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Who revolves around whom?

שו”תCategory: philosophyWho revolves around whom?
asked 2 years ago

You explained that Copernicus didn’t discover anything, because the main thing is how you describe the phenomenon. It’s like the Earth revolves around the Sun if you put the axes in the Sun, and vice versa.
But seemingly there is a big difference. It is true that it can be described in both ways, but the first way is more correct because the Earth rotates due to its own motion, while in the second way the Sun rotates not due to its own motion but because the Earth rotates around it.
In other words, it is more correct to say that the Earth rotates because it is in motion relative to the Sun, and it is stationary.


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מיכי Staff answered 2 years ago
I didn’t understand what it means that something rotates “due to the movement of something else.” You assume what you’re asking. I claim that there is no distinction between one and the other, and you assume that there is, and therefore you ask. But there isn’t. By the way, I’m not talking about the Earth’s movement around its axis, but around the Sun. I think you’re referring to the former.

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א replied 2 years ago

Doesn't it depend on the reference point? If the reference point is the Earth then there is no difference. But if we take any reference point there will still be no difference?

מיכי Staff replied 2 years ago

I didn't understand the question. The choice of reference point determines who moves and who stands. But this choice is arbitrary.

א replied 2 years ago

The choice comes from the application (at least if you go in the direction of engineering. I know less about pure physics). And as such it affects the question. The question was whether there is no difference at every point.
But I got the answer.

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