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text 2017-05-10 08:55
Reading progress update: I've read 93 out of 452 pages.
An Introduction to Magnetohydrodynamics - P.A. DAVIDSON,E.J. Hinch,S.H. Davis,Mark J. Ablowitz

"...efficient method of destroying energy." Anybody who's done school physics knows that's just plain wrong. In this case the rotational kinetic energy of the fluid is being converted to heat or at least to small scale turbulent flow (ultimately because the fluid is viscous). (The example is why the vortex you create by stirring a cup of tea disappears so fast when you remove the spoon!)

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text 2017-05-08 09:40
Reading progress update: I've read 63 out of 452 pages.
An Introduction to Magnetohydrodynamics - P.A. DAVIDSON,E.J. Hinch,S.H. Davis,Mark J. Ablowitz

Yep, gonna need to find a better book than this one.

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text 2017-04-27 09:31
Reading progress update: I've read 63 out of 452 pages.
An Introduction to Magnetohydrodynamics - P.A. DAVIDSON,E.J. Hinch,S.H. Davis,Mark J. Ablowitz

If I read "...a characteristic scale length, l," without any explanation of how to determine such a length in any specific case one more time, I am liable to scream. This isn't an isolated problem; undefined terms are popping up all over the place. The author also appears to have missed a subtle point about vorticity in fluid flows, namely it totals to zero even in a turbulent flow, unless there is external stirring.

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text 2017-04-19 09:02
Reading progress update: I've read 47 out of 452 pages.
An Introduction to Magnetohydrodynamics - P.A. DAVIDSON,E.J. Hinch,S.H. Davis,Mark J. Ablowitz I can't remember any other book deteriorating so rapidly from an excellent start...the issue (besides the typographical problems) seems to be that the author can give a good verbal description of what is going on but the mathematical presentation is awful. Even the verbal part is flawed by the use of undefined terms, however.
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text 2017-04-12 09:49
Reading progress update: I've read 31 out of 452 pages.
An Introduction to Magnetohydrodynamics - P.A. DAVIDSON,E.J. Hinch,S.H. Davis,Mark J. Ablowitz

OK, no; the "derivation" of the appropriate electrodynamic equations just states stuff without proof or any indication of how to proceed by oneself. That's crap textbook writing (but all too common).

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