Fairhaven herald. [volume] (Fairhaven, Wash.) 1890-????, 1893-04-26

Streams Of Mysterious Light and FAN to
Heat the Wires That Carry These Won
derful Currents.
Almost from the time that the vibra-
tory theory of light was accepted scien-
tiic men have looked forward to the day
when it would be possible TO produce
light without heat. For it is an unfor-
tunate fact that SO far every effort to
produce light has been accompanied by
an enormous waste of energy due TO the
production Of useless heat. The simplest
way Of producing light is 10y means OF
the combustion Of some compound Of
carbon. 1t does not matter whether the
carbon is solid. as i'm a candle, or a fluid,
as in lamp, or in a gas as in ordinary
illuminating gas, the process is the same.
The union Of tho carbon Of the sub
stance with tho oxygen OF the air pro-
duces the rapid vibration that the eye
recognizes as light. Carbon, though the
element usually employed, is not neces-
sary factor, for magnesium, potassium,
iron-indeed almost any Of the elements
will take its place. Neither is oxygen
a necessary part in the production of
light. Chlorine win produce an even
more brilliant light with certain sub
stances. It is evident, therefore, that the
rate of vibration and not the element
employed is the principal factor in pro-
ducing light.
Unfortunately all methods Of produe-
ing light by means Of chemical combina-
tons (such as the union of the carbon of
the candle with the oxygen Of the aif)
are accompanied by very large pro-
duction Of heat waves, which in the ma
jority Of cases are utterly useless, if not
absolutely troublesome. The old simile
of musician desiring to produce a GER
tain high note being compelled to press
down all the keys Of his instrument is
an apt one. The lower notes are not
merely useless, but they are positively
annoying.
Singularly enough, the first solution of
the problem that was attempted success
fully was by the aid of heat. A very
small amount of light waves are required
for recognition by the wonderfully de-
veloped special sense which man pos
sesses. tits intensity, not quantity, that
is wanted, to use a technical term. Con-
sequently If a very small particle is heat
ed TO incandesceuce the light which it
throws out bears a far greater ratio to
the amount Of heat required than it does
if large mass is similarly heated.
This is one Of the radical bases of the
utility of the incaudescent electric light.
An extremely small filament is heated to
incandescence through the resistance
which it offers to the flow of an electric
current. 1t generates heat, it is true,
but the amount of heat TINS produced is
directly proportional 20 tine mass Of the
carbon, which IS very small The light
produced, however, IS amply sufficient
for all ordinary rurpo5os.
This solution, however, is highly UNI
satisfactory 20 scientists. however useful /
it is to the public "a. large Light apart
from heat altogether was wanted. The
FREELY, the phosphorascent sea animal
cules and even the exhausted tubes Of
Geissler furnished the hope that there
was yet some method Of reaching the
high note without pressing down the
whole keyboard.
Recently an extraordinary genius has
appeared in TINS country who seems
upon the verge Of discovering, if not to
have actually discovered, method by
which this might be done. Ni1ola Tesla,
a man of independent fortune and most |.
brilliant mind, who was for time con-
nected with Ediscn, has dared to expert |
ment with rapidly alternating electric (
currents. The result has surprised the |
widest dreams Of the theorizers. He /
has succeeded in producing light of com
paratively high intensity without the .
production of heat and apparently di- !
rectly by the use Of electricity. The \
halls of the Royal society of London and /
of the Franklin institute of PHILADELPHIA /
have been illuminated by means of the /
light radiated from bare copper wires in /
the open air carrying these so called /
Tesla currents.
The wires were not hot, but they radi-
ated from their surface light and sent
from one to another bands and stream
ers of the mysterious light which we see
in the aurora borealis. The effect must
be seen to be thoroughly appreciated,
but when it is stated that the expert
menter without difficulty succeeded in
radiating light not only from an ex-
hausted glass tube held in his hand, but
also from his thumb, his nose and other
features, the enthusiasm which swept
over his audiences in London and in
Philadelphia may be appreciated.
As yet no useful application has been
found for these wonderful new develop
ments in electrical science, but they
should be welcomed as a harbinger of
further progress .--Baltimore Sun.
A singular Invention.