The times. [volume] (Richmond, Va.) 1890-1903, 1896-03-12
TESLA md THE Y RiTS.
Their Almost Magic Powers shown by His
Experiments.

An article by Nicola Tesla is published
in the Electrical Review describ-
ing his experiments in photography. The
scientific world has been eargerly await
ing an expression OF opinion from Mr..
Tesla, who is known 10 have begun his
experiments within half an hour after
the news Of Prof. ROentgen's discovery
was cabled 10 this country. Two re-
markable photographs are printed with
the article. One Of these shows the right
shoulder Of man taken through his
clothing and through plate Of glass
three-sixtecnths OF an inch thick and two
inches Of wood. This Photograph, which
was made at the distance of four feet
from the source Of the y rays, shows
the ribs. shoulder bones and bones Of
the upper arm. The other Photograph
shows "A copper wire bent 20 form the
word "Roentgcn.' and was made at
distance OF clevn feet from the wood
en- slide covering the senstized plate.
Mr.. Tesla also states that the rarefac-
ton of Crookes tubes used i'm these eX-
periments may bee increased by electrical
means 20 any degree desirable, far be-
yond that obtainabIe by mechanical APP
planes. In regard 10 the nature Of
rays he says:
II am getting more and more convinced
that we have 20 deal with a stream OF
material particles. which strike the sem
sitive plate with great velocties. TAX
ing. as a basis. tho estimate Of Lord
Kelvin on the speed Of projected paru-
cles in u CroOkes bulh, we arrive easily,
by the employment of very high poten-
tials. 10 speeds OF as much as hundred
kilometres a second. Now, again. the
old question arises: Are the particles
from the electrode or from the charged
. In Of
an external electrode. projected through
the glass or aluminium walls, or do they
merely hit the inner surface and cause
particles from the outside Of the wall
TO fly Off, acting In a purely mechanical
way. as when "A row OF ivory balls Is
struck So FAR most of the nhenomlna
indicate that they are projected through
the wall OF the bulb, or whatever material
il may be. and j am seeking Tor sun
more conclusive evidence in THIS direction.
II Is now demonstra.a - beyond any DOUBT
that small metallic objects or bony or
chalky deposits can be infallibiy detected
I'm any part Of the body
Tesla has also secured photographs show
ing the bOny structure Of birds and Fap-
hits. even 10 the hollow Of the bone.
lie has secured a Photograph Of a rab-
bit after an hours exposure IN which
NOT only every detail Of the skeleton IS
visible. but also n clear outline or the
abdominal cavity. the lungs, and the iur-
Radiographs Of large birds show the Tea
theirs distinctly. In another instance
an exposure of forty minutes gave
photograph of the human skull, showing
clearly not only the outline but the
cavities OF the eye. chin, cheek. nasal
bones the lower jaw and Connections TO
Inc sl,uU the flesh. and even the hair.
AIR Tesla concludes his communication
as follows; ,,
"Bv exposing the head TO powerful
radiation strange effects have been noted.
rror instance | find that there IS "A ten
dencV 10 sleep and the time seems 10
rass away quickly. There Is a general
eoofbing effect and / have felt sensa-
ton of warmth in the upper part OF the
head. An assistant Independently con
armed the tendency 10 sleep ana the quick
lanse of time Should these remarkapie
effects be verified by men with keeher
senses of observation, ] shall sun more
FIRMLY believe I'm the existence oil inateriai
streams ponetrating the skull. Ihus IL
may be possible by these strange appn-
opces 10 project suitable chemlcal INTO
any part Of the body
.Roentgen advanced modestly ms re-
suits. warning against TOO much nope.
Fortunately his apprehehslohS ~
croundless. for although We have 10 an
appearance to deal with mere shauo"
projections. the possibilities OF the APP
plication Of this discovery are vast
New York sun.