Re: Uncertainty principle and an elementary exercise with logs

["Michael N. Monce" <mnmon@conncoll.edu>]

On Wed, 9 Sep 1998, JACK L. URETSKY (C)1998; HEP DIVISION, ARGONNE NATIONAL LAB ARGONNE, IL 60439 wrote:

> Hi all-
> 	This deals with two different unrelated topics.
> 1.  Anyone teaching QM at any level should see the News and Views article
> by Peter Knight, "Where the Weirdness Comes from" in Nature for 3 Sept
> 1998, p. 12.  Knight discusses an experimental determination that
> Heisenberg's explanation of measurement disturbances is incorrect.  That
> is, in the two slit experiment, it is not the momentum kick from
> observing which path was followed by a particle that destroys the
> interference pattern.  The correct view is given by Schroedinger's
> entangled state approach.
> 	The point appears to be that QM is the physics of coherence,
> and QM effects go away once coherence is destroyed.


	this week's Science News also has a description of the
experiment recently done on this entanglement.  


				Mike Monce
				Connecticut College