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From: David Brown <david.brown@hesbynett.no>
Newsgroups: comp.arch
Subject: Re: Is Intel exceptionally unsuccessful as an architecture designer?
Date: Tue, 24 Sep 2024 08:17:30 +0200
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On 24/09/2024 03:00, Lawrence D'Oliveiro wrote:
> On Mon, 23 Sep 2024 10:38:40 -0000 (UTC), Thomas Koenig wrote:
> 
>> (Among thers, he left out turbulence, where we have some understanding,
>> but do not yet understand the Navier-Stokes equations - one of the
>> Millenium Problems).
> 
> I thought the problem with Navier-Stokes is that it assumes
> infinitesimally-small particles of fluid, whereas we know that real fluids
> are made up of atoms and molecules.
> 
> Remember how Max Planck solved the black-body problem? He knew all about
> the previous approach of assuming that matter was made up of little
> oscillators, and then trying to work out the limiting behaviour as the
> size of those oscillators approached zero -- that didn’t work. So his
> breakthrough was in assuming that the oscillators did *not* approach zero
> in size, but had some minimum nonzero size. Et voilà ... he got a curve
> that actually matched the known behaviour of radiating bodies. And laid
> one of the foundation stones of quantum theory in the process.
> 
> Seems a similar thing could be done with Navier-Stokes ... ?

Without knowing the history of work on Navier-Stokes, I am /reasonably/ 
confident that mathematicians have thought about this and tried it.