11–20 of 49 posts
So, it changes the distances between the atoms of a water molecule? If so, would that mean this can affect chemical reactions involving dipoles, too?
That is a really neat effect. Basically if you can put a water molecule inside a flat field it lines itself up with that field and can be compressed. I would bet this has an impact on Graphene based desalination efforts as well.
That type of filtering was also something that I had in mind. It would additionally be interesting if the water would react to EM fields and confined spaces in a way that allowed for a 'micro' pump. Such a system might be able to operate in zero-g and thus be useful on extended space missions.
Does this also mean compressing/decompressing water can generate an electric field?
Nah, probably not.from how i read it, is not that the field is strong, but that it's so incredibly localised. The molecules arrange along the field lines (H being more positive and O more negative). Since the field lines are so close in this case, and the field's gradient (more or less: inverse of width between field lines) is so high, the O parts snuggle together a bit more, as do the H parts. Anyway, that's how i r…
Does this also mean compressing/decompressing water can generate an electric field?
Probably, but it would take a lot of mechanical force. From the article: > The compression is only 3 percent, but that pressurizes the water—it's equivalent to 100 atmospheres Although, that's not uncommon for ice giants, so it might be causing part of Ouranos (aka Uranus) magnetic field. > The troposphere is thought to have a highly complex cloud structure; water clouds are hypothesised to lie in the pressure range…
Earlier quoted context omitted.
Probably, but it would take a lot of mechanical force. From the article: > The compression is only 3 percent, but that pressurizes the water—it's equivalent to 100 atmospheres Although, that's not uncommon for ice giants, so it might be causing part of Ouranos (aka Uranus) magnetic field. > The troposphere is thought to have a highly complex cloud structure; water clouds are hypothesised to lie in the pressure range…
Implication: Depending on the energy input, couldn’t you create an engine from this? Sounds like a perpetual motion machine.
Ahh, "3 percent" means that from a fluid dynamics point of view, the incompressibility assumption is still a good assumption valid for most macroscopic applications. :) Still very impressive to achieve that under ambient pressure with an electric field gradient.
"This is an unexpected phenomenon, contrary to what we thought we knew about nanopore transport. It took three years to work out what it was the simulations were showing us. After exploring many potential solutions, the breakthrough came when we realized that we should not assume water is incompressible. Now that we understand what's happening in the computer simulations, we are able to reproduce this phenomenon in t…
Pretty sure anyone in actual scientific computing stays far, far away from floating point numbers and sticks to arbitrary precision ones instead.
"This is an unexpected phenomenon, contrary to what we thought we knew about nanopore transport. It took three years to work out what it was the simulations were showing us. After exploring many potential solutions, the breakthrough came when we realized that we should not assume water is incompressible. Now that we understand what's happening in the computer simulations, we are able to reproduce this phenomenon in t…
> I probably would have written it off as floating point shenanigans. Pretty sure anyone in actual scientific computing stays far, far away from floating point numbers and sticks to arbitrary precision ones instead.
http://manual.gromacs.org/documentation/2016/install-guide/i...
"This is an unexpected phenomenon, contrary to what we thought we knew about nanopore transport. It took three years to work out what it was the simulations were showing us. After exploring many potential solutions, the breakthrough came when we realized that we should not assume water is incompressible. Now that we understand what's happening in the computer simulations, we are able to reproduce this phenomenon in t…
> I probably would have written it off as floating point shenanigans. Pretty sure anyone in actual scientific computing stays far, far away from floating point numbers and sticks to arbitrary precision ones instead.