# Possible to create gravitational fields

1. Apr 24, 2006

### Universe_Man

Do you think that it would eventually be possible to create gravitational fields by manipulating other fundamental forces in the universe? Like, maybe a magnetic field of sufficient strength could resemble a gravitational field?

I apologize if I seem ignorant to something well known, I'm still learning high school physics. I just like to throw random ideas around.

2. Apr 25, 2006

### Chronos

A good and interesting question, UM. BTW, welcome to PF, plenty of folks smarter than me hang out here and are capable of better answers than I have to offer. That said, you must suffer through my muddling answer.

Gravity is a unique force in the universe. It was the first to emerge [according to conventional theory], the weakest of the four fundamental forces, and most resistant to being combined with the rest of the 'big four'. See this article: http://en.wikipedia.org/wiki/Fundamental_force

3. Apr 25, 2006

### Mike2

Of course, if you could set up a very intense electric field, for example, this field would have an energy density and thus an equivalent mass density that would have a gravitational field associated with it. Good luck.

4. Apr 25, 2006

### Tzemach

Electrical fields come in 2 flavours (+/-) and usually balance each other out with little left over, gravity comes in only one force and so does nothing else (apart from distort time). Maybe the clue is in that if we could manipulate time we could alter gravity.

5. Apr 25, 2006

### ZapperZ

Staff Emeritus
Er.. be VERY careful here. Electric CHARGE may come in the different "flavors", but electric field does not! Write the E field for a point + charge, and for a point - charge. It is identical except for the the direction of the field as dictated by convention. These are not different "flavors", just different vectorial directions.

Zz.

6. Apr 25, 2006

### Tzemach

Sorry my phraseology was wrong but the two types of charge do tend to balance out. The Earth's electrical field for example is so evenly balanced it can deflect particles or rotate a compass needle but do little else. Earth's gravity is strong enough to hold the moon in its orbit and maintain an atmosphere for us to breathe.

7. Apr 25, 2006

### ZapperZ

Staff Emeritus
OK, so I will definitely come across as being picky here, but the compass needle isn't affected by the "Earth's electrical field".

Zz.

8. Apr 25, 2006

### Tzemach

That's right I agree that it might be considered "picky" but in the interest of accuracy I accept the correction.

9. Apr 25, 2006

### hossi

Hi, interesting question indeed. I would think, if there is some unified theory of everything, then gravity as well as the other fundamental forces should eventually be descibed by the same framework. Then, the magnetic field does not resemble gravity, it is gravity. Or, there is no point in distinguishing between them.

Best,

B.

10. Apr 30, 2006

### francesca

Puthoff

I subscribe the last post by Hossi...

But maybe you're thinking about Puthoff-like works, isn't it?

Gravity as a zero-point-fluctuation force
H. E. Puthoff
Phys. Rev. A 39, 2333–2342 (1989)

"Sakharov has proposed a suggestive model in which gravity is not a separately existing fundamental force, but rather an induced effect associated with zero-point fluctuations (ZPF’s) of the vacuum, in much the same manner as the van der Waals and Casimir forces. In the spirit of this proposal we develop a point-particle–ZPF interaction model that accords with and fulfills this hypothesis. In the model gravitational mass and its associated gravitational effects are shown to derive in a fully self-consistent way from electromagnetic-ZPF-induced particle motion (Zitterbewegung). Because of its electromagnetic-ZPF underpinning, gravitational theory in this form constitutes an already unified theory."

I know that this article is often cited talking about lifteror hyperspace engine...

:surprised

note: Puthoff's theory, like Heim's theory, doesn't need Higgs to explain mass... In the Puthoff's paper mass is related to the kinetic energy of the Zitterbeweging particle (parton he said)... This description don't convice me at all, but it would be borne in mind investigating quantum gravity vacuum...

11. Apr 30, 2006

### francesca

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