Re: about phase and frequency

From: Bjoern Feuerbacher (feuerbac_at_thphys.uni-heidelberg.de)
Date: 02/25/05 

Date: Fri, 25 Feb 2005 12:33:41 +0100

Androcles wrote:
> "operator jay" <none@none.none> wrote in message
> news:qAaTd.24515$Ka6.172304@news1.mts.net...
>
>>"Androcles" <Androcles@ MyPlace.org> wrote in message
>>news:hQ4Td.166177$B8.70055@fe3.news.blueyonder.co.uk...
>>
>>>"Bjoern Feuerbacher" <feuerbac@thphys.uni-heidelberg.de> wrote in
>>>message news:cvie0n$sml$1@news.urz.uni-heidelberg.de...
>>>
>>>>According to what you wrote just above, it lags it by pi.
>>>
>>>Yep. I blundered. Accepted.
>>>The magnetic field is x = A.sin(wt + 0)
>>>The electric field is y = A.sin(wt + pi/2)
>>>
>>>Androcles.
>>>
>>>
>>>
>>
>>You accept that the phase is not 180, but you don't accept that the
>>phase is
>>zero?
>
>
> Between the B and E fields?
> It's 90 degrees, or pi/2.

Wrong.

> E = -dB/dt -- Faraday, taken by Maxwell into his own suite.

Faraday's law is *not* E = -dB/dt.

> http://hyperphysics.phy-astr.gsu.edu/hbase/electric/maxeq.html#c2
> http://hyperphysics.phy-astr.gsu.edu/hbase/electric/farlaw.html#c1

Indeed. Now, where do you see "E = -dB/dt" in those two pages?

>>"Bjoern Feuerbacher" <feuerbac@thphys.uni-heidelberg.de> wrote in
>>message
>>news:cvie0n$sml$1@news.urz.uni-heidelberg.de...
>>
>>>And in fact, in an electromagnetic wave, the electric and
>>>magnetic field are *in phase*. They don't lag with respect
>>>to each other.
>>
>>j
>
>
> IN FACT, Feuerbacher is an uneducated fuckwit that cannot solve
> Faraday's differential equation, or he wouldn't be saying anything
> so stupid.

IN FACT, Androcles is an uneducated fuckwit who does not even know
Faraday's equation, nor can read (since he does not recognize that
the pages he himself cites contradict him).

Bye,
Bjoern

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