Re: Vacuum energy

[Alan Grayson]

On Saturday, April 18, 2020 at 9:40:45 PM UTC-6, Alan Grayson wrote:
>
> Does the Casimir effect establish that the vacuum has intrinsic energy, 
> and if so, what is its form? TIA, AG
>

A related question is this: if the vacuum energy is, in part, from the EM 
field, and forgetting about the wrong prediction from theory, what is the 
energy *form *if theory gives 1/2 photon for each frequency? AG 

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Vacuum energy

[Alan Grayson]

Does the Casimir effect establish that the vacuum has intrinsic energy, and 
if so, what is its form? TIA, AG

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Re: Question on spin

['Brent Meeker' via Everything List]

On 4/18/2020 3:24 PM, Alan Grayson wrote:



On Saturday, April 18, 2020 at 11:43:20 AM UTC-6, Brent wrote:

A W boson would be the only spin1 particle with a magnetic moment.
Since it has liftime of 3e-35 seconds I doubt anyone has sent W
bosons thru an SG; but in theory they should act just like silver
atoms or other particles with a magnetic moment.

Brent


Then why does Feynman have spin 1 particle responding to a magnetic 
field? Same question for Clark. 
https://www.feynmanlectures.caltech.edu/III_05.html . AG


He's probably referring to a spin 1 ATOM.

Brent

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Re: Question on spin

[Alan Grayson]

On Saturday, April 18, 2020 at 11:43:20 AM UTC-6, Brent wrote:
>
> A W boson would be the only spin1 particle with a magnetic moment.  Since 
> it has liftime of 3e-35 seconds I doubt anyone has sent W bosons thru an 
> SG; but in theory they should act just like silver atoms or other particles 
> with a magnetic moment.
>
> Brent
>
>
Then why does Feynman have spin 1 particle responding to a magnetic field? 
Same question for Clark.  
https://www.feynmanlectures.caltech.edu/III_05.html . AG


On 4/17/2020 11:56 PM, Alan Grayson wrote:
>
> What's the difference in behavior when a beam of spin 1 particles passes 
> through a SG device, compared to spin 1/2 particles? TIA, AG
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>  
> 
> .
>
>
>

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Re: Change of pace; question on WW1 history / LC?

[Alan Grayson]

On Saturday, April 18, 2020 at 11:09:57 AM UTC-6, Alan Grayson wrote:
>
>
>
> On Saturday, April 18, 2020 at 7:28:18 AM UTC-6, Lawrence Crowell wrote:
>>
>> The Russians had a pan-Slavic ideology, where all the Slavic regions of 
>> the world would be under the tutelage of Russia, This included much of the 
>> Austro-Hungarian empire, where this was a sore point. Bohemia, now the 
>> Czech Republic, Slovakia and areas formerly within Yugoslavia and prior to 
>> that within the Austro-Hungarian empire were intended to be a part of a 
>> greater pan-Slavic domain. This required by geography influence over 
>> Romania and Hungary. This was finally achieved by the USSR in the end of 
>> WWII.
>>
>> There was also something called the "Great Game," where Afghanistan the 
>> Hindu Kush and that general region was contested by Russia and the British 
>> Empire. The current problems with Kashmir is a carry over from this, where 
>> a Muslim majority region is a part of Hindustan India. This is an elevated 
>> region that in a sense looks over India, and was the staging area for the 
>> Mogul invasion of India. The UK was loathe to having Russia perched in that 
>> position over the "Jewel in the Crown" that was the British Raj in India.
>>
>> Then finally there is the middle east or the Ottoman Empire and Persia. 
>> Tsarist Russia hovered over these archaic and declining regions. Russia 
>> coveted the straits and a return of the "Truth Faith" of Orthodox 
>> Christianity to Constantinople, and this would give Russia more naval 
>> access. The Ottoman Empire was called the sick man of Europe, and the 
>> Crimean war was fought to keep Russia out of the straits of Dardanelles and 
>> Anatolia, and Russia worked to foster the disintegration of the Ottoman 
>> Empire. Russia also sought increased influence in Persia. 
>>
>> LC
>>
>
> I really appreciate having access to your command of history. One other 
> thing while we're on the subject of European history. What exactly is a 
> "Slav"? I once looked it up on Wiki and the definition or concept seemed 
> unintelligible; vague at best. AG
>

Offhand, I think a "Slav" is likely defined on religious grounds; that is, 
differentiated from other Christians as Roman Catholicism is differentiated 
from Greek, Ukrainian, and Russian Orthodoxy. But what is *that* difference 
if my basic assumption is sound? AG  

