Search found 78 matches
- Tue Feb 11, 2014 3:33 am
- Forum: News
- Topic: 2014 Dark Horse Trifecta Year?
- Replies: 101
- Views: 64382
Re: 2014 Dark Horse Trifecta Year?
... So, although the triple product is an excellent metric, it would seem to me it is useful only if resolution of the down stream issues are believable ... The triple product only says anything about the physics, not the engineering feasibility. It is almost certain that the first few generations ...
- Fri Jan 24, 2014 2:16 am
- Forum: News
- Topic: 10KW LENR demonstrator (new thread)
- Replies: 6351
- Views: 2169379
- Thu Jan 23, 2014 4:12 am
- Forum: News
- Topic: 10KW LENR demonstrator (new thread)
- Replies: 6351
- Views: 2169379
Re: 10KW LENR demonstrator (new thread)
Poe's LawAxil wrote:...
- Tue Jan 14, 2014 1:40 am
- Forum: Theory
- Topic: A question about vacuum chambers
- Replies: 7
- Views: 5769
Re: A question about vacuum chambers
I have never had personal experience with anyone using dry helium to backfill. However, helium is a standard tool to check for leaks. It is a small atom that easily squeezes through cracks. It is also generally not found naturally in atmosphere making it a good 'tracer'. So, you bleed bits of He aro...
- Tue Jan 14, 2014 1:13 am
- Forum: Theory
- Topic: A question about vacuum chambers
- Replies: 7
- Views: 5769
Re: A question about vacuum chambers
... Anyway, IIRC the reason to back fill is to dry out the chamber. ... This is the correct answer. At a molecular level, water, nitrogen, oxygen,and other things stick to most surfaces. You don't notice this every day because this is a very small amount, a few atoms thick. This is called adsorptio...
- Sun Jan 12, 2014 5:09 pm
- Forum: News
- Topic: 20 years away, and always will be
- Replies: 137
- Views: 55132
Re: 20 years away, and always will be
Yes, you're correct. I was sloppy with the use of the term 'ignition'. It is not strictly required for net gain, Q>1. An IEC style device would never reach ignition (nor would it need to).
- Thu Jan 09, 2014 2:07 am
- Forum: Implications
- Topic: First tier, second tier
- Replies: 21
- Views: 30710
Re: First tier, second tier
earning how tub-boat asteroids into lunar orbits for the purpose of exploration and mining That *is* wild! And surprising. It implies a lack of confidence in terrestrial sources, including under-sea sources. Maybe the space boys (and girls) will come up with something brilliant (a ore-capacity spac...
- Thu Jan 09, 2014 1:16 am
- Forum: News
- Topic: 20 years away, and always will be
- Replies: 137
- Views: 55132
Re: 20 years away, and always will be
...Something similar may be true for NiF and others getting government money -- they tell their story to the government, not investors... This is very much the case. 90% of science is obtaining funding. Still... I prefer to think the scientists behind the predictions of breakeven are sincere. These...
- Wed Jan 08, 2014 2:52 am
- Forum: Implications
- Topic: First tier, second tier
- Replies: 21
- Views: 30710
Re: First tier, second tier
...But quality of metal ores has been in decline for literally thousands of years. ... NASA and private industry are learning how to tug-boat asteroids into lunar orbits for the purpose of exploration and mining. also, lhttp://www.nasa.gov/content/new-nasa-mission-to-help-us-learn-how-to-mine-aster...
- Wed Jan 08, 2014 2:02 am
- Forum: News
- Topic: 20 years away, and always will be
- Replies: 137
- Views: 55132
Re: 20 years away, and always will be
...when it break-even fusion? There is a minimum density, temperature, and confinement time needed for ignition (Q>=1) for a given reaction. TFTR has demonstrated these points independently, but never simultaneously. JET has demonstrated Q=.75 with actual DT at about 15MW. JT-60 has demonstrated co...
- Tue Jan 07, 2014 3:35 am
- Forum: News
- Topic: 20 years away, and always will be
- Replies: 137
- Views: 55132
- Wed Jan 01, 2014 6:53 pm
- Forum: Theory
- Topic: particle simulation using fast multiple method
- Replies: 45
- Views: 28616
Re: particle simulation using fast multiple method
Here are the most basic tests for confirming your B-field is working correctly with particles. Define a uniform B-field and send off a single particle with a known velocity. If everything is correct, you will get a circular orbit. Check for -Constant radius -Plane of orbit perpendicular to both fiel...
- Wed Jan 01, 2014 1:11 am
- Forum: Theory
- Topic: particle simulation using fast multiple method
- Replies: 45
- Views: 28616
Re: particle simulation using fast multiple method
i'm working on testing the magnetic fields now. not nearly as easy to verify as electric fields... I mean that if you get your magnetic fields working, run something simple like a cylindrical solenoid. Let us know the dimensions etc. and I'll run the same problem on established modeling software so...
- Tue Dec 31, 2013 3:14 am
- Forum: Theory
- Topic: particle simulation using fast multiple method
- Replies: 45
- Views: 28616
Re: particle simulation using fast multiple method
If you wanted to do some trivial magnetic geometries, I could benchmark your results against some established software.
- Tue Dec 31, 2013 2:04 am
- Forum: Theory
- Topic: plasma density in magnetic bottle
- Replies: 12
- Views: 13076
Re: plasma density in magnetic bottle
EDIT: apparently this forum doesn't parse latex, see attached for compiled version Plasma resistivity is given fundamentally by \vec{E} + \vec{V} X \vec{B}= \eta*\vec{j} where E is the vector electric field, V is the velocity vector, B is the vector electric field, eta is the resistivity, and j is ...