On a sunny day (Thu, 01 Oct 2020 19:09:05 GMT) it happened Steve Wilson <spam@me.com> wrote in <XnsAC499A20C5FADidtokenpost@69.16.179.22>:>The most controversial form of lightning is >ball lightning. Ball lightning has never been observed >scientifically and many doubt its existence altogether. It is >reported to occur with or right after a nearby lightning stroke and >is described as a luminous ball of light that floats along fences, >rooftops, or through the open air. The jury is still out on ball >lightning. > >https://www.exploratorium.edu/ronh/weather/weather.htmlI have seen ball lightning face to face in my high-school years. One day, just after I placed an FM reception dipole on the neighbors roof, a big lightning storm started. Told him to disconnect the antenna, I was on the first floor, the other neighbor below us had a long wire antenna in his garden. I had the window open, looking at the lighting... After some bang a big white ball, about 30 cm or so in diameter, appeared and hung before the window. Looked at it face to face, from maybe about 1 meter distance, no heat coming from it. It hung there a few seconds, and then slowly started sinking and a load bang happened. Next morning went to look at the antenna in that garden, was between 2 trees, only 2 black burned ends were left, the ball evaporated it. Look up Murat Ozer electron black hole: https://arxiv.org/abs/gr-qc/9911011 I was almost a magic experience, sort of 'will it come to me or?' well, I take it as nature showing me something, plenty of discussions in sci.physics about that years ago.
Stepped Leader in Lightning
Started by ●October 1, 2020
Reply by ●October 2, 20202020-10-02
Reply by ●October 2, 20202020-10-02
PS that was in the days when we were experimenting to control things with our thoughts. Take it as sign to me perhaps, Had some experiences before that, this was a day or so after that. Everything is connected. We really know shit. :-)
Reply by ●October 2, 20202020-10-02
On Thursday, October 1, 2020 at 11:56:15 PM UTC-4, Steve Wilson wrote:> jlarkin@highlandsniptechnology.com wrote: > > > On Thu, 1 Oct 2020 19:22:56 -0700 (PDT), George Herold > > <ggherold@gmail.com> wrote: > > > >>On Thursday, October 1, 2020 at 4:58:33 PM UTC-4, whit3rd wrote: > >>> On Thursday, October 1, 2020 at 12:19:23 PM UTC-7, John Larkin > >>> wrote: > >>> > >>> > It's impressive that nobody understands lightning. > >>> > >>> Don't be silly! Avalanche in solids (like a Zener diode) or gasses > >>> (Geiger tubes, to name the old examples) are well-studied in a > >>> variety of materials and regimes. Nobel Prize 1992 went to Georges > >>> Charpak for this subject. > >>> > >>> Large scale and atmospheric chemistry are... minor details. > >> > >>Last I read there were/are uncertainties in the charge separation > >>mechanism. > >> > >>George H. > > > > The common phrase in the Wiki article on lightning is "For reasons not > > well understood,..." > > What article are you referring to?This looks OK. Many of the hits I got searching google were for papers from the 60-80's. http://www.phy.olemiss.edu/~jgladden/phys510/spring06/Gurevich.pdf George H.> > > The x-ray and gamma radiation from lightning aren't understood either. > > A great deal is understood about lighting, from high speed videos to > actual flights inside thunderstorms. A more generous term might be > "details are still being studied". See Wikipedia > > https://en.wikipedia.org/wiki/Lightning > > See Also > > https://en.wikipedia.org/wiki/Thunderstorm > > Thunderstorms and lightning are fascinating topics. As engineers, it > behooves us to learn as much as possible in order to minimize the > destructive effects of nearby strikes.
