On 5/31/2023 3:21 PM, Arindam Banerjee wrote:
> On Wednesday, 31 May 2023 at 15:48:49 UTC+10, Volney wrote:
>> On 5/30/2023 9:56 PM, Arindam Banerjee wrote:
>>>>>> Arindam, tell us again why there is zero pressure at the center of the Earth, and it is very cold there.
>>>>>
>>>>> Tell me if you have heard of the Earth's magnetic field, and why do you think that happens.
>>>>>
>>>> Tell us why you think the only possible explanation of the magnetic
>>>> fields is a cold superconducting core.
>>>
>>> Because a steady magnetic field is created by a current as was found out generations ago.
>> I asked why it was the only explanation.
>>> So far there is no other way to create a steady magnetic field without a continuously circulating steady current.
>> What about a regular bar magnet?
> All bar magnets are from continuously circulating steady currents within them, accounting for their magnetism.
And what is your evidence for that? How can I stick an ammeter into a
bar magnet and measure its current?
Also, is a bar magnet a superconductor? Yes or no.
And you never answered this:
> Why you think the only possible explanation of the magnetic fields is a cold superconducting core.
> When heated these currents get disturbed and the magnetism goes away.
That's a pretty trivial proof that the cores of planets and suns cannot
be superconductors (or even iron magnets; see Curie temperature).
> Superconducting current loops, well beyond the scope of disturbance by humans, are inevitable when the core is cold iron,
Iron isn't a superconductor.
>> The key words are "so far". If nature is doing things we can't do it
>> doesn't mean nature isn't doing those things!
>>
>> Besides, plasma can generate powerful magnetic fields, but this is
>> something I know little about.
>
> Plasma is an ionic state of matter, gaseous. So, irrelevant in the context of solid cores, hot or otherwise.
It is perfectly fine for stars with extremely high temperatures in their
cores.
As to planets, about all I know that under the extreme pressures and
temperatures of the earth's core, the iron that's there isn't the stuff
we're familiar with.
>> For the sun, any useful theory has to explain the powerful local
>> magnetic fields associated with solar prominences, sunspots, solar
>> flares and so forth.
No answer?
>> Again you seem to not be able to understand the difference between
>> gravitational force, gravitational potential and the cumulative weight
>> (= force) of all the matter from the core outward.
>>
>> It doesn't surprise me, you aren't even smart enough to understand the
>> binary star's light reaching the telescope.
>
> "Though vanquished, it will argue still". Repeating lies do not make them true.
If you know that repeating lies doesn't make them true, why do you
always lie so much here?