>
>> On Saturday, April 18, 2020 at 2:17:01 AM UTC-5, Alan Grayson wrote:
>>>
>>> As you probably know, Barbara Tuchman was awarded a Pulitzer prize for 
>>> The Guns of August (1962). In a later work, The Proud Tower (1966), focused 
>>> on European history in the two decades preceding WW1, she writes the 
>>> following in chapter 5 (emphasis mine);
>>>
>>> JOY, HOPE, SUSPICION—above all, astonishment—were the world’s prevailing 
>>> emotions when it learned on August 29, 1898, that the young Czar of Russia, 
>>> Nicholas II, had issued a call to the nations to join in a conference for 
>>> the limitation of armaments. All the capitals were taken by surprise by 
>>> what Le Temps called “this flash of lightning out of the North.” That the 
>>> call should come from the mighty and *ever expanding power* whom the 
>>> other nations feared and who was still regarded, despite its two hundred 
>>> years of European veneer, as semi-barbaric, was cause for dazed wonderment 
>>> liberally laced with distrust. *The pressure of Russian expansion had 
>>> been felt from Alaska to India, from Turkey to Poland.* “The Czar with 
>>> an olive branch,” it was said in Vienna, “that’s something new in history.” 
>>> But his invitation touched a chord aching to respond.
>>>
>>> What expansion is she referring to? TIA, AG
>>>
>>>
>>>

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Re: Question on spin

['Brent Meeker' via Everything List]

A W boson would be the only spin1 particle with a magnetic moment.  
Since it has liftime of 3e-35 seconds I doubt anyone has sent W bosons 
thru an SG; but in theory they should act just like silver atoms or 
other particles with a magnetic moment.


Brent

On 4/17/2020 11:56 PM, Alan Grayson wrote:
What's the difference in behavior when a beam of spin 1 particles 
passes through a SG device, compared to spin 1/2 particles? TIA, AG

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.


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Re: Question on spin

[John Clark]

On Sat, Apr 18, 2020 at 2:56 AM Alan Grayson  wrote:

*> What's the difference in behavior when a beam of spin 1 particles passes
> through a SG device, compared to spin 1/2 particles? TIA, AG*
>

A Stern–Gerlach device uses magnets to seperate out fermions like electrons
into beams of spin +1/2 and spin -1/2 particles, a SG device won't work for
a beam of boson such as photons. To do something comparable and separate
spin +1 photons from spin -1 photons you'd use a polarizing filter not a
magnet.

 John K Clark






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> .
>

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Re: Change of pace; question on WW1 history / LC?

[Alan Grayson]

On Saturday, April 18, 2020 at 7:28:18 AM UTC-6, Lawrence Crowell wrote:
>
> The Russians had a pan-Slavic ideology, where all the Slavic regions of 
> the world would be under the tutelage of Russia, This included much of the 
> Austro-Hungarian empire, where this was a sore point. Bohemia, now the 
> Czech Republic, Slovakia and areas formerly within Yugoslavia and prior to 
> that within the Austro-Hungarian empire were intended to be a part of a 
> greater pan-Slavic domain. This required by geography influence over 
> Romania and Hungary. This was finally achieved by the USSR in the end of 
> WWII.
>
> There was also something called the "Great Game," where Afghanistan the 
> Hindu Kush and that general region was contested by Russia and the British 
> Empire. The current problems with Kashmir is a carry over from this, where 
> a Muslim majority region is a part of Hindustan India. This is an elevated 
> region that in a sense looks over India, and was the staging area for the 
> Mogul invasion of India. The UK was loathe to having Russia perched in that 
> position over the "Jewel in the Crown" that was the British Raj in India.
>
> Then finally there is the middle east or the Ottoman Empire and Persia. 
> Tsarist Russia hovered over these archaic and declining regions. Russia 
> coveted the straits and a return of the "Truth Faith" of Orthodox 
> Christianity to Constantinople, and this would give Russia more naval 
> access. The Ottoman Empire was called the sick man of Europe, and the 
> Crimean war was fought to keep Russia out of the straits of Dardanelles and 
> Anatolia, and Russia worked to foster the disintegration of the Ottoman 
> Empire. Russia also sought increased influence in Persia. 
>
> LC
>

I really appreciate having access to your command of history. One other 
thing while we're on the subject of European history. What exactly is a 
"Slav"? I once looked it up on Wiki and the definition or concept seemed 
unintelligible; vague at best. AG

