Perth Amboy evening news., 1922-04-08

A syllable spoken into a radio
phone IN New York is heard in
stantly around the world-any-
where and everywhere. Distance
meal nothing.
Radio waves travel with the speed
of light-1S6.O 900 miles per second!
Most people assume hat radio
is something mysterious. That is a
fallacy. The principles of radio are
simple and have been known to sci
ence a lorg time.
Radio Communication is accom-
plished ky the use of electric waves
which are radiated from m place
and received at another. These
waves have some of the character
istics OF sound waves or the waves
produced by dropping a pebble into
water.
Electric wave will pass through
a vacuum. They will go through
ordinary walls of buildings and other
opaque obstacles.
Strike the prong of a tuning fork
Sound waves starting at the prong
travel out into the air in all direc-
tons. This is caused by the vibra-
ton of the prong. As h prong
moves back and forth it causes the
air next to it to move back and
forth. This motion is passed on to
the surrounding air. Sound waves
travel about 1000 feet a second.
Electric waves also consist of vi
brations and their passage is practi-
cally instantaneous.
Radio waves are OF the same kind
as light waves. Both are electric
waves. ths only difference being in
the frequency OF the vibrations The
ordinary low frequencies used in h
alternating currents for electric
lighting alternate very slowly and
travel readily along wires.
To make a wav travel effectively
through space higher f~requencles
are used. Ten thousand TO 10000
600 vibrations per second are requir-
ed for radio communication.
Resonance
An electric wave starts from a
wire carrying alternating current
lust as a sound wave starts u from
a vibrating tuning fork. The waves
spread cut in all directions n go
to great distances. As the sound
wave passes out through the air IT
sets in vibration any object capable
Of taking up the motion.
This can be demonstrated with
two tuning forks. Strike one OF the
forks and Immediately grasp 1t with
the hand so as to stop n Vipratlon'
A sound Will be heard from the sec
ond tuning fork, provided the second
is in resonance or tune.
This is the principle of resonance
In radio. ashe radio wave is made to
carry a voice wave and any receiv-
ing instrument in tune with the
sending instrument can receive the
message.
Innumerable radio messages may
he i'm ali at one time but any
particular receiving instrument re-
| ceives only the message sent by the
| station with which the receiving IN
| strument is in tune.
The following program will be
| b~roadcasted on $50 meters tomor-
| row by w ] 2 (Newark.)
500 D. m.-Radio Chapel Services
hv Monsignor F. McHugh, st. Pat
| ricks' Cathedral. Central avenue
and Washington street, Newark, Sa-
cred music.
400 %. m.-Recital by the St. Ce-
| cile Male Quartet, Homer Burress
/ frst tenor: Delos Becker. second
Tenor: Alvah Nichols. nrst bass;
lanes Thomas. second bass.
Quartet - Jolly Eel
lows Rnys = Herbert; "Bordei
ballad" Hatch: THE Drum GID
sbn: "sunset." Van der Water; and
"The Lost chord" Sullivan. solos
nv Homer Burress. "Elucevan Il
STEELE Ga Tosca). Puccini, cap
Itain Mac" Sanderson by Avail Nicn
ols. Hear Me. Ye Winds anpe
waves" Handel. by James Thomas
lDuet from la Fora del Destiny
Verdi by Homer Burress and Wy
Nichols. Courtesy AeolianrCo.
500 o. m.-"sandman stories n
Abbie Ppfs.ips Walker, The Bub41