The Dupuyer acantha. [volume] (Dupuyer, Mont.) 1894-1904, 1895-03-16
TELEGRArHY WITHOUT WIRES.
Using the Earth MS the Conductor OF
Electric vibration.

80 INK 1f0 US kaS
| Electric vibration.
The promise of coming electrical
achievement more marvellous than all
that has preceded it is III the air.
Electricians who have been admitted
to witness recent experiments in the
laboratory of Nikola Tesla have come
away fully impressed with the belief
that the new wizard has within his
| grasp the solution of the problem or
transmitting intelligence and power
| without the use of wires. Tesla mas
long maintained that this could be
done. He declared in a public address
| two years ago that his conviction had
grown so strong on that point that he
no longer looked on this plan of en-
ergy or intelligence transmission as a
mere theoretical possibility, but ifs a
elious problem in electrical engineer
ing which must be carried out some
day. He has been working at the
problem ever since, and The invention
of his Observation-Disclosures to be an
epoch-making machine in the pr)duc-
ton of power-has been merely an in
cident in his patient, scientific search
for the period" Of the electrical charge
of the earth.
1t is on the existence of this charge
that the possibility depends of con-
veying intelligence without the aid OF
wires and without respect to tie tis-
lance. Mr.. Tesla demonstrated some
ten years ago that the earth could be
used a. a conductor of electric vibra-
ton, instead Of the return wire lcng
held to be Indispensable. His single
wire motors gave that fact, and led
to the further conclusion that it WAS
not necessary to have even d ST Gle
connection between the motor and sen
orator, except, perhaps, through the
ground. But to utilize electric energy
given off into space or transmit ID
"ough the ground Is a problem some
at different from hat Of procuring
ut any point of the earth a response
to the disturbance of rs electric charge
at some other point. The one turns
on the question Of l w good All cleo
trio conductor the eartn may be shown
to be, the other on how nearly it is
possible to ascertain at what period
the earth's charge Of electricity ost1l-
lates with respect to an oppositely
electrified system or known circuit.
The scientific basis of the theory
that the earth is an electrically charged
body insulated in space is to be found
in the accepted view Of its origin
that, namely, Of mechanical separation
from other bodies. But the impo .tant
| question was to discover what quantity
Of electricity the earth contains-What,
in scientific language, is it's capacity,
and what Is the period of vibration?s
On the answer to that depends the
| possibility Of disturbing the elecrfo@
| static condition of the earth so as to
transmit Ineligible signals to any dis
lance simply through the earth itself
." its environing medium. Mr.. Tesla
succeeded IL raising that POSSIBLE
ity to the rank of Il probability, if not
Of n certainty. He has pumped cleo
| tricity into the earth, and has secured
resonance" so powerful as to manifest
| itself in lightning flashes Of considera-
BILE length and vividness. In other
words, he has been able to get a re-
| spouse through the electrical vibration
| which he has impressed on the earth
| from the electric charge which 1T dis
turbed there. The two must, therefore,
have something in common; must have
a certain degree Of rhythmical CORE
spondence however wide of complete
accord. They must not touch more
closely than would the units which go
to make up 1000 and 100000 if the
former were distributed over a line
formed by the units which go to make
UP the latter. But as in this case one
in 100 would touch, and the whole be
covered at certain fixed intervals, so
Mr.. Tesla's experiments have led him
far enough to show that he has hit
upon some harmonic correspondence
ween the known and the unknown
80. cult. When he has succeed ed IN
bringing them into anything like per-
feet accord, he will be able, by a gentle
electric tap, to send a note vibrating
over the whole face Of the earth, as II
it lay before him like the frightened
skin of a drum.-Roston Herald.