Reply by ●October 2, 20202020-10-02
Reply by ●October 2, 20202020-10-02
Am 01.10.20 um 22:58 schrieb whit3rd:> On Thursday, October 1, 2020 at 12:19:23 PM UTC-7, John Larkin wrote: > >> It's impressive that nobody understands lightning. > > Don't be silly! Avalanche in solids (like a Zener diode) or gasses (Geiger tubes, toAvalanche diodes are NOT Zener diodes. Prof. Zener even sued against his name being used for this. They settled to call them Z-Diodes and attribute it to the form of the curve.> name the old examples) are well-studied in a variety of materials and regimes. > Nobel Prize 1992 went to Georges Charpak for this subject. > > Large scale and atmospheric chemistry are... minor details. >Cheers, Gerhard
Reply by ●October 2, 20202020-10-02
On a sunny day (Fri, 2 Oct 2020 08:28:48 -0500) it happened John S <Sophi.2@invalid.org> wrote in <rl79uf$3d4$1@dont-email.me>:>On 10/2/2020 1:00 AM, Jan Panteltje wrote: >> PS > >> We really know shit. >> :-) > >But not much else.plonk
Reply by ●October 2, 20202020-10-02
On Friday, October 2, 2020 at 11:43:17 PM UTC+10, Gerhard Hoffmann wrote:> Am 01.10.20 um 22:58 schrieb whit3rd: > > On Thursday, October 1, 2020 at 12:19:23 PM UTC-7, John Larkin wrote: > > > >> It's impressive that nobody understands lightning. > > > > Don't be silly! Avalanche in solids (like a Zener diode) or gasses (Geiger tubes, to > > name the old examples) are well-studied in a variety of materials and regimes. > > Nobel Prize 1992 went to Georges Charpak for this subject.> Avalanche diodes are NOT Zener diodes.What are sold as "zener diodes" ranges from actual Zener diodes which have breakdown voltages below 5V to avalanche diodes which break down above this. Around 5V both mechanisms. are going on in parallel. Low voltage regulator diodes in which the Zener mechanism is dominant have a negative temperature coefficient, while higher voltage regulator diodes have a positive temperature coefficient, but if you want a low temperature coefficient regulator, a roughly 5.6V avalanche diode in series with a forward biassed diode - as in the 1N821 to 1N829 series - is the usual choice, giving you a distribution between 5.89V and 6.51V centered at about 6.2V at 7.5mA. If you want to get stability you pay for in a 1N829, you have to be very careful to keep the current very closes to 7.5mA> Prof. Zener even sued against his name being used for this. > They settled to call them Z-Diodes and attribute it to the form of the > curve.I don't think that anybody gets too excited about the name. <snip> -- Bill Sloman, Sydney
Reply by ●October 2, 20202020-10-02
On Fri, 2 Oct 2020 15:43:08 +0200, Gerhard Hoffmann <dk4xp@arcor.de> wrote:>Am 01.10.20 um 22:58 schrieb whit3rd: >> On Thursday, October 1, 2020 at 12:19:23 PM UTC-7, John Larkin wrote: >> >>> It's impressive that nobody understands lightning. >> >> Don't be silly! Avalanche in solids (like a Zener diode) or gasses (Geiger tubes, to > >Avalanche diodes are NOT Zener diodes.Everybody calls them zeners.>Prof. Zener even sued against his name being used for this. >They settled to call them Z-Diodes and attribute it to the form of the >curve.That sure didn't last long. -- John Larkin Highland Technology, Inc Science teaches us to doubt. Claude Bernard
Reply by ●October 2, 20202020-10-02
Am 02.10.20 um 17:48 schrieb jlarkin@highlandsniptechnology.com:> On Fri, 2 Oct 2020 15:43:08 +0200, Gerhard Hoffmann <dk4xp@arcor.de> > wrote: > >> Am 01.10.20 um 22:58 schrieb whit3rd: >>> On Thursday, October 1, 2020 at 12:19:23 PM UTC-7, John Larkin wrote: >>> >>>> It's impressive that nobody understands lightning. >>> >>> Don't be silly! Avalanche in solids (like a Zener diode) or gasses (Geiger tubes, to >> >> Avalanche diodes are NOT Zener diodes. > > Everybody calls them zeners. > > >> Prof. Zener even sued against his name being used for this. >> They settled to call them Z-Diodes and attribute it to the form of the >> curve. > > That sure didn't last long.Just a case of honesty. Does not fit into today's world. Gerhard
Reply by ●October 2, 20202020-10-02
On Fri, 2 Oct 2020 18:47:54 +0200, Gerhard Hoffmann <dk4xp@arcor.de> wrote:>Am 02.10.20 um 17:48 schrieb jlarkin@highlandsniptechnology.com: >> On Fri, 2 Oct 2020 15:43:08 +0200, Gerhard Hoffmann <dk4xp@arcor.de> >> wrote: >> >>> Am 01.10.20 um 22:58 schrieb whit3rd: >>>> On Thursday, October 1, 2020 at 12:19:23 PM UTC-7, John Larkin wrote: >>>> >>>>> It's impressive that nobody understands lightning. >>>> >>>> Don't be silly! Avalanche in solids (like a Zener diode) or gasses (Geiger tubes, to >>> >>> Avalanche diodes are NOT Zener diodes. >> >> Everybody calls them zeners. >> >> >>> Prof. Zener even sued against his name being used for this. >>> They settled to call them Z-Diodes and attribute it to the form of the >>> curve. >> >> That sure didn't last long. > >Just a case of honesty. Does not fit into today's world. > > >GerhardWhat should we call a 5.2v diode? Zenalanche? Avazar? Should Digikey have three catagories? -- John Larkin Highland Technology, Inc Science teaches us to doubt. Claude Bernard
