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Then perhaps bc can do as much for me. If I arrange an air nozzle to discharge
between two coplanar plates from a central aperture, what is the direction
associated with the vector air velocity, and the vector air displacement?
I chose this as conceptually congruent with Moses's current mind experiment.
Brian Whatcott
At 01:46 AM 2/23/2006, Bernard Cleyet wrote:
I presume you mean discharge not by a wire connecting the concentric
spheres, but by a leaky dielectric. In which case you have "crystal
clarified" the discussion; thank you.
bc
Fayngold, Moses wrote:
It looks like the disagreement between John Denker and John Mallinckroftconcepts: current
has been caused by interchangeable use of the two different
and current density. Current (as a rate of charge transfer through aMallinckrodt
surface) is not a vector. This can be made crystal clear by considering,
say, electrical discharge of a spherical capacitor. We have non-zero
charge transfer with no direction to single out.
Current density is a vector, about which, I think, there is no
disagreement.
Moses Fayngold,
NJIT
-----Original Message-----
From: phys-l-bounces@carnot.physics.buffalo.edu on behalf of John
Sent: Tue 2/21/2006 12:37 PMcut
To: Forum for Physics Educators
Cc:
Subject: Re: [Phys-l] current vector
John Denker wrote:
On 2/21/06, John Mallinckrodt <ajm@csupomona.edu> wrote:
While it is true that the notion of current often--as when it flows
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Brian Whatcott Altus OK Eureka!
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