The sun. [volume] (New York [N.Y.]) 1833-1916, 1914-06-14
SIGHT BY WIRELESS
IS SCIENCES LATEST
You May See Your Girl. Though
Many Miles Away
From Her.
TELEPHONE FOR THE EYE
AS Voices Sounds Are Trans
mitted SO May BE Light
GradatiOns.
TELEPHONE FOR THE EYE
Special correspond,uce 10 Tur srN


LONDON. June 1.-THE humiliation OF
space by the wonders OF modern science
has been carried a step forward by the
latest scientific discovery. What the tele-
phone has done in the transmission of
sound is now equalled by an invention
FOR the transmission OF light by wire.
The new invention enables the image
OF any object 10 be transmitted and re-
produced before the eyes of n spectator
miles away, just az the telephone trans
mits and reproduces the tones OF the
voice.
The inventor. DR.. NJ. A. Low. a Lon
don consulting engineer. has given n
short description OF the apparatus and
method OF the new wonder. The trans
mitter Is n screen composed of cells OF
selenium the electrical resistance OF
which varies according to the light that
touches II. over this screen there passes
a spontaneously running roller consisting
OF n number of pieces. which are alter
mating conductors and insulators.
The roller il driven by a motor of
3. 600 revolutions minute and the re-
sulting variations of light are transmitted
along an ordinary conducting wire. The
receiver Is made up OF series OF cells
operated by the passage OF polarlzed light
through thin stats of steel and mt this
receiver the object which is before the
transmitter Is reproduced as a Pickering
image.
The process " described rs 'kine-
photographic application of common cleo
| tr!cal principles" The system has been
| tested through resistance equivalent to n
distance of four miles, but in the opinion
| of Or. Low there IL no reason why 1t
should not he equally effective over far
| greater distances
The tones OF the human voice. OF
| which there are hundreds OF gradatlons,"
says DR.. Low. "can be reproduced by wire
less telephony. The Rradations OF light
are far simpler than those OF sound and
| Il should be possible to devise a wireless
| means OF transmission / will commit
myself to the prophecy than In hfty years
| people will look back with wonder at the
| days when II was necessary TO he at n
! persons side in order TO see him. When
| this day arrives consider how II Will
| change the conditions OF warfare. I'm
| agine the altered methods OF military
! operations when you can see what Is hap
| penlng miles away"
At present the image reproduced is OF
the size which the eye or camera
would take. II shows variations OF light
and shade somewhat In the degree OF a
! halftone block, but It does not reproduce
| color.
DR.. Low Is we'll known In London ms a
! consulting engineer and has engaged In
| laboratory research for the Government
| A number of inventions stand TO his
| credit, including the low high pressure
motor and high pressure petrol engine
The experiments In connection with light
by wire have extended over five years.
In the transmitting screen seleniur
may be replaced by any diamacnetic ma
terial. The cost Of the apparatus is con
siderable, as the conductive sections of tn,
| COLLAR are made of platlnum.