What is offered on Aliexpress is standard size small lamp.

I need large plasma lamp to model sunspots on the sun.

https://www.aliexpress.com/w/wholesale-plasma-lamp.html

On Thursday, 26 January 2023 at 02:52:15 UTC+1, a a wrote:
> What is offered on Aliexpress is standard size small lamp.
>
> I need large plasma lamp to model sunspots on the sun.
>
> https://www.aliexpress.com/w/wholesale-plasma-lamp.html
https://www.aliexpress.com/item/4000015798116.html

On Wednesday, January 25, 2023 at 8:52:15 PM UTC-5, a a wrote:
> What is offered on Aliexpress is standard size small lamp.
>
> I need large plasma lamp to model sunspots on the sun.
>
> https://www.aliexpress.com/w/wholesale-plasma-lamp.html

And just exactly how does a plasma globe model sunspots?

On Thursday, 26 January 2023 at 03:05:08 UTC+1, Fred Bloggs wrote:
> On Wednesday, January 25, 2023 at 8:52:15 PM UTC-5, a a wrote:
> > What is offered on Aliexpress is standard size small lamp.
> >
> > I need large plasma lamp to model sunspots on the sun.
> >
> > https://www.aliexpress.com/w/wholesale-plasma-lamp.html
> And just exactly how does a plasma globe model sunspots?
Plasma globe is intended for tests how magnetic field can control plasma.

Next step is plasma torch ( high power plasma burner), controlled by magnetic field, fed with mixture of gases to generate dense plasma strings.

I test how Kirlian photography can be controlled in magnetic field.

so step by step approach to build functional model of the sunspot

On 26/01/2023 02:43, Anthony William Sloman wrote:
> On Thursday, January 26, 2023 at 1:17:44 PM UTC+11, a a wrote:
>> On Thursday, 26 January 2023 at 03:05:08 UTC+1, Fred Bloggs wrote:
>>> On Wednesday, January 25, 2023 at 8:52:15 PM UTC-5, a a wrote:
>>>> What is offered on Aliexpress is standard size small lamp.
>>>>
>>>> I need large plasma lamp to model sunspots on the sun.
>>>>
>>>> https://www.aliexpress.com/w/wholesale-plasma-lamp.html
>>> And just exactly how does a plasma globe model sunspots?
>>
>> Plasma globe is intended for tests how magnetic field can control
>> plasma.
>
> Magnetic fields can't control plasmas. They can influence them, if
> there is current circulating in the plasma, but a couple of decades
> of nuclear fusion research, where electric currents are induced to
> flow through a plasma, has produced a lot of examples where the
> magnetic field didn't have the desired effect.

It isn't so much that as obtaining a magnetic field that is strong
enough and can be changed quickly to confine a high pressure dense
plasma that is undergoing fusion. Sustained fusion in the lab remains
very elusive despite being "only 50 years away" for more than 50 years.

Magnetic fields and beam wigglers routinely control fast plasma beams to
obtain stimulated emissions. The whole of mass spectrometry is down to
magnetic fields controlling plasmas (although it is only really a true
plasma with serious ion beam current in the calutrons).

The construction of them at Oak Ridge has some interesting tales when
they decided to substitute copper then in short supply with silver.

https://en.wikipedia.org/wiki/Calutron#Construction

The nicest way to bend an ion beam is with a uniform magnetic field.

>> Next step is plasma torch ( high power plasma burner), controlled
>> by magnetic field, fed with mixture of gases to generate dense
>> plasma strings.
>
> So a a is going to re-invent the lumpy roller.
>
>> I test how Kirlian photography can be controlled in magnetic
>> field.
>
> It can't. The currents are too low and the voltages too high for a
> magnetic field to a have any effect.
>
>> so step by step approach to build functional model of the sunspot.
>
> More a drunkards walk. This "first step" is clearly in the wrong
> direction, and is starting off from the wrong place.

If he is serious then the best analogue models to date are molten sodium
between counter rotating spheres in a near uniform magnetic field. The
experimentalists have done quite well with this setup at obtaining some
of the right characteristics of self sustaining dynamo oscillations. eg.

https://www.academia.edu/47326010/Hydromagnetic_turbulent_instability_in_liquid_sodium_experiments

I can't immediately find the more recent stuff, but ISTR Lynden-Bell did
some theoretical work backed up by experiments a decade? ago.

--
Martin Brown