>
> On Saturday, April 18, 2020 at 2:17:01 AM UTC-5, Alan Grayson wrote:
>>
>> As you probably know, Barbara Tuchman was awarded a Pulitzer prize for 
>> The Guns of August (1962). In a later work, The Proud Tower (1966), focused 
>> on European history in the two decades preceding WW1, she writes the 
>> following in chapter 5 (emphasis mine);
>>
>> JOY, HOPE, SUSPICION—above all, astonishment—were the world’s prevailing 
>> emotions when it learned on August 29, 1898, that the young Czar of Russia, 
>> Nicholas II, had issued a call to the nations to join in a conference for 
>> the limitation of armaments. All the capitals were taken by surprise by 
>> what Le Temps called “this flash of lightning out of the North.” That the 
>> call should come from the mighty and *ever expanding power* whom the 
>> other nations feared and who was still regarded, despite its two hundred 
>> years of European veneer, as semi-barbaric, was cause for dazed wonderment 
>> liberally laced with distrust. *The pressure of Russian expansion had 
>> been felt from Alaska to India, from Turkey to Poland.* “The Czar with 
>> an olive branch,” it was said in Vienna, “that’s something new in history.” 
>> But his invitation touched a chord aching to respond.
>>
>> What expansion is she referring to? TIA, AG
>>
>>
>>

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Re: Change of pace; question on WW1 history / LC?

[Lawrence Crowell]

The Russians had a pan-Slavic ideology, where all the Slavic regions of the 
world would be under the tutelage of Russia, This included much of the 
Austro-Hungarian empire, where this was a sore point. Bohemia, now the 
Czech Republic, Slovakia and areas formerly within Yugoslavia and prior to 
that within the Austro-Hungarian empire were intended to be a part of a 
greater pan-Slavic domain. This required by geography influence over 
Romania and Hungary. This was finally achieved by the USSR in the end of 
WWII.

There was also something called the "Great Game," where Afghanistan the 
Hindu Kush and that general region was contested by Russia and the British 
Empire. The current problems with Kashmir is a carry over from this, where 
a Muslim majority region is a part of Hindustan India. This is an elevated 
region that in a sense looks over India, and was the staging area for the 
Mogul invasion of India. The UK was loathe to having Russia perched in that 
position over the "Jewel in the Crown" that was the British Raj in India.

Then finally there is the middle east or the Ottoman Empire and Persia. 
Tsarist Russia hovered over these archaic and declining regions. Russia 
coveted the straits and a return of the "Truth Faith" of Orthodox 
Christianity to Constantinople, and this would give Russia more naval 
access. The Ottoman Empire was called the sick man of Europe, and the 
Crimean war was fought to keep Russia out of the straits of Dardanelles and 
Anatolia, and Russia worked to foster the disintegration of the Ottoman 
Empire. Russia also sought increased influence in Persia. 

LC

On Saturday, April 18, 2020 at 2:17:01 AM UTC-5, Alan Grayson wrote:
>
> As you probably know, Barbara Tuchman was awarded a Pulitzer prize for The 
> Guns of August (1962). In a later work, The Proud Tower (1966), focused on 
> European history in the two decades preceding WW1, she writes the following 
> in chapter 5 (emphasis mine);
>
> JOY, HOPE, SUSPICION—above all, astonishment—were the world’s prevailing 
> emotions when it learned on August 29, 1898, that the young Czar of Russia, 
> Nicholas II, had issued a call to the nations to join in a conference for 
> the limitation of armaments. All the capitals were taken by surprise by 
> what Le Temps called “this flash of lightning out of the North.” That the 
> call should come from the mighty and *ever expanding power* whom the 
> other nations feared and who was still regarded, despite its two hundred 
> years of European veneer, as semi-barbaric, was cause for dazed wonderment 
> liberally laced with distrust. *The pressure of Russian expansion had 
> been felt from Alaska to India, from Turkey to Poland.* “The Czar with an 
> olive branch,” it was said in Vienna, “that’s something new in history.” 
> But his invitation touched a chord aching to respond.
>
> What expansion is she referring to? TIA, AG
>
>
>

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Change of pace; question on WW1 history / LC?

[Alan Grayson]

As you probably know, Barbara Tuchman was awarded a Pulitzer prize for The 
Guns of August (1962). In a later work, The Proud Tower (1966), focused on 
European history in the two decades preceding WW1, she writes the following 
in chapter 5 (emphasis mine);

JOY, HOPE, SUSPICION—above all, astonishment—were the world’s prevailing 
emotions when it learned on August 29, 1898, that the young Czar of Russia, 
Nicholas II, had issued a call to the nations to join in a conference for 
the limitation of armaments. All the capitals were taken by surprise by 
what Le Temps called “this flash of lightning out of the North.” That the 
call should come from the mighty and *ever expanding power* whom the other 
nations feared and who was still regarded, despite its two hundred years of 
European veneer, as semi-barbaric, was cause for dazed wonderment liberally 
laced with distrust. *The pressure of Russian expansion had been felt from 
Alaska to India, from Turkey to Poland.* “The Czar with an olive branch,” 
it was said in Vienna, “that’s something new in history.” But his 
invitation touched a chord aching to respond.

What expansion is she referring to? TIA, AG


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