Mark, please note I have design experience in electromagnetics (postgrad degree in EE machine design) so as I said excepted DC (in common electrical engineering parlance that is the non-time varying portion) and possibly some very attenuated low frequency (<100's of Hz) EM my point remains. Rossi is (to me worryingly) needlessly obfuscating/preventing measurement of voltage current and so power in resistive heaters, because they do no more than supply heat to the reactor, there is no other magic in what they contribute.
Many here would do well to spend a minute or two reading up on the simple concept of AC EM field exclusion via "skin effect" http://en.wikipedia.org/wiki/Skin_effect On 24 May 2013 22:18, MarkI-ZeroPoint <zeropo...@charter.net> wrote: > Mr. Lynn,**** > > You’re a bit too quick on the trigger…**** > > ** ** > > Let me repeat myself, a **magnetic** field WILL penetrate most austenitic > stainless steels.**** > > ** ** > > However, I know that a static mag-field is not the same as the magnetic > component of an oscillating EM field, so I called a colleague who worked > for Varian for 40 years, and who has a lot of magnetics expertise. He said > that static, and possibly VLF, magnetic fields will penetrate nonmagnetic > stainless steels, but that the magnetic component of EM waves of any > significant frequency will probably not.**** > > ** ** > > Another consideration, and I think this was mentioned in the Collective > two (or was it three) years ago right after Rossi’s first January > demonstration, is that when the electrical resistance heaters are energized > (with DC), they will generate a mag-fld around them. This can probably be > considered a static mag-field, and will likely penetrate the non-magnetic > 310 stainless cylinder, so the internal core of the reactor may very well > feel this PWM-modulated field.**** > > ** ** > > -Mark Iverson**** > > ** ** > > *From:* Robert Lynn [mailto:robert.gulliver.l...@gmail.com] > *Sent:* Friday, May 24, 2013 10:57 AM > *To:* vortex-l@eskimo.com > *Subject:* Re: [Vo]:Why did Rossi prevent detailed measurement of the > power input?**** > > ** ** > > To repeat myself, there will be no significant em field penetrating the > reactor. So don't try to fool yourself that there is some special secret > about using em fields to instigate or promote the reaction, also Rossi has > claimed in past to have it running using gas heating. Rossi's setup only > allows for heat to get in. The skin depth of the 3mm thick SS vessel will > exclude all fields above probably about 100-200Hz entirely, and will > greatly attenuate lower frequencies as well (DC would get through) but the > surrounding magnetic fields in the resistors themselves are very weak > anyway. (not that many turns). **** > > ** ** > > If he wanted or needed magnetic fields to penetrate the reactor then he > would not be using spiral wound resistors arrayed around the reactor > vessel, he would have a coil wound around the reactor vessel.**** > > ** ** > > As such preventing measurement of current and voltage through the heating > resistors looks very suspicious - as there is nothing there to be sensibly > hidden if we take him at his word.**** > > ** ** > > On 24 May 2013 17:56, Jones Beene <jone...@pacbell.net> wrote:**** > > Looks like Dardik’s superwave tech is an application – not a granted patent > **** > > **** > > > http://www.google.com/patents/US20080316782?dq=energetics+dardik&ei=LJufUbHwM8XsiwLe5oDgDg&cl=en > **** > > **** > > **** > > Mark,**** > > **** > > In the end – it looks to me like the secrecy about the wave-from was > probably due to similarity to the Energetics patent and not a “trade > secret” per se; and that Rossi is using the magnetic properties of the > waveform to stimulate the nickel powder, which is itself ferromagnetic. ** > ** > > **** > > Would you agree?**** > > **** > > SS spec sheet:**** > > **** > > > http://www.northamericanstainless.com/wp-content/uploads/2010/10/Grade-310S-314.pdf > **** > > **** > > **** > > **** > > *From:* MarkI-ZeroPoint **** > > **** > > “It is possible that RF would pass through these ceramics, no?”**** > > Yes, more than likely that RF could pass thru a ceramic, however, if > electrically conductive, then probably not. **** > > **** > > An E or B field will most likely go thru the ceramics, but the reactor > vessel is stainless steel:**** > > **** > > “The most important element of the E-Cat HT was lodged inside > the structure. **** > > It consisted of an AISI 310 steel cylinder, 3 mm thick and 33 mm in > diameter, housing the powder **** > > charges. Two AISI 316 steel cone-shaped caps were hot-hammered > in the cylinder, sealing it **** > > hermetically. Cap adherence was obtained by exploiting the higher thermal > expansion coefficient **** > > of AISI 316 with respect to AISI 310 steel.”**** > > **** > > End caps are made of 316 due to greater coef of thermal expansion:**** > > 310: 15.5x10-6**** > > 316: 16.5x10-6**** > > **** > > For our noninvasive glucose sensor, we used a Ni-plated soft iron housing > which acts as both a faraday cage to shield outside EM, and to complete a > magnetic flux circuit which channels the flux from internal permanent mags. > **** > > **** > > Since stainless is only about 50% Fe, a mag fld should penetrate it, but > due to its electrical conductivity, an E-fld would not. In that case, is > he using magnetic properties to help control the reaction? Is it causing > alignment of grains, or forcing dipole oscillations to be aligned?**** > > **** > > -Mark**** > > **** > > **** > > *From:* Jones Beene **** > > **** > > Robert Lynn wrote:**** > > **** > > And all of the resistive heating elements are positioned around it, so > they do nothing but deliver heat to the reactor contents - no special > magnetic or electrical excitation can pass through the reactor vessel. ** > ** > > **** > > There is still confusion on that point. From Forbes article: **** > > **** > > > http://www.forbes.com/sites/markgibbs/2013/05/20/finally-independent-testing-of-rossis-e-cat-cold-fusion-device-maybe-the-world-will-change-after-all/ > **** > > **** > > They described the E-Cat HT as a cylinder having a silicon nitride ceramic > outer shell, 33 cm in length, and 10 cm in diameter. A second cylinder made > of a different ceramic material (corundum) was located within the shell... > **** > > **** > > It is possible that RF would pass through these ceramics, no?**** > > ** ** >
