Cyclic Forces in the Solar System & Zodiac

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mreq
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Hy. From what it is known today, are there any forces that go up and down in cycles ? This regarding planet earth. I talk about whatever forces in the solar system and zodiac. Something like a few days or weeks up then down, then up then down etc.
Thanks!
 
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mreq said:
Hy. From what it is known today, are there any forces that go up and down in cycles ? This regarding planet earth. I talk about whatever forces in the solar system and zodiac. Something like a few days or weeks up then down, then up then down etc.
Thanks!

Because the orbit of the Earth around the Sun is elliptical (the radius varies), the gravitational attractive force between the Sun and Earth varies throughout the year. Is that what you mean?
 
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berkeman said:
Because the orbit of the Earth around the Sun is elliptical (the radius varies), the gravitational attractive force between the Sun and Earth varies throughout the year. Is that what you mean?

And this force is a cycle of about two weeks up and two weeks down ?
Thanks!
 
mreq said:
And this force is a cycle of about two weeks up and two weeks down ?
Thanks!

No. He said "over the course of a year", not "over a course of four weeks".

Now the Moon orbits in just a little under 4 weeks, and it also has an eccentric orbit, so its tidal effects will vary slightly over that time. But at this point, I have to ask: Why do you ask? What exactly are you looking for?
 
I'm looking if there is some cycles of forces that interract with Earth ?
 
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mreq said:
I want to know all the cycles of forces !

Why don't you list everything you can think of first, and then we'll let you know if you've left anything out.
 
mreq said:
I'm looking if there is some cycles of forces that interract with Earth ?

That's too vague. For what reason do you want this information? What do you expect to learn from it? I mean, technically, everything in the universe exerts some force on the Earth. It's just that for the vast majority it is negligible for all practical purposes.
 
Janus said:
That's too vague. For what reason do you want this information? What do you expect to learn from it? I mean, technically, everything in the universe exerts some force on the Earth. It's just that for the vast majority it is negligible for all practical purposes.

I feel something but i don't know what. It will be ok to tell me what you know or to point me where to look.
Thanks!
 
We do know with a fair degree of certainty most of the forces in universe have been remarkably consistent for billions of years. See, for example, the alpha constant.
 
I didn't knew about the alpha constant. I'm gona read more about it.
What else there is ?
Thanks!
 
Hmm. There's not something else ?
 
Sorry, but vague/ill-formed questions tend not to get a lot of responses because there really isn't anything to respond to. You'll need to ask better questions to get more/better responses.
 
If i take a piece of paper and i want to write everything that's "in the air". What that would be ? gravitation, radiation, rays ...
What else ?
 
Is the sun rotation an energy cycle ?