Ellsworth American. [volume] (Ellsworth, Me.) 1855-current, 1898-01-19

PHOTOGRAPH OF ELECTRIC SPARK.
nothing but purely vortex movement
Just such movement as we see when
we watch the rings of smoke that laZlly
drift from the mouth of the smoker, a
vortex movement means that the elcc
tricity. like the smoke moves over and
over the circumference of the ring; that
it is sucked III by one face Of the ring
and shot out by the other. The fact l.
wonderful in its simplicity. Like all
the basic principles of science, the
closer we get to them the more simple
we find they are. And so it is with this
one, which may revolutionize many the
cries established centuries ago
Every electric current has two ends
the positive and the negative poles OF
course there is difference between
them. Scientists knew that long ago.
The trouble has been that they have
been unable to learn exactly what that
difference was Now, however, come
Lord Armstrong; photographs, show
ing the exact difference to the eye The
first of the photographs taken by Lord
Armstrong IS to the lay mind the most
interesting, even if to science it pos
sesses hardly SO great a value as that of
the others 1t is the one with the black
spot in the center from which streams
of light are seen radiating.
a camera and a very powerful cleo
trio machine were placed in darlsened
room. The camera contained sensitive
plate over which a light and fine pow
der had been sifted, thus insrring the
fact that wher the electricity was dis
charged the dlst upon the plate would
be driven about by the electric streams
and the light would at the same time
affect the plate. The electricity would
thus give the luminosity which would
enable it to be caught in the act of set
ting the dust in commotion. the time
required for its imprint being but the
small fraction of second
Never did calculation prove more cor
rect, and the result is shown III tie
plate first referred to. The black spot III
the center of the picture l. the metallic
disk which rested upon the phofa ,,r5 ilt..c
plate and received the positive dlscha--C
from the electrical machine. The ilaIt
streams which branch out IL fuatbe-s /
beauty like the illuminated roots u /
plant are really the electricity.
radiates from the disk III this IA {
1t shows conclGsively that ol,.atI.z u I
III the original, as it w n. :, ~ y /
different Ii general ap.,ea4-.:.ts i.'4ztl /
the current after il has :. COL ;...a..sc d I
certain portion Of Its uissi Il Tax the /
electricity Is II comes from tn human /
body and photograph H. aud II VIII b.
found that while II radiates under
and shorter appearance
Another photograph taken by Lord
Armstrong shows the electric currents
when two opposite discharging oisks
were brought Lear 70 one another The
radiation from the positive disk is seea
70 1t much the saIne &c il the first Pho
tograph On the outex slde, but Ut the
inner slde the rays are drawn toward
the negative elsk ana consolidated Ito
thicker lines The photograph aIso
shows clearly that the disenatse 4as
different characteristics al the two Poles
This latter tact is one q the Los:
valuable results q Lord Armstrong
discoveries Not. d. previously stasaL
that the world LAS npt long known t4le
abstract difference 1etweeu uae pysluy-
I'D negative p94es Il d current. bu, u,
latter Ct detail has Ii graf ll.,z.str.
been surrounded ty mystery NOW It l.
as clear at aag. Aot ouly II tue oiees-
e's,ee ezoaly Enowa bui Il Is e&4etly
sef'4, ana s--y sa;leaztl1,e u4e1 ayu4,s ID.
Aabor Wei Y-lt WHICH results IL nssx
~ a1p4fess' = ttle 50. d last heretofore
94ly llasel-t r. Ia HI-4l-
Lof1 Armstrong a-es .Aet he 49,
2re'1eea further q" ID AIS ,iu5llxrepe.
aad VII Agv euQeayas =
p1etare e-ees.elf, -l Is a-relsut f.l4.5s
atia II a. iaai,8 e,elai-,,e fashions ~ yys.-
s-g-e --i'sl--a-.il sl-z-.s 3lla,s