Shoshone journal. [volume] (Shoshone, Idaho) 1884-1931, 1896-03-13
Tesla's Experiments with the
4 Rays.
Has Obtained Clear photographs OF
skeletons, showing the Minutest
DetaIIs-Hfs theories.

New York, March Io.-The Electric
Review will publish tomorrow com
munication from NikoIa Tesla, describ-
ing for the first time his very interest
ing experiments in photography. The
scientific world has been awaiting an
expression of opinion from Mr.. Tesla
who is known to have begun his expert
ments within an hour after the news
of Prof Rontgen's discovery was
cabed to this country. In connection
with Mr.. Tesla's communication the
Electrical Review prints two remarka-
BILE photographs. One of these shows
the right shoulder o. a man taken
through his ,lothing, a plate of glass
three sixteenths of an inch thick, and
two inches of wood. This photograph,
which was made at distance of four
feet from the source of the Y rays,
shows the ribs, shoulder bones and
bones of the upper arm. The other
radiograph shows copper wire bent to
form the word "Rontgen," and was made
at distance of eleven feet from the
wooden slide covering the sensitized
plate.
Mr.. Tesla also states that the rarefac
ton of the Crookes tubes in these ex-
periments may be increased by etectri-
cal means to any degree desirable, far
beyond that obtainable by mechanical
appliances This method he describes,
and says, in regard to the nature Of the
X rays II am getting more and more
convinced that we have to deal with
stream of material particles, which
strike the sensitive plate with great
velocity. Taking as basis the estimate
of Lord Kelvin on the speed of pro-
lected particles ia a Crooke's bulb, We
arrive easily by the employment of
every high potentials, to speeds of as
much as hundred kilometers a sec
ond Now, again, the old question
arises: Are the particles from the cleo
trode or from the charged surface gen
rally, including the case of an external
electrode, projected through the glass or
aluminium walls, or do they merely hit
the inner surface and cause the particles
from the outside of the wall to fly off,
actiag in purely mechanical way, as
when a row of ivory balls is struck So |
far most of the phenomena indicate |
that they are projected through tbs |
walls of the bulb, of whatever material it |
may be and I am seeking for still more
conclusive evidence in this direction.
at is now demonstrated beyond any
doubt that small metallic objects or
chalky deposits can be infallibly detect
ed in any part of TIM body"
Tesla has also secured photographs
showing the bony structure of birds and
rabbits even to the hollow of the bones
He has secured photograph of a rabbit
after an hours exposure, in which not
only every detail of the skeleton is visi-
bic, but also a clear outline of the alb
dominal cavity, location of the lungs
and the fur are shown. photographs Of
large birds show the feathers distinctly.
In another instance an exposure of forty
minutes gave photograph of the hui
nan skull, showing clearly not only the
outline, but the cavity of the eye, chin,
heck, nasal bones, the lower jaw and !
to the skull, the flesh and I
wen the hair
Mr.. Tesla concludes his communica-
ion in the following interesting words; I
by exposing the head of powerful c
adiation strange effects have been
ioted. For instance, find there is :
endency to sleep and the time seems to I
ass away quickly. There is general \
oothing effect, and have felt a sensa-
ion of warmth IN the upper part of the
cad. An assistant Independently con-
rmed the tendency to sleep and quick
apse of time Should these remarkable L
fleets be verified by men with keener
ense of observation, l shall still more :
rmly believe in the existence of ma S
,rial streams penetrating the vault. n
hus it may be possibly by these strange 4
ppliances to project suitable chemical
TO any part of the body" =
VILL RESIST INTERFERENCE "