If he does not know such a simple thing, I think he can be safely ignored as plainly he is significantly ignorant of basic physics.
Only toroidal coils/cores have negligible external detectable field. And actually it is present but cancelled, hence only detected inductively. Very long solenoids have a strong external field near the poles but is weaker near the middle. John On Sat, Jun 1, 2013 at 1:52 AM, David Roberson <dlrober...@aol.com> wrote: > I suggest that you study the magnetic fields associated with solenoids > Josh. Obviously you must not realize that they have an external field much > like a bar magnet. This is simple for you to study and realize your > mistake. > > Dave > > > -----Original Message----- > From: Joshua Cude <joshua.c...@gmail.com> > To: vortex-l <vortex-l@eskimo.com> > Sent: Fri, May 31, 2013 3:32 am > Subject: Re: [Vo]:new hypothesis to confute regarding input energy in Ecat > test > > On Thu, May 30, 2013 at 7:32 PM, Berke Durak <berke.du...@gmail.com>wrote: > >> On Thu, May 30, 2013 at 1:38 PM, Joshua Cude <joshua.c...@gmail.com> >> wrote: >> >> > I don't buy it. The reactor is a sealed faraday cage, so it's not going >> to >> > care about ripple or dc vs ac. It's just a thermal interface. >> >> The reactor might require or might be incompatible with low-frequency AC >> magnetic fields, which can go through 3 mm of steel, especially AISI 310 >> steel which has very low magnetic permeability. (Faraday cages bounce off >> electromagnetic signals (balanced E + B) but not necessarily penetrating >> magnetic signals.) >> >> > Good grief. The resistors are coils, presumably helical solenoids with > the axis parallel to the reactor cylinder. The magnetic field is near zero > outside a solenoid, except at the ends. Not the best way to get magnetic > fields in. Moreover, the Ni is above the Curie point at those temperatures, > and so is not ferro-magnetic. But it's a real reach anyway to think you > could even measure magnetic fields, let alone induce nuclear reactions with > them. And some say the skeptics are grasping. > > > >> In addition we are told the instantaneous power was about 930 W. If >> unfiltered, >> full-wave rectified AC was used then in 10 ms, that 930 W will supply or >> fail to >> supply about 10 J. As this is metal here and not water the thermal >> masses are >> pretty low: for the steel casing which has a thermal mass of about .15 J/K >> this would mean a change of 1.5 degree, 100 times per second. With a >> diffusivity of .36 m2/s this 100 Hz thermal signal would certainly >> reach the core. >> >> > What? No! What are you smoking? > > Do you notice how tungsten light bulbs glow for a fraction of a second > after you turn them off? That's thermal mass. Photographers measure the > flicker of tungsten lights, and it's less than 10%. Now, the visible light > output is far from linear, with a threshold at near full power, so that > means there's probably even less variation in the thermal output over the > cycle. And that's a tiny filament. For the heating resistors, it would be > even less. And now imagine if the heating resistor varies its thermal > output by a per cent or less, and if only a fraction of the heat from the > resistor reaches the SS cylinder, which has a mass of 1.5 kg (probably a > thousand times that of a tungsten filament, and 4 times the heat capacity). > There is no way any temperature ripple would be observed in the steel, let > alone reach the core. You need to go back to that heat equation. > > > >> >> > But in any case, in the dummy run, they measured the power to the ecat >> so that >> > suggests it's an ordinary ac signal. Anyway, a box powered by ordinary >> mains >> > can produce any signal shape they want. They wouldn't go to 3-phase >> just to >> > skimp on diodes and capacitors. The 3-phase looks more like obfuscation >> to me. >> >> Again, if they need to have precise PWM without a large 100 Hz ripple, >> they will >> have to produce high-power DC, and they will want it to be reliable. >> It's not >> just a matter of "skimping" on capacitors. >> >> > > They measured the power to the ecat on the lines going in to the ecat > using clamp on meters in the December run, and in the dummy run in March. > So it's ac at the line frequency; the meter has a narrow frequency range. > And in March it's single phase ac. There's no reason they need high power > dc. > > > >> >> As a side node, the use of tri-phase power seems to indicates that >> this is the real >> deal. Why would indeed Rossi bother with that if he didn't have a true >> need to >> industrialize his product? >> > > > So, in the end you admit that it's not needed for this purpose, and that > it's a bother. Why bother? I explained that. It forces the use of a > specific mains line that will not be used for anything else. It increases > the complexity, which gives much opportunity for deception. And it makes > much higher power available, in case he wants to make it glow. > > >>
