Daily Kennebec journal. [microfilm reel] (Augusta, Me.) 1870-1975, 1912-02-29

ceived At another. This was lately |
remedied by having the apparatus at
receiving and sending stations tuned |
to varying KEYS 50 that a wireless
message projected in waves of one key
could, only be received by station
tuned 10 Il similar key. In several
European cities clocks controlled by |
wireless are already in operation and
right here in New Orleans we have
clocks that are controlled from Wash
Iingtou By wire teleeraphy. From
Norway comes the news that Captain
Havland OF the royal navy has prac-
tically completed. system for the
automatic recording in print of wire
less messages.
Wireless Is also adding another
safety device Ion. the protection OF
travellers on the American railroads.
| This is To he accomplished by means
Of a device similar in principle to the
areoplane or automatic wireless marine
signal In use on i locomotive It will
toll the engineer With unfailfng GER
| tainty of the approach of another To-
connective or any obstruction on track
for a distance of two miles.
\ device for the prevention Of train
collisions has been successfully tested
ION the tracks of the Erie railroad be-
| tween Newark and Nutley. y. J. The
device is an electric one and is intend
led to ubviate head-on collisions.
When the fast approaching trains
Equipped with this new device get
within a half mile of each other the
air brakes are set automatically. not
with the usual suddnncss in an emeE-
gency, but with a gradually increasing
1 force. the same as a skillful engineer
would put them on. The trains stop
ped far enough away from each other
10 avoid mishaps and all this hap
pened without either engineer moving
q hand toward the throttle. lever or
air brakes, the device working auto
matically The invention is operated
by a third rail The shoe from the To-
eomotte touching the rail and receiV-
ing power through it both for the op
Grafton OF the emergency brake and
also for a telephone. The principle is
similar to that of the block system,
the track being divided into zones.
The brakes can he applied sharply or
their operations NAV he graduated 81
that the trains may be slowly brought
to Il stan1stilt
1t appears from the progress made in
wireless telephony that it is but
question o. short time when We may
speak 10 each other in the various
sections Of the city or even in distant
places. for Birmingham viii be no
more difficult TO reach by that system
than it would be for a person ON the
uptown exchange Of the present sys-
TEN to speak To some one on the Al
eiers exchange. During recent exper-
imeuts conversations have been held
between persons overland at distances
ranging from one TO ten miles. Some
of the warships of the ereat powers
have already heiR conversation with
the land over 100 miles away. 4 de-
Yelopment of the wireless phone that
Is promised is the transmission Of
melodies from the opera house direct
into the home This is to be accom-
plshed by a large wireless transnItter
hung directly over the stage, which
will flash out the musically charged
electric impulse that is TO be caught
up and enunieiated through a receiv-
er installed in the house.
Another wonder Of the wireless is
the transmission of electrial energy or
power. EXperimenters declare that
the time is not far distant when the
ineters supplying the propulsive force
to the screws of aeroplanes viii receive
their power through air from stations
1T many points in the country. We
already have the submarine torpedo
that is controlled from shore by wire
less, its course being directed hther
and Won AT the Will of the man in the
land station with absolute accuracy.
We have planted in many of the great
harbors OF the world submarine mines
that can be exploded from shore at
viii at the approach of a hostile fleet
We have huge electric magnets that
pick up hundreds and thousands Of
tons of steel as though IL were but
EchiId's play. These are installed in all
1.-THE great shpyards of the world. We
have the X-ray and the Roetgen ray
,3that pierce our bodies and cure our
ills without the necessity of a surface
incision.
The discovery of telephotography,
the transmission il pictures by wire to
a distance, which was first made prac-
teal in 1906 by Professor Kern of
Munich, foreshadowed the distant pos
sibility OF an ever more marvellous dis
covery-that of television, or seeing at
a distance. I seemed a dream when
first suggested. this instantaneous re-
production upon a distant screen of
| the moving features of living face
the gestures. expressions and attitudes
OF a person far away, at the very mo-
ment that he was making them. But
even this dream has been realized.
Ernest RUNNER of Berlin, an inventor
ALREADY well known for his remarkab bic
work in telephony and wireless tele-
graphy, has made the first apparatus
which actually solves the problem of
seeing at a distance. The first ma
chimes" consist of a screen composed
of q sections, behind each of which is
placed an exceedingly sensitive seiem-
UNI piles These selenium piles are so
sensitive that they react to the slight
est variation in the light which strikes
them. One of these screens Is placed
at the sending station, and eacn sec.
ton of one screen is connected elee7
| trically with the corresponding section