Search found 869 matches

by rjaypeters
Tue Sep 13, 2011 10:57 am
Forum: General
Topic: Models Suitable for Display
Replies: 154
Views: 47107

At your service...
by rjaypeters
Tue Sep 13, 2011 1:39 am
Forum: General
Topic: Models Suitable for Display
Replies: 154
Views: 47107

@raypeters: another idea: had you thought already of constructing your previous most excellent (printed?) geoid designs out of transparent plastic, then fill each cell with a simple noble gas mix (depending upon the 'shell') and fit each cell with a simple anode/cathode/electrical feed through. No,...
by rjaypeters
Mon Sep 12, 2011 12:37 am
Forum: General
Topic: Models Suitable for Display
Replies: 154
Views: 47107

Something simpler to build for Proof of Concept, inscribed on a tetrahedron:

Image
by rjaypeters
Sun Sep 11, 2011 10:38 pm
Forum: General
Topic: Models Suitable for Display
Replies: 154
Views: 47107

Submitted for ladajo's consideration: http://i1178.photobucket.com/albums/x367/Robert_Peters/Single_Coil_Cubic_Trmtrc.jpg and with zip-ties to hold the corners together: http://i1178.photobucket.com/albums/x367/Robert_Peters/Single_Coil_Cubic_Ties_Trmtrc.jpg I expect if enough current is running it ...
by rjaypeters
Sun Sep 11, 2011 12:09 pm
Forum: General
Topic: Models Suitable for Display
Replies: 154
Views: 47107

"Re: QA - Your Shapeways Order No. 60881 - Useless Statistics Jan, When my model left your facility, it had 196 polishing stones inside. About five fell out on the way here and I removed the other 191 stones. Eight are the cylindrical stones with the remainder of triangular cross-section. I finally ...
by rjaypeters
Fri Sep 09, 2011 10:38 pm
Forum: General
Topic: Models Suitable for Display
Replies: 154
Views: 47107

A single-coil approach might be helpful:

Image

I assume you're not using that hard-to-bend SC cable.
by rjaypeters
Fri Sep 09, 2011 9:01 am
Forum: General
Topic: Models Suitable for Display
Replies: 154
Views: 47107

Edmund Scientific has a mini battery-powered plasma ball for $13: http://www.scientificsonline.com/mini-plasma-ball.html I could imagine how the plasma would be induced to remain looking like a Wiffleball. One could cheat and touch the glass with suitably conductive rods or maybe magnetic fields wou...
by rjaypeters
Fri Sep 09, 2011 8:57 am
Forum: General
Topic: Models Suitable for Display
Replies: 154
Views: 47107

rcain wrote:...has anyone considered 'pimping' a cheaply available 'plasma ball...
Yes, you have. :) Seriously, it is a great idea.

Some purist is going to complain the plasma isn't the same temperature as a working Polywell! :D
by rjaypeters
Wed Sep 07, 2011 11:13 pm
Forum: General
Topic: Models Suitable for Display
Replies: 154
Views: 47107

The white Wiffleball arrived today, packed full of tiny polishing stones (some had gotten out of the ball during shipping). The Wiffleball is undamaged (AFAIK), so they probably reprinted it anyway.

Perhaps they care about their reputation for quality work. Imagine.
by rjaypeters
Wed Sep 07, 2011 11:08 pm
Forum: Design
Topic: Sapphire fiber for superconductors
Replies: 23
Views: 17237

From whom have heard about that before? :D
by rjaypeters
Wed Sep 07, 2011 11:07 pm
Forum: News
Topic: R. Nebel at 53rd APS Plasma Physics meeting
Replies: 140
Views: 84890

There are plenty of dedicated lawn chair area 51 watchers that would do it for free, no? I'd worry about their conspicuity. A private detective, well, a good one, would be more discreet.:) I think all we want to know is Dr. Park still going to work at a certain address in San Diego. A good, lazy de...
by rjaypeters
Wed Sep 07, 2011 1:56 am
Forum: General
Topic: Models Suitable for Display
Replies: 154
Views: 47107

The immediately above are too heavy, so added lightness, but I couldn't simplicate...

I call these multi-layered:

Image

Image
by rjaypeters
Wed Sep 07, 2011 12:35 am
Forum: News
Topic: R. Nebel at 53rd APS Plasma Physics meeting
Replies: 140
Views: 84890

Even if the WB-8 tests have been more successful than we hope, the USN will take a lot of time figuring out what to do. ladajo points out the difficulty of taking the program black, let alone the deciding how to proceed with the program as a more regular development. Does anyone know what Dr. Park i...
by rjaypeters
Mon Sep 05, 2011 9:21 pm
Forum: General
Topic: Models Suitable for Display
Replies: 154
Views: 47107

Thanks. Fastprotos.com looks good, if a little behind Shapeways because fastprotos.com uses a manual quote process and many fewer material options. It is nice to see a spec sheet for their plastic's material properties, though.
by rjaypeters
Mon Sep 05, 2011 1:07 pm
Forum: General
Topic: Models Suitable for Display
Replies: 154
Views: 47107

I'd really like to build some of these: Implied spherical core: http://i1178.photobucket.com/albums/x367/Robert_Peters/Nested_Bottom.jpg http://i1178.photobucket.com/albums/x367/Robert_Peters/Nested_Bottom_1_Middle.jpg http://i1178.photobucket.com/albums/x367/Robert_Peters/Nested_Bottom_2_Middle.jpg...