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...But there is an even simpler way to check if we can see the same celestial body at the same time from Argentina and Australia. Just wait until the December solstice. See the Sun rising in Ushuaia and setting in Sydney, or even as far as Christchurch: https://www.timeanddate.com/worldclock/sunearth.html?iso=20201221T0852 . You don't even need to go there or find someone who lives there, a live webcam will do the trick.
Q. How can two people on opposite sides of the earth in Australia and South Ameirca (sic) both see the same South Pole Stars simultaneously?
A. Since those areas are many hours apart from each other, when it is night or dusk for one area it is likely day or dawn for the other. It is questioned whether it is the case that those observers see the same stars simultaneously. Due to the time difference it may be that they see the stars alternately.
Q. How can two people on opposite sides of the earth in Australia and South Ameirca (sic) both see the same South Pole Stars simultaneously?
A. Since those areas are many hours apart from each other, when it is night or dusk for one area it is likely day or dawn for the other. It is questioned whether it is the case that those observers see the same stars simultaneously. Due to the time difference it may be that they see the stars alternately.
Have you tried the experiment yourself? The purpose of the photo in my post is to illustrate what to do in the interests of finding out ...
The explanation for the Moon Tilt Illusion in RE is an effect of perspective.
When viewing the Moon Tilt Illusion, the Moon will often be tilted upwards:
RE Theorists explain this as result of a perspective effect (my emphasis)
The Ping Pong Perspective
Holding a white ball at arm’s length in the direction of the Moon shows how lunar phases depend on where the Moon is in the sky with respect to the Sun. S&T: J. Kelly Beatty
The Moon's phases are actually related to orbital motion, and there's a simple and fun observation that shows how they're connected. All you'll need is a Ping-Pong ball to simulate the Moon—actually, any small, white sphere would work. Then head outside about an hour before sunset, or around the time of a first-quarter Moon. Find the Moon in the southern part of the sky, then hold the ball up at arm's length right beside it.
You'll see that the ball shows exactly the same phase as the Moon. The Sun illuminates both the ball and the Moon from the same direction, and you see them as partly sunlit and partly in shadow, their bright and dark portions mimicking each other perfectly. If the weather stays clear, you can repeat this observation on the next several afternoons. Each day the Moon's orbital motion has carried it farther east, and the sunlit portion of its disk has grown larger. If you hold your ball up near the Moon, you'll see that its “phase” has thickened too.
To sneak a preview of the Moon's appearance in the days to come, simply move the ball farther east. And if you move it all the way over so your arm points low in the eastern sky, the side of the ball that's facing you will be almost completely illuminated — nearly a “Full Ball,” so to speak. And, sure enough, a day or two before full Moon, the Moon hangs low in the eastern sky just before sunset and is almost completely illuminated.
There is a centrifugal force calculator where you can play around with the fields and get some possible values for a centrifugal acceleration of 1g.
https://www.omnicalculator.com/physics/centrifugal-force
(Mass field can be any value and won't affect acceleration or velocity fields)
Centrifugal acceleration: 1g
Tangential velocity: 100,000 mph
Radius: 126,626 miles
Centrifugal acceleration: 1g
Tangential velocity: 250,000 mph
Radius: 791,413 miles ..................
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This is a limit of a more complex (and not yet final) expression as x approaches infinity, so this will only work when y is much greater than x - that is to say, when the vertical distance traveled is much greater than the horizontal distance traveled. Put another way, its accuracy will improve the closer the light ray is to vertical. Therefore, while it is not valid for short-range experiments, it can give an idea of how much sunlight would bend on its way to the Earth, for instance.
Where (0,0) is understood to be the point at which the light ray is horizontal (that is, the derivative of this function is zero).
Definition of terms:
x, y - co-ordinates in the plane of the light ray, where y is increasing in the direction of fastest decreasing Dark Energy potential, and x is increasing in the direction of the component of propagation of the ray which is perpendicular to y.
c - the speed of light in a vacuum.
β - the Bishop constant, which defines the magnitude of the acceleration on a horizontal light ray due to Dark Energy. When the theory is complete, attempts will be made to measure this experimentally.
It is believed that the bending of light does not simulate the rate of globe earth curvature. Instead, the bending occurs more gradually over a greater distance.
