planets measured by radio signals from spacecraft, direct radar-ranging of planets, two-dimensional position fixes (on the plane of the sky) by VLBI of spacecraft, transit and CCD telescopic observations of planets and small bodies, and laser-ranging of retroreflectors on the Moon, among others.

Quote
Of course they are not wrong. When you have a couple of thousand years of observing repeating patterns, you can pretty much write that down.
Again, the pattern only gives you a fairly rough indication of where and when the eclipse will be. To predict it to the accuracy they do now you have to do a load of more complicated modelling and they do that using a model of the solar system, not a FE model.
88
Flat Earth Investigations / Re: I am wondering why I do not see...
« Last post by Roundy on April 08, 2024, 11:09:58 PM »
Saw it today. Transcendent experience, I'm so glad I traveled to Texas to see it. I don't think it really proves anything about the shape of the Earth, but it's definitely a potent reminder of how awe-inspiring (and, dare I say, magical) the universe can be.
89
Flat Earth Investigations / Re: I am wondering why I do not see...
« Last post by Action80 on April 08, 2024, 07:13:26 PM »
If the Saros cycles originated with a culture adhering to a Flat Earth system, and that is what predicts the paths, then that is the FE method.
Saros cycles don't predict the exact path.
This site has a list of past and future eclipses, including today's, and explains how the predictions are calculated:

https://eclipsewise.com/solar/SEhelp/de406-predictions.html
There is nothing indicating this system is based on RE. It is simply pattern based.

Quote
The coordinates of the Sun used in these eclipse predictions have been calculated on the basis of the JPL DE406 solar system ephemeris. This ephemeris consists of computer representations of the positions, velocities and accelerations of major Solar System bodies

Doesn't sound like a FE way of doing it to me. There's a lot of people booking hotel rooms on the basis of predictions like this, I reckon we'd know about it if they were wrong.
Of course they are not wrong. When you have a couple of thousand years of observing repeating patterns, you can pretty much write that down.
90
Flat Earth Investigations / Re: I am wondering why I do not see...
« Last post by AATW on April 08, 2024, 04:44:37 PM »
If the Saros cycles originated with a culture adhering to a Flat Earth system, and that is what predicts the paths, then that is the FE method.
Saros cycles don't predict the exact path.
This site has a list of past and future eclipses, including today's, and explains how the predictions are calculated:

https://eclipsewise.com/solar/SEhelp/de406-predictions.html

Quote
The coordinates of the Sun used in these eclipse predictions have been calculated on the basis of the JPL DE406 solar system ephemeris. This ephemeris consists of computer representations of the positions, velocities and accelerations of major Solar System bodies

Doesn't sound like a FE way of doing it to me. There's a lot of people booking hotel rooms on the basis of predictions like this, I reckon we'd know about it if they were wrong.