ERATOSTHENES DID NOT PROVE THE EARTH IS A GLOBE!

[Polymath257]

He showed the flat earth existing in a heliocentric universe. That doe not reflect my geocentric model whatsoever.
Also I don't claim we live on a Mercator projection map, nor do I claim the earth is a floating rectangle flying through outer space.

But you agree that the other planets are spherical?

 

[Polymath257]

You agree with the premise. Argument over.

Eratosthenes didn't prove the Earth is a globe. But he did use that fact, which was already known.

 

[Subduction Zone]

You agree with the premise. Argument over.

Nope, quote mining is dishonest. You forgot what else he said:

"That had already been done. He showed how large that globe is, so he did show something about the globe."

The Greeks were not ignorant; Due to being a seafaring nation they were aware that the Earth is a globe. He was right, his goal was not to prove what was already known. It was to measure the size of the Earth. That was what was amazing at that time and at that level of technology. He did an amazing job taking into account the limitations of that time.

 

[Flat Earth Kyle]

But he did use that fact, which was already known.

That is a separate debate. Feel free to start a new thread for that, abide rule 4 and stay on topic.

 

[F1fan]

He showed the flat earth existing in a heliocentric universe. That doe not reflect my geocentric model whatsoever.
Also I don't claim we live on a Mercator projection map, nor do I claim the earth is a floating rectangle flying through outer space.

He didn't prove we live on a flat chunk of land, did he? Do you know why? Because we live on a planet. We have photos from space. Why isn't that proof for you?

 

[Flat Earth Kyle]

But you agree that the other planets are spherical?

I believe earth is a plane, I never describe it as a planet in outer space. That isn't my model. The floor in my house is not comparable to the lights on my ceiling. They are not the same thing.

 

[F1fan]

I believe earth is a plane, I never describe it as a planet in outer space. That isn't my model.

Yet photos from space show the earth is a planet. Any comment?

 

[Subduction Zone]

RULE 3 VIOLATION: (THAT STAFF ARE IGNORING)
View attachment 80055

Well there goes another irony meter. Especially considering that if one is extremely legalistic he has broken this rule himself countess times.

Just recently with a moderator.

 

[Heyo]

You agree with the premise. Argument over.

That wasn't the only claim you made and it was never in dispute.

Eratosthenes assumed the Earth to be a globe and the fact that he could correctly calculate the circumference is additional evidence to the premise being correct. The argument is over when we have found agreement about that aspect of your OP.

 

[Subduction Zone]

Foucault's pendulum never proved the shape of the earth, if you want we can open another thread and talk about it there.

Actually it does. You simply do not understand how it does so.

 

[Polymath257]

I believe earth is a plane, I never describe it as a planet in outer space. That isn't my model. The floor in my house is not comparable to the lights on my ceiling. They are not the same thing.

You didn't answer the question. Do you believe the other planets are spherical?

 

[Polymath257]

That is a separate debate. Feel free to start a new thread for that, abide rule 4 and stay on topic.

Well, you misrepresented (or misunderstood) what Eratosthenese was trying to do, suggesting that he wanted to prove the earth to be spherical.

 

[Polymath257]

Actually it does. You simply do not understand how it does so.

Technically, it shows the earth is a rotating coordinate system. That alone doesn't imply that it is spherical

 

[Subduction Zone]

Technically, it shows the earth is a rotating coordinate system. That alone doesn't imply that it is spherical

Okay, true. But then science does not "prove" anything I think that he is using the word prove in the colloquial sense. I am sure that he cannot do the math for a mathematical proof. Okay lets change it a bit, the local rotation that one sees goes from once a day clockwise at the North Pole to a slower and slower rate until one gets to the equator where it zero and then it reverses and rotates counterclockwise faster and faster until it is rotating once again at once a day at the South Pole, but in the reverse direction of the North Pole. That is extremely strong evidence for the globe model. It is something that the globe can explain that the Flat cannot.

 

[Polymath257]

Okay, true. But then science does not "prove" anything I think that he is using the word prove in the colloquial sense. I am sure that he cannot do the math for a mathematical proof. Okay lets change it a bit, the local rotation that one sees goes from once a day clockwise at the North Pole to a slower and slower rate until one gets to the equator where it zero and then it reverses and rotates counterclockwise faster and faster until it is rotating once again at once a day at the South Pole, but in the reverse direction of the North Pole. That is extremely strong evidence for the globe model. It is something that the globe can explain that the Flat cannot.

agreed

 

[Alien826]

Okay, true. But then science does not "prove" anything I think that he is using the word prove in the colloquial sense. I am sure that he cannot do the math for a mathematical proof. Okay lets change it a bit, the local rotation that one sees goes from once a day clockwise at the North Pole to a slower and slower rate until one gets to the equator where it zero and then it reverses and rotates counterclockwise faster and faster until it is rotating once again at once a day at the South Pole, but in the reverse direction of the North Pole. That is extremely strong evidence for the globe model. It is something that the globe can explain that the Flat cannot.

Isn't that shown by the direction water rotates around the plug hole in a sink (opposite in northern and southern hemispheres)? Also weather systems, I think.

Incidentally, I wonder how they explain sunset and sunrise. From the surface of the Earth, the sun seems to travel across the sky, first appearing at the eastern horizon and finally disappearing at the western horizon. The next day, there it is again in the east. How does it get there?

 

[Subduction Zone]

Isn't that shown by the direction water rotates around the plug hole in a sink (opposite in northern and southern hemispheres)? Also weather systems, I think.

Incidentally, I wonder how they explain sunset and sunrise. From the surface of the Earth, the sun seems to travel across the sky, first appearing at the eastern horizon and finally disappearing at the western horizon. The next day, there it is again in the east. How does it get there?

No. Sinks are too small and the water is almost always too turbulent for that. The direction varies. I have even seen it reverse in the course of draining. Though with bodies the size of kiddie pools this has been observed. They tend to fill the and wat over a day for the water to settle. Often with a cover. Here is a video that shows too people that did just that. They took several steps to remove all initial rotation:

 

[Heyo]

Isn't that shown by the direction water rotates around the plug hole in a sink (opposite in northern and southern hemispheres)? Also weather systems, I think.

Incidentally, I wonder how they explain sunset and sunrise. From the surface of the Earth, the sun seems to travel across the sky, first appearing at the eastern horizon and finally disappearing at the western horizon. The next day, there it is again in the east. How does it get there?

There are multiple flat Earth "models", one of the more prominent one uses the Azimuthal equidistant projection - Wikipedia. The sun moves in a circle above the equatorial region (shifting between the tropics of Cancer and Capricorn.

 

[Alien826]

There are multiple flat Earth "models", one of the more prominent one uses the Azimuthal equidistant projection - Wikipedia. The sun moves in a circle above the equatorial region (shifting between the tropics of Cancer and Capricorn.

Hmmm. Wouldn't it always be daytime though, as the sun would always be visible at some angle everywhere on Earth?

 

[Subduction Zone]

Hmmm. Wouldn't it always be daytime though, as the sun would always be visible at some angle everywhere on Earth?

Flat Earthers often have a spotlight Sun. It does not shine everywhere equally. But they have no justification for that.