Search found 17 matches

by Jeff Mauldin
Wed Aug 29, 2012 5:54 pm
Forum: News
Topic: Scientific Irrationalism: Origins of a post-modern cult
Replies: 117
Views: 41221

Engineering, repeatable experiments, and the philosophy of s

"The cure to all this is engineering. Can you make an artifact from the knowledge base?" I have come to think this is very important to the "philosophy of science." It seems to me that every time something that has been engineered is used, that use is (besides being useful) a repeat of a repeatable ...
by Jeff Mauldin
Mon Nov 28, 2011 6:38 pm
Forum: News
Topic: Small update from Lawrenceville Plasma Physics
Replies: 131
Views: 57540

Boy would I like to have these problems...

It would be great if both FF and polywell work out so well that we really have to worry about the comparative economics of building and using focus fusion devices and polywells. Tis a consumation devoutly to be wished.
by Jeff Mauldin
Thu Nov 24, 2011 12:35 am
Forum: Theory
Topic: simulation: SC 2011, Gyrokinetic Toroidal Code (GTC)
Replies: 0
Views: 5070

simulation: SC 2011, Gyrokinetic Toroidal Code (GTC)

Last week I attended the 2011 SC conference. There were (at least) two papers that dealt with a 'production' supercomputer fusion simulation code known as GTC. my quick web serach (googling 'Gyrokinetic Toroidal Code'): http://www.nersc.gov/research-and-development/benchmarking-and-workload-characte...
by Jeff Mauldin
Tue May 10, 2011 4:10 pm
Forum: Design
Topic: tokamak-polywell hybrid fusor
Replies: 20
Views: 17350

...or maybe so. Momentum is conserved in a collsion, but not kinetic energy, right?
by Jeff Mauldin
Tue May 10, 2011 4:08 pm
Forum: Design
Topic: tokamak-polywell hybrid fusor
Replies: 20
Views: 17350

"...but due to the Lorentz force, the particles will tend to turn at right angles to the magnetic field, so some linear motion along the toroid length will tend to form and this will establish a direction which will cascade till most of the plasma has this behavior. It would be difficult and probabl...
by Jeff Mauldin
Mon May 09, 2011 5:52 pm
Forum: Design
Topic: tokamak-polywell hybrid fusor
Replies: 20
Views: 17350

Ah! Somebody else describes the idea better!

This description gives a much better quick understanding of an idea I posted a while back which didn't seem to attract any attention. I was trying to describe, I think, this same idea in a message I posted in February of 2008. http://www.talk-polywell.org/bb/viewtopic.php?t=584&postdays=0&postorder=...
by Jeff Mauldin
Tue Dec 07, 2010 7:15 pm
Forum: Theory
Topic: thread for segments files and parameters for simulation runs
Replies: 370
Views: 160436

Propagation time for electric and magnetic fields?

I have been thinking about this type of simulation, and I am mentally stuck on one thing: Are you accounting for the propagation of the magentic fields generated by the moving charges (and the electric fields associated with the moving charges) or are you assuming the propagation speed to be infinit...
by Jeff Mauldin
Wed Sep 15, 2010 9:24 pm
Forum: Design
Topic: Storage of Experimental Data
Replies: 2
Views: 10699

couch DB

some people at my work are experimenting with couch DB for dealing with datasets, results of algorithms run on datasets, etc. It's a RESTful database, and it provides reasonable structure with url access. It doesn't have the rigidity of a relational database and it gives more structure and ease of a...
by Jeff Mauldin
Mon Aug 23, 2010 10:41 pm
Forum: Theory
Topic: Measurable Polywell Fusion at low Voltages
Replies: 22
Views: 10680

Plasma vs. cloud of particles?

I'm going to reveal my ignorance here. When I think of the polywell, I think mostly in terms of particles, not plasma. I think of the magnetically shielded grid as a fairly constant environmental entity (a simplification which I realize can lead to trouble). I then visualize electrons moving around ...
by Jeff Mauldin
Mon Jul 26, 2010 6:09 pm
Forum: Design
Topic: Simulation Barriers
Replies: 16
Views: 13243

Possible supercomputer access, best software starting point

Due to recent (not entirely desired) career jumps, I have landed at an excellent spot in Sandia National Labs in Albuquerque. I'm a computer scientist (master's UNC-CH) with an EE/Math/CS Degree from Duke. Most of my career has been in data visualization, including a fair amount of supercomputer sim...
by Jeff Mauldin
Mon Jul 19, 2010 5:16 pm
Forum: News
Topic: Possible higgs discovery.
Replies: 34
Views: 12705

...and other revolution candidates.

I should also throw "modified gravity" theories into the contender list for future scientifc revolutions. There are probably others, but, as I implied in the last post, I'm just trying to throw this out there.
by Jeff Mauldin
Mon Jul 19, 2010 5:09 pm
Forum: News
Topic: Possible higgs discovery.
Replies: 34
Views: 12705

Scientific Revolutions

Last week I was reading some interesting stuff (likely familiar to many here) about Kuhn and his book about scientific revolutions. here's one line about it (a course outline from a professor at Emory) http://www.des.emory.edu/mfp/Kuhn.html Some key points related to this discussion seem to be: 1) N...
by Jeff Mauldin
Mon Jul 19, 2010 4:41 pm
Forum: News
Topic: Room-temperature superconductivity?
Replies: 1893
Views: 665247

Wired article is old...

That Wired article is from 2003. I haven't noticed diamond prices dipping noticeably in the past 7 years.
by Jeff Mauldin
Wed Mar 25, 2009 5:06 pm
Forum: Theory
Topic: Magnetic Monopoles
Replies: 10
Views: 6255

Using attractors to control chaotic systems...

Perhaps turbulence is a chaotic system, in the mathematical sense of "chaos." If so, it might be possible to "control" a turbulent system by finding an attractor which is beneficial, i.e. a situation where flow is smooth, and then figuring out how to supply inputs to keep the system in that attracto...
by Jeff Mauldin
Mon Jan 26, 2009 8:56 pm
Forum: News
Topic: Cold Fusion
Replies: 21
Views: 11682

Cold fusion real?

In Analog magazine, where I and I suspect others first came to know about IEC fusion through Tom Ligon's articles, Jeffrey Koostra penned an "Alternate View" column which basically took the position that cold fusion is now established as a phenomenon beyond all reasonable doubt, and also that it's d...