Audubon County Republican. [volume] (Audubon, Audubon Co., Iowa) 1885-1894, 1888-11-29
TELEeRApHic DISCOVERIES.
Progress and history OF tho Invcn,

Progress and History OF tho Invcn.
lion.
SIX hundred years B. G., Thales OF
Milcte noted The electrical phenomena
developed by friction upon am der; twd
hundred years later Plato theorzed up
on electricity. and A. ID. 1922 Martini.
go, n Venetian, the engineer in defense
of Rhodes, applied one end of drum
head at the end of his counter mine to
discover the vicinity and direction of
tho enemy's underground galleries.
and thus. by util zing the molecular
disturbance OF the earth in sound
waves, conceived the basis Of tele-
phony. 1t was not however, until A.
ID. 1890. that Won Guerick made tho
first machine for generating FRACTIONAL
electricity. nor until A. ID. 1926. that
Wood recorded the fact that FRACTIONAL
electricity would pass through a con.
siderable length OF wire. and could
therefore DO utilized for the transmits
sion of signals. To Wood OF England
is therefore due the honor of first sug.
costing the feasibility Of electric tele-
graphy
A, ID. 1885, Murschenbrok. Germany,
invented the Leyden jar, by which
means fractional electricity could DO
stored for experimental purposes. A.
ID. 1747, Dr. Watson, England. erected
the first telegraph line between Shoot.
ers Hill and Londoni and A. ID. 1853.
G, M. (believed TO be the initials of
Charles Mathews) published the man.
ner in which he had indicated the let.
tiers of the alphabet through a system
of twenty, six wires, by FRACTIONAL cleo.
tricily. During the latter half of the
eighteenth century inventors of all na.
tions endeavored, by means of two or
more wires and frictional electricity,
to transmit intelligence between dis.
tant places; but it was not until A. ID.
1900, when Volta proclaimed his own
and Galvani's prior experiments in tho
production Of chemical electricity that
electric telegraphy. as now developed.
became practicable.
A. d, 1919 Oerstcd Denmark) dis
covered that a freely suspended mag
nelized needle would move to the right
or left. in accordance with the polarity
of current of electricity through an
adjacent wire.
A. ID. 1920. Arago (Francc) discov-
cred that when bar of soft iron was
wound with a copper or insulated iron
iron wire, it became magnet when
ever a current of electricity traversed
the wire, and was Immediately demag-
netized Tor nearly SOY when the wires
current
A. ID. 1882. Faraday (Euglan,D dis.
covered that when coil of insulated
wire was placed adjacent to. but not
connected with. another coil of wire,
through which an intermittent current
of electric ty was passed. induced cur.
rents of increased intensity and alter
mating polarity were developed in the
unattached coil. Also that the move
ment of permanent bar magnet with
in coil of wire, or tho movement Of
an electro magnet near the poles of a
permanent magnet. would develop
currents of electricity.
To the foregoing rudimental discov-
cries of Galvani and Volta. Oersted,
Arago and Faraday is the world in
debted for the numerous subsequent
inventions which have developed cleo
trio telcgraphy, plating. illumination.
transmission of power aud other valu-
able results attained during the nine.
| toenth centurr.
From Woods first conception Of an
electro-telegraph, A. ID. 1926. more
than II century elapsed before Cooke
and Wheatstone EnglanD. A. d.
1887. adapted Oerstcd's discovery OF
A. ID. 1919, to the first practical and
commercially successful sys tenn of VIVA,
may be termed visual electric tele
graphv; and some months later Morse
and Vail. United States. adapted Ara.
COS discovery of A. ID. 1920. to the
first system of recording electric tele.
graphy, Vail being the inventor of the
dot and dash alphabet.
A. ID. 1888. Steinhill. Germany,
adapted Oersted's discovery 10 the
first recorded system of sound or aura
telegraphy, and first utilized the earll
in lieu of a second wire or all metallic
circuit 1t is br no means certain tina
there is any electric current flowing
electricity like the waves of sound
traverses it. 1t is imply a customary
expression to indicate a difference il
and around wire to the conditions il
which said wire was when no electrici
ty was present in it.
A. ID. 1889. Wheatstone invented
the step by step alphabetical indicat
ing telegraph; and A. ID. 1913. House
England. invented the Alphabetical
type printing telegraph, which wa
subsequently improved upon b.,
Hughes. England.
A. ID. 1915. Balm, England invent
ed the chemical dot and dash record
ing telegraph. which. combined will
Wheatslone's automatic transmitler
hereafter explained. is the most rapiC
method of conveying intelligence il
present operation.
Finally, A. ID. 1876. Bell, Unite,
States, invented the telephone. ana b,
accomplishing the electrical trans
miss on OF speech, thus attained
possibly the highest degree of perfec
ton in REORGANIZATION of intel
ligence. r. ". Gisborne, Of he Cana
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