Force between two atoms

[Little Bang]

I found this at Wikipedia, is there any possible connection?

Superfluids, such as supercooled helium-4, exhibit many unusual properties. A superfluid acts as if it is a mixture between a normal component, with all the properties associated with normal fluid, and a superfluid component. The superfluid component has zero 1. viscosity, zero entropy, and infinite thermal conductivity. (It is thus impossible to set up a temperature gradient in a superfluid, much as it is impossible to set up a voltage difference in a superconductor.) One of the most spectacular results of these properties is known as the thermomechanical or fountain effect. If a capillary tube is placed in a bath of superfluid helium, and the tube is heated (even by shining a light on it), the superfluid helium will flow up through the tube and out the top (this is a result of the Clausius-Clapeyron relation). A second unusual effect is that superfluid helium can form a layer, a single atom thick, up the sides of any container it is placed in.

[Jay-qu]

I didnt say that they wouldnt form a bond, just that they probably wont gain enough kinetic energy from their gravitational potential to get close enough to bond (if someone knows the bonding energy of H2 this could probably be checked). Like Q said these equations are tough to wade through and I couldnt work out where an equilibrium would occur between the EM and Gravitational force.

[GAHD]

Originally Posted by hallenrm

it appears that the author of this article is saying somewhat similar thoughts.

http://www.newscientist.com/channel/...mg19225771.800

http://arxiv.org/abs/gr-qc/0603033 -
Gravitomagnetic London Moment


Don't subscribe, read the non hype version. The PDF there will list out the experiment, data, and author's insights.

Somehow it still reminds me of "cigar craft"...

[Little Bang]

Jay, I wasn't saying anything about your comment. my post was to show that helium at close to zero appears to defy gravity although I suspect it is more of an EM effect.

[Qfwfq]

It's the source of heat that "defies gravity".

[Little Bang]

Is there another liquid that exhibits the same phenomena Q?

[Jay-qu]

Water forms a meniscus due to surface tension, or is this a totally different phenomena?

[ronthepon]

Originally Posted by Jay-qu

Water forms a meniscus due to surface tension, or is this a totally different phenomena?

It is surface tention and adhesion.

[HydrogenBond]

If two hydrogen atoms were to form a hydrogen molecule, they first need to overcome a slight activation energy barrier. In other words, there would be an initial slight repulsive force that needs to be overcome that is slightly endothermic. Once the roller coaster gets to the top of that hill, even more energy will be released, than was inputted, due to magnetic addition of the two orbitals electrons. The roller coaster goes over the hill into a deep gully below the starting area.

When the hydrogen are separate they have postive and negative charges cancelling. When they become a hydrogen molecule, they have that plus the attractive force between opposite spin electrons. The activation energy is connected, in part, to getting the two electrons to flip into opposite spin orientations that are able to add and coordinate. A good collision with a little energy input will do the trick, i.e, activation energy.

[Jay-qu]

But how much is the activation energy exactly? will the collision from the gravitation be enough?