The morning news. [volume] (Savannah, Ga.) 1887-1900, 1896-05-10

rot to place too much confidence in the
condemnation of the learned. Profession
al engineers, he observes, pronounced the
steam railway Impossible. Professional
electricians said that the incandescent
light was impracticable. And Mr.. Moore
has now done what professional physi-
clsts have declared to be almost as abb
surd an object of effort as perpetual mo-
ton; he has obtained a light of respecta-
bic intensity from the Geissler tube-or a
modification of ii.
Mr.. Moore's tubes, instead of being the
little toys of the laboratory, are ten feet
long and nearly as thick as ones arm.
10 uSht room dozen or twenty OF
them are needed, for the radiance that
mis- them is not powerful, and resembles
the daylight that filters through morn
ing mist rather than the powerful glare
OF direct illumination. But Mr.. Moore
says that we must give up the idea of
collection of small intense uEits of light
for Illuminating room. To initiate diff
FUSED daylight we need a mAd radiance
coming from as large a surface and
from as many directions as possible ana
these are precisely the characteristics of
the vacuum tube lights. 1t resembles as
closely as possible the light of a cloudy
or misty day in room with many win
doWs-a soft, pure white, Shadowless ra-
dance pervading the entire atmosphere Of
the apartment. 1t is part of Mr.. Moore's
plan to utilize the tubes as decorative fea-
lures, so that the illumination will come
from the cornicesl mouldings and pillars
OF the Eoonl, or perhaps even from articles
OF furniture within it.
The inventor has been enabled to secure
this result by means of a very simple de-
vice; and to this we shall be indie bted for
the success of the new light, if it fulfills
ITS dlScOVerer'S expectations. The eff
cheney and intensity of the light from a
vacuum tube depend on the part of the
induction coil, which is called the inter
ruptor' or VIBRATOR bit of metal that
flies to and fro in precisely the same man
ner as the tongue of an electric bell max
ing and breaking the current as il does so
ne quicker the motion, the better the
light. This has long been recognized, but
IL has always been found impossible to
breaks beyond a certain point, owing to
the passage of a spark at the critical mo-
ment, which prevents a quick, sharp
break of the current. Mechanical devices
such a airblasts did not help the matter
much. There is where Mr.. Moore inven-
telruptor in vacuum, and finds that in
TINS way he can prevent all the trouble
that occurs in the open air. This little de-
wee called by the inventor a vacuum vi
brator' is the key to his whole system.
and has enabled him to obtain the results
that pleased and astonished his audience
at the recent exhibition mentioned above
1t must not be supposed, however, that
Il was child's play to devise the proper
form for such a vibration 1t was saws
the inventor a matter of tedious expert
mentation and study. The slightest al
teration in the dimensions of any of the
parts may change it from a good to a
already said, the principle is exactly that
OF the vibrating tongue of an electric bell
namely, the alternate action of a spring
pulling in one direction and magnet at
tracing in the other. The inventors
change in the old device is simply its in