The Morning Tulsa daily world. [volume] (Tulsa, Okla.) 1919-1927, 1922-03-22
HAVE you FIFTEEN MINUTES
10 SPARE EACH DAY?

II YOU havc--nnd are Interested In
the muryc lous science or radio COM
muuiCatiOn a few minutes d'Nuted
cnch day TO careful reading ot thls
soFlea OF articles viii provide tho
essentials necessary Tor a thorough
understanding OF this newest most
interesting and extremely valuable
branch OF electrical communication.
no understand these articles ro-
uuircs no previous knowledge Of ra-
dio telcgraphy and telephony. The
subject matter will describe clearly
tho elementary and basic principles
and lead rapidly to explanations
of the highly developed modern
equipments and thelr methods or
use.
The Intense interest IN the latest
developments " radio telephony has
hoen stimulated, as never before, hy
| the highly specialized features OF the
comparatively recent broadcaaung
! operations extending from the New
! England states to the Pacific coast.
The pleasure OF listening To the
rich vibrant tones Of our operate
stars In their delightful rendering OF
nrias aud songs--the instructive
] tnlka by eminent men on vital qucs-
! tiuns OF the day---tho stock market
quuations-thc bedtime stories Tor
| IChildrCn--thc accurate transmission
Of time signals by tho governmont
station at Radio, Va. darlington ---
the governmental forecast OF weather.
conditions~-these are but few Of the
pleasing and educational features 10
which is attributed the demand by
people, In all walks uf lifo. for FUR
| thor knowledge OF this highly do
yOlupcd science Of wireless COM
| muniratlou
The amateur OF today II the SKILL
| ed engineer of tomorrow, striving
| ccasciessly for new discoveries along
! technical lines The man OF affairs,
attracted first by its novelty, realizes
on mature elaboration, the flexible
aud far-roaching possibilities In
trade and commerce and h eager TO
know how best 10 use for his pur-
pose the ways and means Of sending
or receiving messages which travel
with the speed of light.
/ by knowledge OF radio Communl-
cation wo understand the manner In
which powerful stations ON both
Sides of the Atlantic maintain trans
oceanic intercourse day and ntght
aud how the electric waves goner-
atcd by these stations girdlo the
earth NJ n speed ~ $4,000 miles per
second, reaching the most distant
!
ntcd geographically, have close cou-
tnct through the mutual knowledge
b OF daily happenings by virtue OF this
bvrd Of electrical communication.
, The articles that arc to follow
carefully read. viii provide a clcai
understanding OF the fundamental
b OF radio telography and telephone
, ana step Ivy step viii explain the
r varied functions Of tho present dag
commercial apparatus.
impnunnt--SaNc These Articles.
\ complete set constitutes n Nulu'
1 Rblo course In theoretical and proc'
| deal electricity and magnetism, and
| their application 20 wireless tclcE
, raphy and telephony
LESSON 1
, Magnetism
, Whenever an electrical Currcu
, | flows I'm a conductor Il establishes 1
magnetic field, For this reason ,
knowledge OF magnets and maSuo
tism r. very essential.
ca Permanent Magnets.
th) Electromagucts
PERMANENT MAGNETS; II
bar OF steel Is placed In a magnCtu
field, il becomes maguetl1ed and re
taina this magnetism permanently
aud II dipped into steel filings Il vii
attract ana retain a considerable
number OF these filings on the end
Of the bar but gone In the center
These ends have the strongest mag
netism and are known as tho pole
OF the magnet.
II is a well known fact that IN,
earth possesses north and soutl
magnetic poles ana that if a per
needle is 81 supported as 10 haV,
ncedly is so supported this 60 have
freedom of movement, one end vii
+ point 90 the north magnetic pole
This end Is termed the north pole o.
the magnet and the other end tn,
, south pole.
The magnetic field about n per
' mOnent magnet contains lines o.
torco which pass from the nortl
pole 10 the south pole through thu
air and from the south pole TO TN,