Dear Dave

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Andromache

A few questions:

What is the value of the Reynolds stress?

Are there really ∞ twin primes?

Given the rise of the Yuan against the USD, what role the SDR play in the global durable goods currency market?

Thanks.
 
Dave

Dave

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Dear Crone,

Obviously you are doing this to show me how dumb I am. It worked. But I'll give them a shot.

1) What is the value of Reynolds stress?

As you are aware, Reynolds stress is the stress tensor in a fluid due to the random and turbulent fluctuations in fluid momentum. (Definition from wikipedia and a number of scientific journals.) The value, then, is in its likening to a the kinetic theory of gases in that it allows us to identify the isotropic pressure part (turbulent pressure). The Reynolds stress has been very good at predictions in fluid dynamics.

I hope that answers your question because I don't know what the fuck I just said. It was heavily paraphrased from several journals.

2) Are there really ∞ twin primes?

Of course. I'm not sure why we care, but there are many twin primes. (3,5), (5,7), (11,13) just to name a few. In fact, there are 808,675,888,577,436 twin prime pairs under 10^18. There are formulas which can figure these out so I won't go into it. But yes, there are. If they do end before infinity I'm not going to try and figure it out.

3) Given the rise of the Yuan against the USD, what role the SDR play in the global durable goods currency market?

The devaluation of the USD agianst the world market may very well spell an end to the United States as an economic superpower unless something is done. The fact that the Yuan is rising as fast as it is tends to be a sign of either China's dominance in the world market rearing its head or the turning of attentions to something more stable that the USD. The problem lies in the main question of whether the Yuan is truly that strong or if the currency manipulations of the Chinese government. The SDR is treading a very fine line when it comes to the devaluation of the major trading currency in the world. If they were to switch the focus from the USD to either the Euro (which has been bandied about) or the Yuan, the very move itself may cause such a stir in the world market that if the currency switched to is not the real deal it could cause unimaginable harm. I think that unless the Yuan is shown to be a truly stable currency and not just a tool of their government that it could very well be the next world currency.
 
Dave

Dave

Staff member
#1 was totally cribbed from other places, #2 was something I knew but had to look up to make sure and #3 was all me, baby!
 
fade

fade

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Hey, Reynold's Transport Theorem. Not a bad recitation. It applies to any medium that's functionally a continuum, though--not just fluids. Works pretty well on solid rock elastically stressed by seismic waves.
 
A

Andromache

Dear Dave:
How should I explain LQG within the constraints of Hawking's entropy and the Immirzi parameter to a four year old?

Thank you.
 
Dave

Dave

Staff member
Crone said:
Dear Dave:
How should I explain LQG within the constraints of Hawking's entropy and the Immirzi parameter to a four year old?

Thank you.
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Dear Crone,

Not sure why you'd want to do this. At the fourth year of development the average child is able to count to 20 and sequence events. I doubt you could even begin to parse down things like string theory or black hole thermodynamics as they wouldn't have even the barest concept as an underpinning understanding.

I would probably say, "Ask your mother."
 
A

Andromache

Dear Dave, do you realize how confusing "Ask your Mother?" sounds in my house?
 
Dave

Dave

Staff member
Crone said:
Dear Dave, do you realize how confusing "Ask your Mother?" sounds in my house?
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Yes. But I also assume that the child grew up in that environment and when one says, "Ask your mother" he or she knows what you are talking about. Probably not as confusing as most think it is.
 
A

Andromache

Dave;354613][QUOTE=Crone said:
Dear Dave, do you realize how confusing "Ask your Mother?" sounds in my house?
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Yes. But I also assume that the child grew up in that environment and when one says, "Ask your mother" he or she knows what you are talking about. Probably not as confusing as most think it is.[/QUOTE]

well if he can grasp that insane twist of logic then why not string theory, which is far easier?
 
Null

Null

Yes, but does String Theory mean anything? Last time I saw anything about String Theory it was about how the model wasn't congruent with observed phenomena, I think.
 
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fade

Staff member
Lying Bastard said:
Yes, but does String Theory mean anything? Last time I saw anything about String Theory it was about how the model wasn't congruent with observed phenomena, I think.
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The problem with string theory isn't necessary lack of congruence so much as a lack of observability at all. It treads the line between science and fact-based spec fiction because it's more or less untestable. We can barely test subatomic particles, much less the idea that subatomic particles are actually just differently resonant strings vibrating in multiple dimensions.
 
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