Search found 79 matches

by pstudier
Sun Mar 22, 2009 7:53 pm
Forum: General
Topic: Which design will be the first to break even?
Replies: 15
Views: 3102

joedead wrote:Over 100 views and only 9 votes. Was this a dumb idea for a poll?


Well, there should have been an option for fusion never to be commercially successful.
by pstudier
Thu Mar 19, 2009 10:40 pm
Forum: Theory
Topic: The Beginnings of a F.A.Q.
Replies: 24
Views: 6184

PESwiki explicitly allows original research, seehttp://peswiki.com/index.php/PESWiki:Original_research
by pstudier
Thu Mar 19, 2009 10:15 pm
Forum: Theory
Topic: The Beginnings of a F.A.Q.
Replies: 24
Views: 6184

I administer http://libertarianwiki.org and administration is a real pain. Why don't you check out http://peswiki.com ?
by pstudier
Tue Jan 27, 2009 5:33 am
Forum: News
Topic: MgB SC Improvements
Replies: 8
Views: 2533

So liquid H is cheaper than He? Just out of curiousity, how do they compare with LN2? I have no idea what LH costs. I have seen estimates of $4 a kg. produced. Sales at low volume would probably be double that. It boils at about 20K. Its density is about .071 kg/l. It takes 50 KWh to produce a kg o...
by pstudier
Sun Jan 25, 2009 7:10 am
Forum: News
Topic: MgB SC Improvements
Replies: 8
Views: 2533

JohnP wrote:Why is 25K+ so important? Does it have to do with liquid neon vs liquid helium?


My guess is that it allows the use of hydrogen, which boils at 20.28K. Neon is expensive.
by pstudier
Fri Nov 14, 2008 3:33 am
Forum: News
Topic: Hyperion?
Replies: 41
Views: 11065

Update (November 12, 2008): --snip-- “Hyperion Power Generation is in the early stages of development of this design, and very little testing information is available for this design concept. --snip-- To put things in perspective from a regulatory viewpoint, there is a licensed interim storage faci...
by pstudier
Tue Nov 11, 2008 2:54 am
Forum: Implications
Topic: Fusion Generators, or peak oil and another Great Depression?
Replies: 18
Views: 6584

The villagers will shut down all carbon based fuels, and not allow nuclear either. Kind of hard to run a civilized society on renewables. So I am pessimistic.
by pstudier
Fri Sep 26, 2008 9:44 pm
Forum: General
Topic: Chinese Say They're Building 'Impossible' Space Drive
Replies: 19
Views: 8790

kcdodd wrote:And not only breaking conservation of momentum, but also the 2nd law of thermodynamics.


How does this break the 2nd law, which states that entropy increases? Electricity in, allegedly some of this energy is converted to motion, and most of the energy is converted to heat.
by pstudier
Fri Sep 26, 2008 12:45 am
Forum: General
Topic: Chinese Say They're Building 'Impossible' Space Drive
Replies: 19
Views: 8790

In spite of their double talk about frames of reference, this still violates conservation of momentum. Draw a box around the system and ignore what is inside. Nothing comes out, except a little heat. Without some outlet for the momentum, there can be no thrust. Here is a paper which uses a different...
by pstudier
Mon Sep 15, 2008 10:34 pm
Forum: General
Topic: Focus Fusion
Replies: 7
Views: 2495

Read this article by Jan S. Brzosko. http://www.physicsessays.com/doc/s2007/PF50-7-_03_07-CurrentTrends-bk.pdf From page 25, the best shot is the blue line with 50kJ of energy. With D-D, this gave about 9e10 neutrons. Multiply by 2 fusions/neutron * 2.7 MeV /fusion * 1.6e-13 J/Mev, we get 0.78 Joul...
by pstudier
Mon Sep 15, 2008 4:01 am
Forum: General
Topic: Focus Fusion
Replies: 7
Views: 2495

Smells like BS to me. It is advocated by Eric Lerner of Lawrenceville Plasma Physics, Inc., see http://www.lawrencevilleplasmaphysics.com . The wikipedia page http://en.wikipedia.org/wiki/Eric_Lerner mentions that he does not believe in the big bang and has its own theory of cosmology. Google maps i...
by pstudier
Thu Jul 31, 2008 11:05 pm
Forum: News
Topic: More EEStor news
Replies: 40
Views: 14055

Good points, Joe! Has anyone outside the company seen a sample capacitor?
by pstudier
Fri Jul 11, 2008 4:02 am
Forum: Theory
Topic: Where's the beef?
Replies: 132
Views: 31972

Re: What will it take?

Dr Carlson, from what you know about the WB-7 right now, do you believe it could produce results that would convince you that it was worth spending ~$200M attempting to build a net power device? Not just for scientific discovery, but specifically because you thought net power just might be possible...
by pstudier
Thu Jul 10, 2008 11:21 pm
Forum: Theory
Topic: All that can go wrong with recirculation
Replies: 112
Views: 28501

The available descriptions of polywell operation are neither complete nor consistent. Some explanations contradict other explanations or the laws of physics. We're just trying to find a description that could describe a working machine. This has also been a source of frustration to me. See http://w...
by pstudier
Tue Jul 01, 2008 2:24 am
Forum: Theory
Topic: Carlson and Nebel
Replies: 108
Views: 38573

At 10 keV? I don't have the specific voltage for that model, but the website says typically they are 80-180 Kev. They are simple accelerators with metal hydride targets, so it is much more likely that the accelerated hydrogen hits the metal rather than the hydrogen in the target. Of course, there i...

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