The evening times. [volume] (Grand Forks, N.D.) 1906-1914, 1906-02-17

covered that disruptice electrical dis
charges cause waves to radiate
through the ether with the velocity Of
light, i.e., 10000 miles second. Tie
apparatus Hertz employed fulfilled
the conditions of signaling through
space without wires; but many i'm
provements were needed before an eff
Gent system could be produced, cap
able of operating on commercial
scale. In 1890 Branly of Paris invent
ed an improvement on the metallic
ring receiver of Hertz. and called by
him a radio conductor, which was
much more sensitive to enfeebled cleo
trio waves impinging upon it.
Popoff of Russia, combined with p
coherer, as Branly's detector had been
renamed, an electric pell, the ham,
mer of which also served as Taper
to decohere the filings. This with
other additions was an advance in re-
ceiving. In 1895 Marconi of Italy be-
gan his experiments with. view to
long distance transmission. The re-
ceiver used by Marconi in connection
with his transmitter was very like that
of Popoff, except that he added
Morse register and adjusted the
mechanism to imprint dots and dashes,
in accordance with the signals trans
.mitted.
In 1897 Lee DeForest began expert
menting on new lines, his object be-
Ing to produce a receiver which would
overcome the faults of the Brandy
Popof- Marconi type, which had been
found not to be commercially practi-
cal, especially in receiving messages
on land.
DeForest worked with an electricity
tic detector and obtained an instru-
ment very sensitive, which is known
as an Elestrolytic and Anti-Coherer
receiver, operated upon principles dis
covered by DR.. DeForest and protected
by basic patents. This fact gives the
DeForest system speed of transmits
sion two or three times as great as
the various coherer systems, greater
sensitiveness permitting longer dis
lance of communication, and unequal
ed freedom from atmospheric disturb
ances, insuring regular uninterrupted
communication at all seasons of the
year, both over land and over water.
DeForest's system surpasses all the
systems of wireless telegraphy on ac-
count of it's simplicity and efficiency.
It-was exhibited at the st. Louis Ex-
position by both the signal corps of
the United States army and the patent
office. The latter issued a pamphlet
setting forth eight notable inventions,
and described the DeForest system Of
wireless telegraphy to the exclusion
Of any other. TM grand prize, and all
other wireless prizes, were awarded to
the DeForest company.
The United States government after
testing several other wireless systems,
American and foreign, has chosen the
DeForest for its use in navy and army.
The American DeForest company
claim that their wireless system can
compete commercially with the send
ing and receiving that is done by wire,
and they are rapidly installing their
stations through this country and for
eign lands, and on the sea shore their
towers are raised to snap messages
across the. mighty deep, linking the
ships on its bosom to the land and
to each other by an invisible intelli-
gence.
Who Can see all these things under
his very eyes without feeling his heart
beat high and his imagination warmed
and transported by it?
Aladdian's lamp has gone out in
the lecture room of the modern phil
osopher and the laboratory of the
chemist, and a story has come forth
more fascinating than any novel, Id
which the word finish is never written,
but upon every page is inscribed Ito
be continued in our next" with a
revelation more and more wonderful