/sci/ - Science & Math

>>14699101
>circle
Doesn't exist

>>14699191
What do you mean? Stars at a distance do look like little dots

>>14699101
It depends on the optics and cosmology of the flat earth. Some flat earth says stars are only 1000 ft away. Some say they're an optical illusion. On a flat earth, there's no explanation about how 8 telescopes could even see the same object.

Flat earth is non rigorous with no model so you could literally make it anything.

>>14700830
>On a flat earth, there's no explanation about how 8 telescopes could even see the same object.
Just look upwards?

>>14699101
You would get the same circle but stretched out.

>>14700830
>Some flat earth says stars are only 1000 ft away
really? that's interesting. wonder if they ever try hitting them with model rockets, drones or RC aircraft?

>>14699101
Do you expect people on /sci/ to be able to do interferometry in their head?

>>14700855
On s flat earth, I take 8 telescopes and evenly place them longitudinally. I point them south along the line of longitude. Each of the 8 telescopes are pointing in different directions.

Flat earth cannot explain how the telescopes would even see the same object. Without that explanation, the thought experiment is useless.

>>14699101
A point source very far from the "screen" (the flat plane) would have a plane wavefront. So the telescopes would receive the signal simultaneously. If they were far apart they would realize that the signal doesnt reach in different times, as would happen in a spherical earth.
However, this is assuming a monochromatic coherent source. Also, I guess for the really distant point source the signal would reach at the same time in both models, approximately. It depends on all the relative distances, really

>>14700855
If multiple telescopes at different longitudes in the Southern hemisphere point towards Antarctica and look up, how can they see the same stars? They should be looking in different directions on a flat Earth.

>>14700866
>really?
No, he's talking out of his ass (as expected from an american), the only flat earth phd (censored) thesis I know of talls about the distance being 7,000 km
https://www.reddit.com/r/conspiracy/comments/94fi9r/flat_earth_phd_thesis_proofs_reasons_for_deception/

>>14700874
>Do you expect people on /sci/ to be able to do interferometry in their head?
That's just basic interferometry, anyone who studied it should be able to know what happens when measuring points on a plane looking at a circle upwards are considered to be on a curved surface

>>14700931
>Each of the 8 telescopes are pointing in different directions.
You do know that those telescopes can rotate right?

>>14700931
>I point them south along the line of longitude.
If you pointed all of them to the south you wouldn't be able to see the dot on a globe earth either you moron (there are telescopes in chile, Europe, etc)

>Without that explanation, the thought experiment is useless
It's not, you're just trying to run away from a basic interferometry question

>>14700940
>If multiple telescopes at different longitudes in the Southern hemisphere point towards Antarctica
Why would they point to Antarctica instead of to the star they need to observe you dumbass?

>>14699101
It's a pointless question, flat earth does not have a working model. You could just as well be asking if a wizard cast autismus instantus spell what color would it be? We could certainly speculate on the color but ultimately you came up with it so it's what ever color you want.
On flat earth light does not travel the way it travels in our universe because it if did sun would be visible from everywhere and it's clearly not in any of the major interpretations of flat earth so since you are changing the properties of light with your assumptions you can't then ask about the properties of light without telling us how they behave.It's basically cringe to come to /sci/ and then ask what number you are thinking.

>>14700948
all of them? if theres a dome, its 7000km high in the center and all the stars are really just light sources on the inside surface of that dome, the distances would be different depending where you stood. thanks for the link.

>>14700967
thats not his point. on a flat map, south means the direction opposite the center where the north pole is. pointing those 8 telescopes 'south' would mean they are all pointing in opposite directions and would not be able to see the same things.

>>14700957
>anyone who studied
So nobody on /sci/

>>14700957
Is it a monochromatic coherent source? Otherwise you cant do interferometry. Also, what is the distance of the plane to the source? You can have Fresnel diffraction or Fraunhoffer diffraction depending on the distance. What is the exact relative positions of the telescopes? All this matters

>>14700979
>Why would they point to Antarctica instead of to the star
Are you pretending to be retarded? You cut off the quote right where it says they look at the stars.

>>14700971
Real observation shows that telescopes on opposite sides of the globe in the same hemisphere can see the same stars. You deliberately chose a north/south location in your counter example, but it means nothing.

I specifically didn't mention hemispheres because flat earth doesn't have them. Now answer the question or delete the thread.

>>14700983
retard, it has a working model that explains everything perfectly without errors like the globe model does

>>14701114
Ok, can you show me a link, a paper, a video, literally anything that explains observations and makes predictions that don't fit a globe? I'll wait.

>>14699101
It wouldnt change anything, that image was built with pairs of telescopes on each edge of the earth

>>14701114
>it has a working model
seems that no flat earther is aware of it because whenever i ask for detail they don't even know how high up the sun is, or how big it is, nor how high the dome is anywhere. You should get on to them anon.

>>14701040
and it doesn't occur to you to simply rotate them to point at the same object that is above all the points?

>>14699101
>Assume the Earth is flat
Go back to /x/

>>14700983
flat earth just confuses the base question.
Just substitute it with a sufficiently large rigid disk.
Observe a light source that is above the disk from eight telescopes.
That is less messy, maybe.

>>14702611
Did it occur to you that deflecting answers because you don't have any is not acceptable in scientific discourse?

In real observations, multiple telescopes oriented due south can see a star such as Polaris Australis without having to rotate relative to each other. This is why your question is not relevant to the discussion.

>>14702685
Hiky fucking shit you are one dumb sonofabitch.

>>14700948
so how can celestial navigation work? the parallax on "stars" just 7000km away is significant

>>14702722
not an argument

>>14700855
At what latitudes?

>>14699101
how are the telescopes distributed? you could still distribute 8 telescopes planarly on a spherical earth.

>>14702685
>>14703019
never mind, i get the point

>>14702735
never said it was, dipshit.
It is just an observation of you.