Re: SA's latest issue

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Antonio Carlos M. de Queiroz by way of Terry Fritz <twftesla-at-uswest-dot-net>" <acmq-at-compuland-dot-com.br>

Tesla list wrote:
> 
> Original poster: "Oxandale, Terry by way of Terry Fritz
<twftesla-at-uswest-dot-net>" <Toxandale-at-SPP-dot-org>
> 
> Revisted from a 1901 February issue of Scientific American (100 years
> ago today):

By that time, the Scientific American was far more interesting than 
today...

>...
> Mr. Tesla, however, manipulates his recently discovered
> 'stationary electrical waves in the earth' by setting up ' vibratory
> currents which can be transmitted through the terrestrial globe, just as
> through a wire, to the greatest distances' ".
> 
> Amazing, 100 years and still.......

Signal transmission through the Earth is used in many systems today.
The lower the frequency, the better waves propagate trough the Earth.
Not practical for high data rates, however, because of the low carrier
frequency. Marconi made the first signal transmission across the
Atlantic in 1901 with a transmitter that essentially was a high-power
Tesla transformer connected to a huge antenna.
The radio systems studied by Tesla were in no aspect different from
what Marconi and others were studying by that time. 

Antonio Carlos M. de Queiroz