More importantly, here is a company who has actually used magnesium diboride in a real product:
http://www.columbussuperconductors.com/ ... elease.pdf
Search found 79 matches
- Wed Nov 07, 2007 6:07 am
- Forum: Theory
- Topic: MgB2 Superconductors
- Replies: 7
- Views: 5797
- Mon Oct 22, 2007 12:11 am
- Forum: Design
- Topic: Control Processor
- Replies: 63
- Views: 44711
I have programmed in many languages including assembler and FORTH. FORTH code is difficult to read. For example, all the arithmetic expressions are in reverse polish notation. It lends itself well to writing unreadable code. Any decent Real Time Operating System for an embedded system should be fast...
- Sat Aug 25, 2007 3:22 am
- Forum: Design
- Topic: Experiments with solid-state magnets
- Replies: 51
- Views: 38687
This toroidal magnet violates Maxwell's equations. A loop of magnetic field must interlock with a loop of current. In a permanent magnet, the current flows inside the material in loops that enclose the field. For example, in a cylindrical magnet with the poles on the ends, the currents are on the cu...
- Mon Aug 13, 2007 10:24 pm
- Forum: Fund-Raising
- Topic: Allen and Gates as philanthropists of fusion energy
- Replies: 15
- Views: 38331
Perhaps thats a good reason to build it someplace with less regulations. I might suggest Sealand ;-) Long way to string the underwater extension cord, and I hope you can cool the prototype with salt water. http://en.wikipedia.org/wiki/Principality_of_Sealand Maybe China. When I was there a few year...
- Mon Aug 13, 2007 7:24 pm
- Forum: Fund-Raising
- Topic: Allen and Gates as philanthropists of fusion energy
- Replies: 15
- Views: 38331
My bet is that it may have to do something with the fabled "tokamak mafia". Enough with the conspiracy nonsense. It's the NRC. Today it would take about 6 years to get permission to build a reactor of pre-approved design. It takes years, and IIRC, about 100 million dollars to license a PWR or a BWR...
- Thu Aug 09, 2007 11:01 pm
- Forum: Theory
- Topic: Polywell Parameters
- Replies: 33
- Views: 28341
Well, if the grid has to be positive to contain the electrons, then the ions will be repelled by the grid and will not be contained. Yep. Except that the ions are contained by attraction to the electrons. Except for the fusion ions which escape from the reaction area due to their high energy. If on...
- Sat Aug 04, 2007 5:37 am
- Forum: Theory
- Topic: Polywell Parameters
- Replies: 33
- Views: 28341
The video at the first link is totally unrealistic. It shows electrons leaving the cube in the center of the coils going parallel to the field, and then coming back even after they leave the area of maximum magnetic field. Such an electron will go straight off into infinity, just like in a mirror m...
- Tue Jul 31, 2007 6:27 am
- Forum: Fund-Raising
- Topic: Cutting Costs?
- Replies: 32
- Views: 33159
The least expensive thing would be a good simulation. Indrek has a real good start on this. For redundancy's sake, here is his website: http://www.mare.ee/indrek/ephi/ He even includes source code!!!
- Sat Jul 28, 2007 9:50 pm
- Forum: Awareness
- Topic: Let's make an FAQ of Polywell
- Replies: 15
- Views: 17602
Why not put this information on http://wiki.polywell.org ? IMHO, an encyclopedia is more organized than a FAQ.
- Sat Jul 28, 2007 8:14 pm
- Forum: Theory
- Topic: Polywell Parameters
- Replies: 33
- Views: 28341
The video at the first link is totally unrealistic. It shows electrons leaving the cube in the center of the coils going parallel to the field, and then coming back even after they leave the area of maximum magnetic field. Such an electron will go straight off into infinity, just like in a mirror m...
- Fri Jul 27, 2007 4:56 am
- Forum: Design
- Topic: Experiments with solid-state magnets
- Replies: 51
- Views: 38687
PM's just have too much electron loss, so a coil will always be more efficient. I'm not positive about this. The Van Allen Radiation Belts are confined with a permanent magnet called the Earth. The mirror losses cause the northern lights. Don't know the confinement time or density or temperature. M...
- Fri Jul 27, 2007 4:24 am
- Forum: Theory
- Topic: Fusion litelature and website suggestions
- Replies: 37
- Views: 42763
I just discovered the Polywell Project Wiki at http://wiki.polywell.org . Set up about a month ago, requires approval to edit, and no significant content yet. No copyright notice so I suppose it is copyright by default. A good place to put links, technical stuff, etc.
- Wed Jul 25, 2007 8:27 pm
- Forum: News
- Topic: Arnie funding Polywell?
- Replies: 17
- Views: 45569
Re: California NOT funding Polywell research
He pointed out that when a news site doesn't even have a phone number, you have to wonder about their credibility. It is worse than that. The domain is registered to GoDaddy.com, see http://who.godaddy.com/WhoIsVerify.aspx?domain=nextenergynews.com&prog_id=godaddy . DomainsByProxy.com sole business...
- Tue Jul 24, 2007 3:37 am
- Forum: Theory
- Topic: well depth and electron counts
- Replies: 11
- Views: 11079
Re: thanks
Thanks guys. It helps to know even a rough order, 1E12 and up particles is gonna put run time in months even for a few steps. I know there are engineering limits that make going much smaller than WB6's 15cm diameter infeasible. If simulating just the electrons with the B field and the electric fiel...
- Mon Jul 23, 2007 11:19 pm
- Forum: Theory
- Topic: well depth and electron counts
- Replies: 11
- Views: 11079
For beta=1, electron density can be calculated from the energy density of the magnetic field and the kinetic energy of the electrons. You can't assume beta=1. That is the absolute maximum pressure that excludes all the magnetic field, and is generally not achieved. At http://www.mare.ee/indrek/ephi...