New-York tribune., 1911-04-02

~EpTAJN ssibliteS-indccd, actual
- ,arfnrmances-of the eye Of the camera
,iroh,hIv unknown and unrccognized by
majority Of persons, among "'o''' '
bc counted Photographic amateurs a''n p,y
fessionals. Although this artihc'ai recoIuins
eve is in many respects INFERIOR 10 .,io ~
oro,p of vision. il has been found that IT can
d;sclosc matters beyond the ken of the lat
ter. even when aided by all other ''S''"-
mcnts known to optical science: -,
Recently these unique capab'''e, o' ,ne
photopraphic eye have been turned 10 az
count in several marvellous ana uSeiuI way
In such widely divergent branches 9f S'iencc
rs medicine and astronomy vaIuapic ieSu'''
are being Welded by this means; w,iiie' a.
dctector Of evidences OF crime II mas pee"
found in some instances 10 DC S'''s"'"'I
efficient. :,,;e>
The scene is Government SCIENTIFIC
laboratory. An electric bulb IS Switcned on
and reveals, among other tcchhicai P'Ia-
phernalia, a microphotographic instrument
designed for the taking Of the rilinu'eSt as
ease germs. This particular instrument
however. is not Of the usual type ior 'i!c
light by which the photographs are maze Is
invisible to the human eye. me Scieh,St
who preSidesin the laboratory kindly under
takes to explain what TO the unScientihc
might appear a paradoxcal statement. ana
the method he uses is truly an impressive
and spectacular one.
Witchery Of Science
SWITCHING off the Edison bulb ne
- flashes on powerful arc light, the In
tcnselv white rays Of which are detected by
h.. brilliantly
defined spectrum. The beautifully grad
uatcd colors. ranging from dark red at one
end to fainteSt violet at the other, glow
mon the otherwise black wall, the visible
dissection of the white light rays into their
component parts. 1t was strange TO realize
that rs the scientist stated there was shining
at each extremity Of this visible spectrum
brilliant and potential radiance; each to be
sure. different in peculiar properties, but both
light. And the wall at each end remained,
to all human perception, as black as the
proverbial hat.
B1t If was easy to demonstrate the aSScr-
ton. Taking a fluoreScent screen he held IT
against the wall beyond the fainteSt tlnge Of
violet. and, behold. it glowed with radiance
much more than any III the whole visible
sDectr1lm. And far away from the spectrum
the magic screen still glowcd IN the dark
ness. even at distance from the visible
light of several times the length Of the en-
tire rainbow colored band. Truly it was
veritable witchery Of scienccl And beyond
the dark red at the opposite end of the spec
trum was glowing light, not 50 brilliant
but containing more heat than any visible
radiance.
Only recently have photographs been
made successfully with these infrared rays,
so called Such photographs show intensely
black shadows; those made with ultraviolet
light. the existence Of which the scientist
demonstrated 50 picturcSqucly, disclose no
shadows at all. These strange light effects,
however. which have their learned explana-
ton, curious and interesting as they are.
proceeding from rays one cannot see with the
naked eve. Weld in importance TO the tact
that ultraviolet photographs are now reveal
ing new knowledge concerning such oppo-
site subjects as the distant and Sllvcry moon
and the microScopically minute disease
germ.
Precisely what will be revealed by the
camera eye. aided by this light alone, con
cerning the disease pests Of humanity, Only