The Salt Lake herald. [volume] (Salt Lake City [Utah]) 1870-1909, 1900-10-15

felt that he must first perfect his ap-
paratus and plans, and demonstrate
conclusiVely that the new system was
better than the old.
The Changed Method.
In essential arrangement and work
ing, the cylinders plan is not greatly
different from that of the aerial wire.
The transmitting instruments are prac-
tically the same, battery, induction
coil, earth wire. etc, the only change
in this part of the apparatus being the
Introduction Of resistance coils where
needed and an arrangement for send
ing tuned messages (Which may be
explained later. But on the outside
of the room which contains these, moth
ing is to be seen. The cylinder stands
close at hand, upon table, it may be,
insulated from any earth connection
except through the transmitting inStru-
mentS when in action The receiving
station presents the same appearance;
indeed. the stations are all alike, being
fitted to send and receive messages in
the same room. When a message is be-
ing received, the wire leading to the
cylinder is disconnected from the trans
nitter and attached to the receiver.
This arrangement is USED. of course.
only when a single installation is in
operation With the apparatus for diff
Terminating between messages which
Marconi has worked and a number of
installations may be working together
in the same room or building and then
it is possible to send and receive just
as many different sets of messages as
there are instruments, differing in ca
pacity. But this is a further step, and,
just now Marconi is busy with the per-
lection of the cylinder plan on one in
stalla ton. The duplex and multiplex
systems are as sure to come as they
have in the case of ordinary wire and
cable systems.
Some Scientific Problems.
Just how the messages are sent is
more of a puzzle now than ever. For
merly no one doubted the statement
that ether waves constituted the eie-
ment of communication. Now this Is
being questioned. Why not earth cur
rentS2 suggest some. and the inquiry
is not easily answered. The production
of these high tension impulses might
easily disturb the electric equilibrium
of the earth il would seem. and the
very sensitive receiver in electric har-
mony. so to speak, with the transmitter
would record this disturbance just as il
occurs-in long or short impulses, or
in dots and dashes as they appear on
the recording instrument OF course,
if this be true, any properly arranged
receiver can take" the message pro-
vided it is within range, but the same
fact is evident in the old system. That
QlInculty Is ODNlaJeu, however. Dy the
syntonic apparatus, which makes il
impossible for receiver not exactly
in tune with the transmitter to receive
the messages sent. One may judge OF
the difficulty in finding the right cleo
trio time when one realizes that these
high tension vibrations vary from mil
lions of vibrations to trillions per sec
Ond. 1t is interesting to note that 40O.-
000 0OO, goo vibrations in the ether pei
second produce light and some trillions
per second produce the &-ray. To the
theory that this wireless telegraphy is
! carried on through the earth. that is
by disturbing the earth's electric equi-