Evening star., 1927-04-24
SCIENTISTS TO SEE
TELEWS|ON TEST
Demonstration to Be Made
at Meeting of National
Academy Tomorrow.

TIE National Academy Of Sciences,
the senate of American science,
will hold its annual meeting Mt the
Academy Building here tomorrow,
Tuesday and Wednesday.
A notable feature OF this years
eession viii be the second public
demonstration by the American Tele-
phone & Telegraph Co. Of televiston.
n,Ais will really he the first demon
sevation in WASHINGTON, Two weeks
eEo a group oF local officials, news
paper men and scientists gathered at
the CheSa peake & Potomac Tele-
phoue Cos office assisted in the
demonstration which was staged in
New York. but did not actually see
the images which were projected
over the wire.
Fcr the purposes ot this demon
s;rat3on al the trapSmjtting and re-
ceivinS apparatus used in New York
has been broGght to Washington and
now Is beinc set Up at the National
Academy Building, The images Will
he transmitted from one room to
another. Members of the academy
sua taejr visitors viii be able 10 sit
before the telephone in one room and
see The faces OF their friends in the
next raopa. 4 small glowing neon
gGhe WS3l be used by which only one
person can see al a time, There viii
he exhibited. however a large neon
Euce similar TO the one by which
Secretary 19ooverS face was seen in
New YORK st the first demonstrate
Sessions Open Tomorrow.
D~. Frank II. Lewett. president Of
the Bell Laboratories. ana Or, Her
he1t + Ives, who was largely re-
soansIhle for this new and sensa-
.fonsI advance in communication,
wiGf be present ana explain the nature
81 the experiments that led TO tele-
vision.
This demonstration will be held
n $50 o'clock tomorrow evening.
The session tomorrow morning,
which starts at 10 o'clock. will be
devoted to biology and chemistry,
with eight papers scheduled on highly
technical subjects. such as the effects
Of small amounts of chemicals IN
Increasing the life activities of plants
and a measurement Of the heat pro-
duction involved in nerve action.
The papers tomorrow afternoon Will
be devoted largely TO physics and
astronomy with atomic spectra, Nari-
able stars and X-ray wave length as
notable subjects. At this session, DR.. |
a..
tlIte of Washington will discuss the |
poIarization of light in particular ref |
erence TO the materials exposed on the |
surface of the moon. DR.. c. G. Abbot |
of the Smithsonian Institution VIII |
present a paper on periodicity in solar |
radiation. DIR. Paul r. Heyl of the |
Bureau of Standards, who has been at |
WORK for the past two years on de-
termining the constant of gravitatlon, |
which involved a reweighing of the |
earth. will make a report on his find
ings.
Exhibit on Grand Canyon.
The Tuesday morning session will be |
devoted to physics and geology. DR..
John c. Merriam, director of the Car
negie Institution of Washington, will
present an exhibit of results of research
Grand Canyon, and DIR. David White
Gilmore of the Smithsonian Institu-
ton will describe the footprints of un-
known vertebrates found in the car
boniferous and permian rocks OF the
Grand Canyon and DIR. David White
of the Geological Survey will present /
a paper on the age of the hermit |
shale in the Grand Canyon. DIR. Mer-
riam viii read paper on the sig
nificance of geological range, or life
period of animal species. DR.. Neil NJ.
Judd, who during the past few years
has uncovered a hitherto unknown
in the ruins Of Pueblo
Bonita in New Mexico will give a
papers. One viii deal with boring for
there.
Geology will the outstanding topic
at the afternoon session Tuesday.
Among the speakers will be DIR. Arthur
L. Day, head of the geophysical labo.
ratory of the Carnegie Institution of
who will present two
papers. One will Ideal with boring for
natural steam in California and the
other on recent volcanic activity in
Japan.
Wednesday will be devoted to the
annual business session.