Tulsa daily world. [volume] (Tulsa, Indian Territory [Okla.]) 1905-1919, 1916-09-10

sdmo voltage ns whom tho corc In mag
neti'cd. hut II win flow IN tho opposite
direction.
am rping to give you hero the WY
my own imaginutiou lctq me picture
this action In my minds Cyo.
First. must tell you Of n Hlmplo
experiment lf wO hid n magnet on
IA tublo and put ~ pioco Of paper ON
this magnet ana then sprlnhlcd some
iron filings on tho paper these filings
upon tapping tho paper would form
thomsclvos In definite lines. as shown
IN Fig l. Thus proving that there
are certain lines of force running from
tho one polo to the other and taking
the course shown by the nling1 Elec-
trlcinns call these magnetic lines ol
force. OF these thor, VIII bo millions,
depending on the strength Of the mag
net
Let us Imagine tn when tho sYrt
iron coro Ia not u magnet these lihca
are IN tho iron itacI. nH shown In
tlg . and that when the core In
maKnutlxod thoy are sort Of blown out
from tho core. mucD the sauIc ~
balloon acts when ncinE blown up.
II their ends he fastened 10 ends OF
the core the result would hc that these
lines would then bulge out from the
aido Of tho core until they took tho
form of hng. l.
Sow suppose II wi.o were wrapped
around tho core. Then these wire
would tend to prevent thiH hulEtnS
out and tho linca would then fir
l.Nr the form shown I'm f1B, ;, until
the strain became 30 great that tn9y
snapped In swapping the lines would
coli oI whip laSh about tho wires.
Trcro being, however, millions of
these lines more OF thtm viii have
cuilcd on tho wire rhan can b. hclu
on Il aud they will therefore, be
forced tu travel alonS tie wire. Tnud
the magnetic lines will have bsen cOh
vortrd into electric li"eS 81 electricity.
Lot us assume that nt;er the limos
have snapped ubou' the wires they
suycccd in Joining mclr ends and thus
take the form shown In Fig. 4.
Now, when tho core is domaBneti1cd
let us suppose that tho Ines contract
ma nrrin try to take tho form shown
ia Fig A they meet the wires
while contracting they VIII firnt take
the form OF Fig s. thun snap about
III, wires ana thus aGnd current OF
electricity through the wires, much
'ho same az In tho previous case, but
IN the opposite direction
TO review the above, we see thu,
it ~ soft iron coro have u coil of wire
wound about It. 1t will he a magnet,
whlo uu electric current Is flowing
through tho wiro and that this action
viii work In the opposite direction.
CHAT IN, II u Cor0 I've srddculy mag
nvti2cd or dcmugnetised u current will
flow In tho wire coilrl about iO; and
that the voltage OF this current viii
/ be dtpsndcnt on tho number of turns
! Of wire.
l.o, us now see how We can use tho
| above actions to transform tho low
! voltage current Uo glyo which We can
conveniently carry sufficient batter
| les or larHc enough g"ucrator) into
| the high voltage current Whioh we
, must huvo In order tina, u can burst
or jump across the air sap OF tho
! spark plugs.
Referring to Fig 6. this shows a
core (nD with single coil OF wrc
| (UD wound about one end OF g. From
tho above, CD and 60, we learn that
If we could suddenly magnetic tho
core (a). II shot OF current would flow
through the wire = How can W,
magnotiao this core2 Why. by sim
ply winding about the other end nn-
othor coil OF wire and letting current
pass through this from battery OF
q. c.her source and having II switcA IN
the Circuit for contrulinr the flow OF
tho current.
rlurc Z shows that wo now have
tn) being tho core (b) tho Cyll II
which wo want to make cuUon
flow. td) tho coil In which curren
can flow from the battery (G), thu
magnrtiziug (A), and OF) the switch
RepeptlnE, n wo wor" to suddenly
close the switch, II Cu,'rcnt would iioV
q I'm the coil 90, thus magnouzinS tn
coro ta), and because of this mag
nrtizntion there will pc shot or cur
rcut in the coil CD and wirc tC)
l'pon auddenly opening the switch
b.. thus intorrupting the vuTront In tn
, coil ND), tho core (aD VIII be demaS
0 nettacd and there viii he shot q
curront In the ooil (B) and wire &C.
I I'm the opposite direction TO that whic
flowed whom tho switch was closed.
d The strength of the magnetism d
the core win depend Ipou the Noltag
- and nmpcrago OF thu current III |"
Z roil ID) and II Ia natural tC belicV
: -. -. ..Lr.n.rlh nf nln.nnil.iIn NJ