Search found 825 matches
- Fri May 06, 2011 12:55 pm
- Forum: News
- Topic: 10KW LENR Demonstrator?
- Replies: 3678
- Views: 1360710
I posted the following question on his blog two days back. It appears to have been rejected by the moderator. [...] Chris Bradley Your comment is awaiting moderation. May 4th, 2011 at 6:00 PM Why do you not run a ‘null’ test before your demonstrations – for example, i) why do you not heat the syste...
- Thu May 05, 2011 7:39 pm
- Forum: News
- Topic: 10KW LENR Demonstrator?
- Replies: 3678
- Views: 1360710
It's most likely not real. I've been following via friends in Italy and there are too many holes. Here's a good site which lists many of the possible scams: http://lenr.qumbu.com/ Many are still possible. The key here is the physics is not patentable. If they have new physics, there is no reason to ...
- Sat Sep 12, 2009 5:33 pm
- Forum: News
- Topic: EMC2 Gets $8 million
- Replies: 98
- Views: 67553
- Fri Sep 11, 2009 10:05 pm
- Forum: Theory
- Topic: HPC modeling
- Replies: 2
- Views: 4791
HPC modeling
I ran across this by accident today: arxiv.org/pdf/0908.4362 "The performance results show that CUDA is an attractive parallel computing environment for MHD simulations." This is similar to the theory we need to model for Polywell, and can be taken as proof of principle. I also priced a 4 Terraflop ...
- Fri Jul 24, 2009 3:26 am
- Forum: News
- Topic: Amateur fusioneers.
- Replies: 12
- Views: 10542
Early bombs were called fission-fusion-fission bombs, because they worked that way. The U-238 wasn't transmuted, it was directly fissioned by the different kind of neutron put out by the fusion reaction--I can't remember how exactly all that worked. modern "clean" weapons place a greater focus on t...
- Sun Jun 28, 2009 1:29 pm
- Forum: Theory
- Topic: Virtual Polywell
- Replies: 468
- Views: 224576
I'll have to get that from work - at home I don't have xcell. If it's direct numerical integration, should be fine. The problem with blowing things up is that it takes time to replace the parts. :D I mostly have to deal with life this summer, so it will be a long time before I can really have some f...
- Tue Jun 23, 2009 11:47 pm
- Forum: Theory
- Topic: Virtual Polywell
- Replies: 468
- Views: 224576
A little over a year ago Tombo asked about a straight wire configuration, and I posted some math that figured out the field for it. I had the opportunity to actually use that in my day job, and what I found was that my starting point was slightly wrong, so that while I got the units right, I had don...
- Sat Jun 06, 2009 2:30 pm
- Forum: Theory
- Topic: Do Thermal Neutrons Irradiate Their Shielding Water?
- Replies: 16
- Views: 14326
On a submarine you use one heat exchanger to prevent radiation from getting into your turbines, on a normal plant you use two heat exchangers for safety. You can go direct and gain efficiency, but you lose big on the radiation damage to your turbines. The impurities in the water absorb the neutrons ...
- Mon May 18, 2009 12:58 pm
- Forum: Design
- Topic: Numerical Simulation of a Polywell
- Replies: 41
- Views: 44817
To accurately simulate is really difficult. Every model that does not follow 1e23 particles with 1e-12 second precision must have approximations - right now 1e15 flops is pretty darn good. We need 1e34 to simulate perfection, and that isn't going to happen in the next 20 years. There are many good m...
- Tue Feb 10, 2009 4:33 am
- Forum: Theory
- Topic: Recirculation revisited
- Replies: 37
- Views: 30550
Another view is to look at back emf. Every time you try to push current against a field, the field pushes back on the current. In a plasma, you can do that to the point where all the current is on the surface and all the field is on the surface too. The plasma inside doesn't see any external field b...
- Fri Jan 30, 2009 1:23 am
- Forum: Awareness
- Topic: Polywell@home?
- Replies: 2
- Views: 8461
Yes, we discussed that a while back. It's a great idea, but we first need to know which model to use. The Vlasov solver is a choice, but it is not the only one. In a sense it is a chicken and egg problem - without some real data, we don't know which model makes the most sense, and without a bunch of...
- Fri Jan 30, 2009 1:13 am
- Forum: Theory
- Topic: Vlasov Solver [work in progress]
- Replies: 86
- Views: 60019
And if you really want to go nuts, check out the Journal of Geometry and Physics.
Clifford Algebras and Manifolds are also good things to look into. N dimensional spaces seem complicated, but they tie a lot of complexity together for better understanding overall.
Clifford Algebras and Manifolds are also good things to look into. N dimensional spaces seem complicated, but they tie a lot of complexity together for better understanding overall.
- Sun Jan 25, 2009 11:59 pm
- Forum: Theory
- Topic: Vlasov Solver [work in progress]
- Replies: 86
- Views: 60019
Thanks for the pointer to the quaternian paper. There's a typo in equation 14. The + in front of the v/c^2 should be a - (and that is consistent with the rest of that section). The end of section 3 is kind of dubious to me. The authors use the same vector potential to represent two different things,...
- Sun Jan 25, 2009 11:30 pm
- Forum: News
- Topic: Open Science Journals - Physics
- Replies: 2
- Views: 5707
- Sat Jan 10, 2009 2:02 pm
- Forum: General
- Topic: Media "Control" of the Elections?
- Replies: 328
- Views: 160230