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mreq
Jul28-10, 02:52 PM
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!

berkeman
Jul28-10, 04:19 PM
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?

russ_watters
Jul28-10, 05:23 PM
Tidal forces, as well.

mreq
Jul29-10, 09:32 AM
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!

Janus
Jul29-10, 11:14 AM
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?

mreq
Jul29-10, 11:55 AM
I'm looking if there is some cycles of forces that interract with earth ?

berkeman
Jul29-10, 11:56 AM
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
Jul30-10, 10:48 AM
I don't know.

Janus
Jul31-10, 10:44 AM
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.

mreq
Aug1-10, 05:47 AM
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 waht you know or to point me where to look.
Thanks!

Chronos
Aug1-10, 06:07 AM
We do know with a fair degree of certainty most of the forces in universe have been remarkably consistant for billions of years. See, for example, the alpha constant.

mreq
Aug2-10, 01:49 PM
I didn't knew about the alpha constant. I'm gona read more about it.
What else there is ?
Thanks!

mreq
Aug8-10, 08:10 AM
Hmm. There's not something else ?

russ_watters
Aug9-10, 12:13 AM
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.

mreq
Aug9-10, 12:59 PM
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 ?

berkeman
Aug9-10, 03:33 PM
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 ?

Here you go:

http://en.wikipedia.org/wiki/Theory_of_everything

Be sure to follow each of the links at the bottom of that page also.

mreq
Dec26-10, 06:59 AM
Is the sun rotation an energy cycle ?

Vanadium 50
Dec26-10, 08:38 AM
Like Russ said:

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.