61–65 of 65 posts
Earlier quoted context omitted.
If it's stable at room temperature wouldn't it make a really high density fuel too?
I wonder what the specific impulse of the stuff would be.
http://www.projectrho.com/public_html/rocket/enginelist.php#...
> We used type IIac conic synthetic diamonds (supplied by Almax Easy-Lab) with ~30 micron diameter culet flats. About 5 microns were etched off of the diamond culets using the technique of reactive ion etching, to remove defects from the surface. The diamonds were then vacuum annealed at high temperature to remove residual stress. Alumina is known to act as a diffusion barrier against hydrogen. The diamonds, with the…
> Photos were taken with a smartphone camera at the ocular of a modified stereo microscope Still incredible! We as people tend to underestimate just how "magical" our mobile phones are.
Guys, this is literally the holy grail of high pressure physics!
One of my co-workers got his PhD with the lab/advisor that published his paper. He thought they weren't going to be able to synthesize it, so he left to be a quant. I sent him an email saying 'hey, isn't this what your PhD was on?'. Then, I looked up his thesis and saw that this was his thesis and, but this publication was from his lab, with his advisor as co-author. Oh man. I hope I didn't cause any existential drea…
Earlier quoted context omitted.
Technically it's degenerate matter since the atoms do not interact due to the pressure and other conditions, this happens because the electrons would have to follow the exclusion principle under those pressures/densities the electrons basically separate from the hydrogen proton as they cannot occupy the same space and the hydrogen becomes a degenerate matter; a sea of electrons flowing freely through a lattice of pro…
>The problem with hydrogen as fuel storage (mainly for space travel) is the pressure, operating a fuel tank at 400 gPA or higher is going to be tricky Operating a fuel tank at 1 MPa is tricky. Operating a fuel tank at 400 GPa is ludicrous.
Someone with a chem/physics background, could you please explain why metallic hydrogen is only theorized to be a superconductor? Is such a property not predictable?
The problem (not having a condensed matter background, so my answer might not be entirely right) is that we can't solve the Schrödinger equation exactly for many-atom systems. So we need to approximate our solutions to be able to get a good idea of what properties a material will have. Our approximations are pretty good and we have a decent idea of when some things superconductor. But our theories of superconduction…