The Celina Democrat. (Celina, O. [Ohio]) 1895-1921, 1918-11-15

Us the sport Of daredevil fanatics
Yet at this moment the winged mem
berS Of our air cavalry take Ia the
clouds with the same nOnchalanCc
that the average motorlSt tunes up for
trip 10 the seashOrc or mountains.
Robbed of its battle dangers aviation
today stands out as an accomplished
fact, tc be negotiated with ease, com
fort and safety. Our boys after the
war will turn their garages into ham
gars. The aerial pOstman breaking
records today between New York and
Washington is harbinger Of the new
era OF mir transportation.
So after the war the wireless tele-
phone will be developed as casual
commercial asset and men will talk
with their business partners in Lon
don, Paris and Rome, say the SCien.
fists just as today they use the telc-
phone to communicate with Atlanta
or Chicago.
In the army and navy Of the United
States this fall. rTdiO-telephnny Is
playing potent part I'm the business
of winning the war. Thousands OF
young men who go up to the radio
arms Of the service are linking tOgeth-
@" the fighting forces of the nation so
that each and every separate unit is
closely united under n single gui9
puce, working cohcSively for the nIfe
supreme attainment and nj moments
notice in the most intimate contact
With their military directors.
The great problem in radiO-tele-
phony at first was the question Of
sufficient energy control. 1t was nee
pssary to develop transmitting sta
tions capable of generating high-fre-
uuenCy currents and radiatiuG them So
that the currents induced in the re-
ceiving apparatus when rectified
would cause no disturbing noise in
, the telephone receiver. Ii was neccS-
sary also to ind the means by which
the amplitud" Of the high frequency
| currents coulG he controlled and mod
ulated by the voice so that the ampli-
/ tude of radlal'd waves followed close
ly every variation in the voice.
Brought Under Control.
/ All Of these difficulties have been
1 overcome in the last few years by the
! worlds renowned scientists. 4 Sys-
! TEN of control has been built up with
! the pliotron as its potential pivot so
| that the amount of energy in the wire
| less telephone transmittcr need be no
| larger than that commonly used in
standard telephone circuits. 1t has
been found possible to connect mp this
radio telephone with the regular tcle-
! phone lines So that conversation may
1 be carried out between two people.
both OF whom are connected with the
radio stations by means of the regu-
lar land lines.
Two fields of activity for radlO-tel-
/ ephony opened up with the develop
mcrt of the first wireless telephone.
/ The first was for long distance where
wire telephony was impossible over
submarine cables and expensive on
land. The other was for short dis
tances between ships at sea, and be-
tween land stations.
Atmospheric Conditions.
TrnnsOceanlc communication is like
! iy to be developed faster than inland
| radio-telephony. 1t was pointed out
some time ago by J. J. Carly, the cleo
/ trical engineer whose achievement
made possible the first wireless tele-
plS1nc messages from New York to
/ Pear Harhor Hawaii, that transmits
! sion across the ocean was easier than
across land because there were fewer
atmospheric disturbances.
/ Overcoming these disturbances is
the greatest problem we have at
/ hand" he said "We do not know eX-
Inc.ly " what causes them, but from our
/ first experiments we know that they
are greater in summer than in winter,
/ so Hr' r"~'"bly caused by electrical
disturbances in the atmosphere. The0-
| retically any number of messages can
! he kept separate by tuning the app"