Tulsa daily world. [volume] (Tulsa, Indian Territory [Okla.]) 1905-1919, 1916-10-01

turns OF wire and the amount of cur
rent flowing through the wire
/ Now let us see what will affect tn,
strength OF the current which viii
flow through the wire in the secon(
case that is, where It is made to flow
by the magnetizing OF the core
5--lf there be but one turn of wire
around this core when It is magnet.
iZed TO certain extent, n current
having a certain amount OF voltage
and ampereage will flow, while n
there be but two turns about the
core, each turn will have the same
voltage or pressure and the two
pressing together will give twice the
voltage and so likewise three will
give us three times the voltage and
ten thousand turns ten thousand
times the voltage of one turn.
6--The amount of current made to
flow Will, however, decrease as the
number of turns is increased. or In
other words, the amperes, when there
gre ten thousand turns OF wire. will
be but one-ten thousandth or what IL
will be with one turn OF wire
There Is one difference between the
action when the core becomes mag
netized by current passing through
the wire and the reverse case. that Is,
where current is made to flow
through the wire due to the mag
netizing of the core, which is this:
In the case of the core being
magnetized by current flowing
through the coil, the core will be-
come a magnet the moment the cur
rent flows and will remain n magnet
Just as long as II does flow, losing it's
magnetism only when the current
stops flowing or is interrupted.
Sin the second case, however,
that is. where the current is made to
flow through the wire due tO the
magnetzing of the core. there will be
n shot of current the instant the core
Is magnet'2ed, or the instant II Is de-
magnetiZed, but the current will not
flow In a constant stream. ii stopping
after the instant Of magnetism oven
though the core remain "A magnet
If the core is suddenly demaC-
neti7ed there will acain be shot
Of current through the wire, Of the
same voltage as when the core Is
magnetzed, but it will flow in the
opposite direction.
! am going to give vour here the
wav nv own imagination let's me pic
ture this action in my minds eye.
First. | must tell vou of simple
eXperment If we laid n magnet on
n toblc and put piece of p9Dcr on
this mngnet and then surinkled some
iron filings on Ne paper these filings
unor tanning IN" u9pcr would form
themselves in definite lines. as Shown
in Fig. I. Thus proving that there
ave certain lines. Of force running
from the one pole 10 the other and
taking the course shown by the fill
irgs Electricians call these magnetic
limos Of force. Of these there will be
millions. d"rondine on the strength
Of the magnet.
Let us imagine that when the soft
iron core Is not maCnet those limos
9~e in the iron itself as shown In
Fig. 2. and that when the core is
magneti2ed they are sort Of blown
out FROM the core. much the same as
balloon acts when being blown
m. II their ends he fastened to
ends of the core the result would lie
that these lines would then bulge
ont from the side of the core until
thev took tho form eff Fig. !.
Now suppose a wire were wrapped
around the core. Then these wires
would tend to provent this hulg'ng
out and the lines would then first
take the form shown in Fig. 3, until