Re: Physics of Wireless Transmission

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: <davep@xxxxxxxx>

> Original poster: "Gary Peterson" <gary@xxxxxxxxxxxx>
>
> Langer,
>
> After reading "Electric Waves" by J.J. Thomson I
> retract my assertion that the term "electric
> wave" is synonymous with "electromagnetic
> radiation.  On page 207, § 9. Waves in Wires,
> Thompson discusses apparatus for investigating
> "electric waves along wires."  (View the page at
> http://www.newscotland1398.net/radio40/encybrit1911v09p207.html
> .)  The term "electric wave" is actually
> synonymous with "electromagnetic wave."
    Is it?
    8)>>

    My impressions:
    1) Usage, expecially in popularizations is a little loose.

    2) There CAN BE 'pure electric waves'.
       (variation in e field)

    3) These transform, over relatively short diatances
       (cf Maxwell??) into the most common form, which
       is the electromagnetic wave.

    best
     dwp