The Pleasantville press. (Pleasantville, N.J.) 1912-1929, 1922-06-07
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tTcu PV uHHh oH tc ath"sf"eHo "p""t usos ~ ""0" hSs uhhpih SUI
stance which W e call air, but in reality the air Or atmosphere space, and in
fact all solids as well are peryaded by an invisible odorhss ard almost weight
1t is by means of this ether that tail heat, light electricity, etc, ire transmitted
in the form of waves n vibrations. Light and heat waves have been known
that MAJ has learned that electric or electromagnetic wave also travel
through the ether, and it was through this discovery, and by means of these
the electromagnetic waves are very similar to the waves or rpples formed
by dropping a stone in a calm pool of water, for, just as the water waves
started by the spark of a wireless transmitting or sending instrument spread
in overwhelming circles through the ether. Moreover, just IS the waves in
uauy become longer and less noticeable and farther apart as they flow from
the splash, Sc wireless waves are clearer and sharper rear the instrument and
decrease in clearness and size a S they get farther and farther away and to
draw still another comparison. just al the shore of the pool or any object in
the water interrupts OIL breaks the waves SO a wireless receiving instrument
waves or vibrations set up by the wireless spark are electromagnetic waves
and the energy that starts them is electrical energy, so the waves in the pool
ii a person 1t a distance should toss stones into the watera al stated intervals
a person watching<the shore, and noticing the intervals of the waves, could
understand signals which "a cen prearranged rms OF course would be
a very crude and uncertain method o. communication; but If you could devise
SOM instrument to count and measure the waves and could devise means for
creating waves of definite sizes IN numbers a practical means OF eommuniea
ton could be established. 1t is just this which occurs in the Transmission and
reception of electromagnetic II wireless waves for by breaking n interruptng
The waves sent out by the spark they are transformed into long and short sec
lions which correspond to dots and dashes rs used in wireless teegraphy
These waves set in motion by the sending apparatus possess the property of
starting oscillations in any conductor which they strike, and if they strike The
aerial or anennae of a wireless station they start oscillations in the wres
but so faint and weak that they would not be detected unless sensitive nsru.
ments were provided to magnify and catch them. Such instruments are known
as detptors and consist IF various substances OF devices which are adjustable
and from which wires lead to a telephone receiver. The high frequency ostL
latons of the ether, which, are known as alternating currents, as they How
back and forth, are ut off by the magnets sin the receiver, while the deector
is designed to allow the oscillations to pass through in ont direction, but will
not allow them to return, and tus it acts as a checkHalye II a water pipe and
the alternating backandforth currents are transformed into impulses going
in me direction only and known Is direct currents These will flow through a
telephone receiver M aus ne maphnagm TO Vbrate me uus the EAR detects
the INTERRUPTED buzzing sounds which Indicate the dots and dashes of the code
tuner, for without thist the various vibrations Of tn ete sent out from mum.
Deress stations would come a a hodgepOdge IF meaningless sounds to tho
receiver. But by arranging the receiving instrument o it may be adjusted to
and the messages they carry ire eliminated Oh cut out So the wireless o-
orator who is receiving messages, may adjust hsi instrument back and forth
until he picks up any message which may be passing through the ether at the
time.