Semi=weekly graphic., 1896-02-22
LIGHT AND NO HEAT.
TIE REVOLUTIONARY INVENTION OF
A NEWARK ELECTRICIAN.

TIE REVOLT lOtNAhf INV
A NEWARK ELECTRICIAN.
Electricity the Source of the 1ncandesenoe'
No Carbon Filainent Used-Claims That
He win Yet Supply Electric Light Sticks
For the Vest Pocket
Mr.. D. Mcfarland Moore. the electrl-
clan Of Newark N. J., has just patent
ed an invention which will revolution
ize electric lighting in more than one
Way. He announces that he has solved
the problem of how to make light with
ont heat. something which has puzzled
scientists for a generation, and with an
ordinary ITO volt electric current ne Sc
enres the most beautiful white light
from glass tubes. The apparatus which
furnishes almost the luster OF daylight
is scarcely bigger than an ordinary tea
eup. aud the little machine through
which the current passes before it reach
es it is not bigger than ones finger.
The old incandescent light is produced
by the action of a current passing
through a loop of carbon flament in
vacuum bulb The new light comes
from the passage of a current through
the vacuum itself without any carbon
fllament. The inventor viii hand the
visitor a long glass tube, about as big
as a broomstick, and then put out all
the light in the room. Ina few seconds
streams of light begin playing through
the tube from one end to the other, with
no wire connecting the tube with any
apparatus. 1t is mysterious and weird
1t is a species of electrical induction.
The light is produced by what, for want
of q better name, may be called ether
vibrations. Mechanically speaking, to
quote the inventor:
81 am using vibrations similar to
those of an electric bell, putting them
in a vacuum and getting the result you
see.
The apparatus for producing the new
light is merely the small magnet and a
glass tube the size Of cigar. Within
the tube is supported a piece Of watch
spring. At one end of this is a small
disk of soft iron, about quarter of an
inch in diameter. Midway in length
and in contact with the spring is an
iron wire, the size of a pin. This wire
extends through the glass, as does the
wire attached to the watch spring. The
air is then exhausted in the glass tube
leaving two metal contacts i'll higI
vacuum and permitting the spring t.
vibrate freely,
When the glass tube called the vi
brator) is placed over the center of tht
magnet and the wires in the tube arr
connected with wires in the magnet
1 both being part of the electric circuit
the current in the primary current
brings into existence a second current
of sufficient strength to produce the new
light; when this latter current is con
| nected with hermetioally sealed glas,
receiver, having absolutely nothing il
it, artificial daylight is the result
through the vibrations eff ether.
| One Of these days the inventor hope!
to put on the market sticks of electric
light that can be carried in the YES
pocket. He expects to make a tremen
dous saving in the cost of producing
electric light As at present made onl,
about one-seventh Of one ton of coal i
converted into light, all the rest beinl
wasted in heat.
When Mr. Moore first applied to til
patent office, the reply cano that a pat
emit. must be refused, as there was II
law known to electrical science where
by such devices would work. Mr.. Moor
fherenpon took his apparatus to Wash
ington, Illuminated a room in the pat
emit Office with the new light, which h
had just been told would not work, am
won a complete victory, securing hi
patents without further question, Thi
is the first public announcement of hi
discovery. 1t has been inspected by sucl
scientists as Professor Anthony, former
ly of Cornell university; Professor
Croker and Pupin of Columbia college
Magee of Princeton and Denote O
Cambridge, all of whom approve of i
and the principles used. -Pittsburg Post
Dispatch.