Sherrill actually, you'll find (as I did 15 years ago) math is the more
elegant and precise way of explaining electronics theory....usually no more
difficult than high school trig. /k6sdw
-----Original Message-----
From: Sherrill WATKINS [mailto:SEWATKINS@dgs.state.va.us]
Sent: Wednesday, October 18, 2000 1:03 PM
To: tacquire@earthlink.net
Cc: tentec@contesting.com
Subject: Re: [TenTec] electron flow vs. current flow
Fascinating! However, the more I read about electrical theory the less I
know and the more confused I become. Will someone please explain in
common english and without math just how the flow of electric current
through the ground causes a gas pipeline to corrode?? ( Next we will tackle
how a lightning strike is a complete circuit?) - Thank's- sherrill k4own
>>> Dan <tacquire@earthlink.net> 10/18/00 03:52PM >>>
In reality lightning is a complete loop like any circuit. Don't know if
this has been mentioned here before or not but there is even positive and
negative lightning,, so named because of where it initiates, positive earth
to negative clouds or the other way around. In other words whether or not it
starts from the clounds goes to earth and comes back, or starts from earth
goes to clouds and comes back.
Neat stuff anyway :)
Sherrill WATKINS wrote:
> Actually, I believe it was Benjamin Franklin who postulated in about circa
1750 that electricity flows because of an attraction from positive to
negative poles. Also, it was Franklin that postulated the theory (correct)
that lightning is the flow of electric charges and therefore offered the
first scientific explanation that lightning is the flow of electricity.
Franklin also postulated correctly that lightning will favor an attraction
to a point over a sphere or flat surface and from this he correctly
developed the theory of the lightning rod, now called the "air terminal".
However, my cathodic protection engineer friend is adamant that current
flows from positive to negative. - sherrill k4own
>
> >>> "Dan Cox" <tacquire@earthlink.net> 10/18/00 02:43PM >>>
> hehe, it's really amazing that the myth ever got started. Supposedly it
was
> easier around the turn of the century to explain electricity if you
> explained it in the reverse of how it actually works.. Imagine these
> people's confusion when they started learning about vacuum tubes for
> instance! The logic just DOES NOT work!!
>
> ----- Original Message -----
> From: "Sherrill WATKINS" <SEWATKINS@dgs.state.va.us>
> To: <tentec@contesting.com>
> Sent: Wednesday, October 18, 2000 10:47 AM
> Subject: [TenTec] electron flow vs. current flow
>
> >
> > A friend of mine, who is a cathodic protection engineer, states that in
> the cathodic (corrosion) protection business, he installs sacrificial
> anodes on buried gas piplines to protect against corrosion. He also
states
> that current flows from the positive to the negative pole but electrons
> flow from the negative to the positive pole! - Sherrill k4own
> >
> >
> > --
> > FAQ on WWW: http://www.contesting.com/FAQ/tentec
> > Submissions: tentec@contesting.com
> > Administrative requests: tentec-REQUEST@contesting.com
> > Problems: owner-tentec@contesting.com
> >
> >
--
FAQ on WWW: http://www.contesting.com/FAQ/tentec
Submissions: tentec@contesting.com
Administrative requests: tentec-REQUEST@contesting.com
Problems: owner-tentec@contesting.com
--
FAQ on WWW: http://www.contesting.com/FAQ/tentec
Submissions: tentec@contesting.com
Administrative requests: tentec-REQUEST@contesting.com
Problems: owner-tentec@contesting.com
--
FAQ on WWW: http://www.contesting.com/FAQ/tentec
Submissions: tentec@contesting.com
Administrative requests: tentec-REQUEST@contesting.com
Problems: owner-tentec@contesting.com
|