The Yakima herald. [volume] (North Yakima, W.T. [Wash.]) 1889-1914, 1896-03-19
RECENT EXPERIMENTS
What a Noted Scientist Has Accom-.
pliShed With The *" Rays.
SPAIN NOT VERY FRIENDLY IN 1854
she WAS the First Power 60 Recog-
ntze the Confederacy-vario In
teresting Notes From the World
at Large.

The Electrical Reeiew has Just publish
ed a communication from Nlkola Tesla,
describing for the first time his very in
teresting experiments in photography
The scientific world has been waiting an
expression OF opinion from Mr.. Tesla,
who is known to have begun his expert
ments within an hour after the news OF
Professor Roentgen's discovery was
cabled to this country.
In connection with Mr.. Tesla's com.
munication, the Electrical Repiew prints
two remarkable photographs. One OF
these shows the right shoulder of man
taken through his clothing, plate of
glass ree-sixteenths of an inch thick
and two inchs of wood. This radiograph,
which was made at distance of four feet
from the source of the tx" rays. shows
the ribs, shoulder bones and bones OF the
upper arm. The other Photograph shows
copper wire, bent TO form the word
Roentgen, and was made at distance OF
IL feet from the wooden slide covering the
sensitized plate.
Mr.. Tesla also states that the rarefac-
ton OF Crookes tubes 10 these expert
ments may be increased by electrical
means to any degree desired, far beyond
that obtanable by mechanical appliances.
This method he describes. In regard to
the nature of the ''X" rays, he says:
81 am gettin more and more convinced
that we have to deal with a stream Of
material particles, which strike the sensi-
tive plate with great velocity. Taking,
as basis the estimate of Lord Kelvin on
the speed OF projected particles in a
Crookes bulb, we arrive easily. by the
employment of very high potentials, to
speeds as great as 100 kilometers second.
Now again, the old question arises: Are
the particles from the electrode or from
the charged surface generally, including
the case of an external electrode, project
ed through the glass. or aluminium
walls, or do they merely hit the inner sur.
face and cause particles from the outside
of the wall to fly off, acting in a purely
mechanical way, as when row OF ivory
balls is struck? So far, most OF the phe-
nomena indicate that they are projected
through the walls of the bulb, of what
ever material it may be, and l am seek
ing for still more conclusive evidence in
this direction. 1t is now demonstrated
beyond any doubt that small metallic OBJ
jects, or bony or chalky deposits, can be
infallibly detected in any part of the
body"
Tesla has 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 visible, but also u
clear outline of the abdominal cavity, To-
cation of the lungs and the fur are shown.
photographs of large birds show the
feat hers distinctly. In another instance,
an exposure of 40 minutes gave radio.
graphs of the human skull, showing
clearly not only the outline, but the ca
witty of the eye, chin, cheek, nasal bones,
the lower jaw and the connections to the
upper one, the vertebral column and con-
nection to the skull, the flesh and even
the hair. Mr.. Tesla continues HE COM
munication in the following interesting
words.
"By exposing the head to power full
radiation, strange effects have been not ed.
For instance, find there is tendency
to sleep, and time seems to pass way
quickly. There is a general soothing
effect, and l have felt a sensation of
warmth in the upper part OF the head. An
assistant independently confirmed the
tendency to sleep and a quick lapse Of
time. Should these remarkable eff, cts be
verified by men with keener sense OF OBJ
servation, shall still more firmly believe
in the existence of material streams pene.
trating the vault. Thus, it may be
possible by these strange appliances to
project a suitable chemical into any part
OF the body"