Evening star., 1923-01-14
NardI Officials Get
of Jenkins
STUDY USES IN
VAR AND PEACE
Faces of President
and DENLY Sent
.$Throltgh Air.

4 X
ygPlaps for the practical utilization
S$sthe United States government In
times of war. or peace@-of what is 1
rallied as one OF the outstanding in,
venaons$pf' the. ,age-radio.p pictures
are Abeing considered by high navali
oHfcials. It was disclosed for the first.
time. ;today from an authoritative
SOURCE? - =. /
Interest Of oficials in the. possibil- |
ittes efaradioI transmission of photo
graphs. half tones and other pictures
the invention of Washington
scientist. c. Francis Jenkins-datesl
from the successful staging in this
city WeeenGy .of a demonstration of
the neSs fnSentiou before a group of
radio experts OF the Navy and Post
Office departments and a representa-
tive of the motion picture industry.
Secrecy which has surrounded this
test was partially lifted last night
by Mr.. Jenkins with the sanction, 1t
is understood, of the naval author
tiles. The demonstration took place
December IL before a group which
included Admiral F. S. Robinson.
Admiral Henry r. zeigemeier. in
charge of the bureau of communica-
tons, Navy Department; Capt. J. T
Tompkins, Commander Stanford Z.
Hooper, head of the naval radio sec
tion; Lieut.. Commander A. Hoyt Tay-
lor, in charge of "NOF," the Navy
broadcasting station, at Anacostia;
Lieut.. Commander Z. HI. Loftin of the
Anacostia. station, and other naval
officers. in addition to-J. G. Edgerton,
then supervising radio activities tor
the Post Office Department. and John
NJ. JOY, representing Will H. Hays
and the amalgamated motion picture
industry.
See Pictures Received.
During the demonstration photo
graphs and drawings were oroadcast
through the ether from the Anacostla
station to the Jenkins laboratory at
1919 Connecticut avenue northwest.
Commander Taylor stayed at Ana
costa and supervised the sending
unit, while the remainder of the ON,
ciais gathered about the small
cameralike receiving apparatus In
the Connecticut avenue laboratory
and witnessed the reception OF !ne
pictures on negative Photographic
plates and watched their printing IN
the developing room.
: Following the exhibition, wnlcn
progressed without hitch OF any hlIlo'
the officials are said to have congra1u
to have expressed enthusiasm regarding
the many and varied possibilities which
the machine holds forth
Four pictures in all were broadcast
during the test, which itself consumed
about half an hour. Two photographs,
one of Secretary of the Navy DENLY,
and one Of President Harding, and two
penciled sketches, one representing a
map and the other comprising writing
and printed letters, were used. Al
though the photographs of President
Harding and Secretary Denny Whlcn
were transmitted were said to be none
nnfrs NH H.
point, the prints made from the receiv-
ing plate In the laboratory were quite
clear the heretofore impossible feat OF
broadcasting half-tones being success
fully accomplished.
Six Minutes I'm Operation.
The portrait of President Harding
which was sent through the air was
the same as that published in The Sun,
day Star recently In connection with
detailed account of Mr.. jenkins inVen-
ton and its possibilities. The photo
graph OF Secretary DENLY was selected.
Il is understood, as being the subjects
'fayorike."
About six minutes was required for
the receiving Of each picture, but the
inventor predicted that this time could
be reduced to one-sixteenth of second,
the speed necessary to produce motion
pictures. With this development, which
Mr. jenkins expects to perfect within
about eighteen months, radio motion
will be an accomplished fact
Prtor-to and Immediately after the
test the officials were conducted on a
visit to all the rooms OF the small lab
oratory. The men manifested particular
interest in the shop where the pris-
matte rings" which make possible the
sending Of holf-tones by radio, are
ground, into shape.
The present status Of the official In
vestigation, it Is understood, is that
the officers are studying the various
phases of the invention to ascertain
to what extent radio pictures would
be Of help in war time and to report
on how. the government could de-
velon the invention for practical
service in time of peace.
Another Test Likely.
Meanwhile, it was learned, arrange
nents probably will be made for an
other yofficiA demonstration, this
time between a distant sending sta
ton, such as Mineola, l. l., and
Washington. Mr.. Jenkins claims that
the distance which pictures may be
sent by radio depends entirely on the
ton selected. 1t is not unlikely that
before long one of the powerful send
ing stations will be used to send
photographs across the Atlantic as
an experiment.
A human interest angle to the test
last month developed when one of Mr..
jenkins assistants demonstrated to
those present that he could identify
the photograph being received by
sound" Picking up a headpiece
which was connected with the receiv-
ing set, and from which the monoto-
nous series of "groans" caused by
the picture impulses were being
that ii was Secretary Denby's like
ness. This was found to be true when
the plate was developed. The as
sistant explained that he had trans
nitted the picture SO often that he
had learned to know how II sound
ed. Several of the naval officers
listened" to the DENLY picture also
Mr.. Jenkins pointed out that II is
possible other receiving stations
around Washington heard" the pie