https://www.youtube.com/watch?v=O5jo9P4-gH4


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On Sat, 24 Nov 2012 02:17:44 -0500, "Tom Del Rosso"
wrote:


https://www.youtube.com/watch?v=O5jo9P4-gH4

It will be interesting to see what everyone says.

Basically semantics about where the "winding" is. Note that he indicates
0.9V - (-0.1V) = 1V for the total loop voltage; Kirchoff isn't violated if
the EMF is placed symbolically somewhere in the loop. Where doesn't matter,
and in reality, it will be evenly distributed (of course, we don't have
non-Laplacian fields, either, so there will be a nonzero amount in the
voltmeter loops as well).

Calling it "nonintuitive" is silly. There is nothing nonintuitive about
Maxwell's equations (at least until you start throwing nonlinear materials
around). E&M is *easy*.

The people I really feel bad for are the people involved in any fluids:
aerodynamics, fluid mechanics, hydraulics, etc. The Navier-Stokes equations
can be linearly approximated in only a limited set of cases -- small
Reynolds number. Any real, interesting and useful application is hopelessly
difficult to analyze, and, until recently, was mostly confined to empirical
data (this flow through this roughness of pipe requires so-and-so pressure
drop) and trial-and-error experiments. They tried, what, hundreds of
combustion chamber designs on the Saturn V rocket before they found one that
didn't KATO? Nowadays, these systems can be simulated, at huge
computational expense, still involving many turbulence and scale-related
approximations to try to optimize the process, but the development of models
is still largely dependent on the user.

Tim

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"Tom Del Rosso" wrote in message
...

https://www.youtube.com/watch?v=O5jo9P4-gH4


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On 11/24/2012 12:45 PM, Tim Williams wrote:

Calling it "nonintuitive" is silly. There is nothing nonintuitive about
Maxwell's equations (at least until you start throwing nonlinear
materials around). E&M is *easy*.

Tim

Sometimes profs like to hype their lessons so the students don't drift
off :-)

Tom Del Rosso wrote:


https://www.youtube.com/watch?v=O5jo9P4-gH4


Assume that there is a loop with R1, R2 in a uniform increasing magnetic
field. And assume that points A and D are selected on either side of the
loop such that the integral(dL) through each half of the loop are the same.

I think you will see 0.4V on each voltmeter.

Kirchoff's Law still holds if you model the induced E in the loop as
distributed voltage sources depending on integral(dL).

--
Paul Hovnanian
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