Date: Thu Oct 30 15:31:47 2008 Back to Contents

Author: Wolfgang Rueckner

Subject: Re: displacement current

Post:

Bogus in the sense that (at the time) it was not convincing beyond
reasonable doubt that we were detecting the displacement current.



On Oct 30, 2008, at 1:19 PM, Richard Berg wrote:

> Wolf,
>
> Bogus in what sense?
>
> Dick
>
> On Thu, 30 Oct 2008, Wolfgang Rueckner wrote:
>
>> I once tried it, and the results were bogus -- Wolfgang
>>
>>
>>
>> On Oct 30, 2008, at 11:38 AM, chuck britton wrote:
>>
>>> so you are saying that Dick's straightforward with clear results
>>> is bogus??
>>> Why would a toroidal iron core be needed?
>>> If Dick's demo had faraday shielding around the plates - would it
>>> still show results? - would it be more satisfactory to the ney-
>>> sayers?
>>> More discussion on this would be appreciated (i.e. I'm too lazy
>>> to do the research)
>>> On Oct 30, 2008, at Oct 30(Thu) 11:17 , Zani, Gerald wrote:
>>>> Read Dick Bergís page:
>>>> http://www.physics.umd.edu/deptinfo/facilities/lecdem/services/
>>>> demos/demosk2/k2-63.htm
>>>> Iíve never had luck with this demo for two reasons. It is
>>>> tricky to do correctly. And when I do get it working the
>>>> Faculty are not theoretically convinced that the signal is any
>>>> different from an RF antenna signal.
>>>> 1.) To do it the pick-up coil must be a many turns iron core
>>>> Toriod.
>>>> 2.) The AC signal on the cap plates should be of high
>>>> frequency. One handy, free way to get a very high frequency
>>>> signal is to get an old VCR player, play a video tape and take
>>>> the RF signal output out the back. RF modulators with a 4 MHz
>>>> bandwidth are commonly found built into old VCRs
>>
>>
>
> **********************************************************************
> *
> Dr. Richard E. Berg, Professor of the Practice
> Director, Physics Lecture-Demonstration Facility
> U.S. mail address:
> Department of Physics
> University of Maryland
> College Park, MD 20742-4111
> Phone: (301) 405-5994
> FAX: (301) 314-9525
> e-mail reberg@umd.edu
> www.physics.umd.edu/lecdem
> **********************************************************************
> *



From tap-l-owner@lists.ncsu.edu Thu Oct 30 15:31:47 2008

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