The Birmingham age-herald. [volume] (Birmingham, Ala.) 1902-1950, 1924-11-23
FINDS NEW USES
FOR COLD LIGHTS
French Scientist Reveals Practi-
cal Possibilities Of Invention

It is ten years since the world first
heard of cold light. Since then Nj.
Dusscaud, inventor of the apparatus
which divests light of all its heat prop
critics, has been working on the sub
iect, Recently he gave a reception to
scientific friends and showed them the
results which mark the latest stage IN
the development and adaptation of cold
light to practical problems, writes
Paris Letter to the New York Herald
Tribute.
"There is nothing very mysterious
about cold light" he explained to ms
guests. ut is simply light deprived OF
its caloric radiation. An electric buio
gives light, but it gives out heat as Well
IL we measure the respective energies
distributed in light and in heat we
find that for every one hundred watts
expended there is only one OF tnem
really utilized for lighting. The re-
nainder burn uselessly, especially in
summer.
An Expense Division
'Trom an industrial point Of view it
seems logical to separate luminous
energy from all useles sheat for the
nurnose of economy. If one could man
age to transform integrally one single
would be greatly divided
So far, the important result OF the
s'selection" obtained by NJ. Dussaud be-
tween the two radiations, thermlc and
luminous, is the ability to create sources
of extreme lighting force from which
the power of burning is absent. There
fore, today there are being made cleo
trio ampules Of ten thousand candle
power intended for use in lighthouses.
1ncandescent light Of the same strength
would burn up everything that came
near it.
"In a lantern, on the sea coast" NJ.
Dussand said, this would be a matter
of little Importance, but in cinema
studio a lamp of lesser power, say two
thousand candle power, is Of consider
able annoyance OF actors, and accidents
are not infrequent.
Seeing Through Solids
what would you say if some one
were to propose to you that you place
your hand a few millimeters from a
source of light so intense? The most
precious of radioscopes would be the
result; your hand would become trans
parent, and if you were suffering from
q bullet wound or splinter, the Of
Tending projectile could be found, not
by the indirect means of photographs,
as with X-rays, but under the naked
eye of the surgeon. You would say,
however, that the remedy was worse
than the injury, and that the surgeon
himself would be unable to work with
out burning his hands and eyes.
Thanks to cold light. such an OPP
Grafton now becomes realizable without
the fear of burns, and light, of as great
great an intensity as desired, may be
concentrated on an organ until it be-
comes transparent or at least trans
lucent, and for as long a time as the
work Of the practitioner demands"
NJ. DuSsaud has obtained his results
by fixing several lamps on a revolving
disc in such a way that each lamp gives
out light during but a fraction of rev.
olution. After having spent a great
part of his fortune in experimenting, he
concludes, money doesn't interest me,
and willingly explains why he has been
seeking "cold light" He considers the
strange product to be the origin of all
matter.
A Bible Citation.
Fiat Lux! Such were the words, ac-
cording to the Bible by which the world
was created" argues the inventor. God
had commenced by light and not by
heat. The sun began to give out
warmth later, and its warmth signifies
old age.
"A young sprout of vegetable life.
freshly budding and placed between
cold light and Obscure heat, would
choose the former. And cold is so
little contradictory to life that one
scientist, Sven Arrhenius, believes in
the propagation of living germs in the
interstellar spaces where the cold is
absolute, whereas boiling water at 100
degrees is mortal for all that lives"
Such is the "metaphysic" which has
guided NJ. Dussaud.