The Washington herald., 1922-04-22
cChcHc,uAds
Scientific
Notes
qndConmeW
SATURDAY. ArRIL =. Is.a.


SATURDAY.. APRIL =, 1922.
HeImInthoIeefesl Society Of WASH
ington. George Washington Unit
sversity. 2oz7 G street. T:3O o'clock.
Election OF oficers and final ae-
tion on the proposed code OF
ethics.
First bird study outing Of the An
dubon Society Of the District OF
Columbia today. walk along
Eastern Branch. Assemble al
White House station, Fifteenth
and II streets northeast at s a. m.
American Physical Society, Bure,u
OF Standards. today. Morning seq
sion. 10 o'clock. The Reversible
Inductivity Of Rochelle Salt under
High Frequency Fields" by John
@. Frayne. University OF Mime
sofa. Reciprocal Dlffrsction Re-
lations Between Circular and FL
liptical Plates" by John Coulson
and @. q. Becknell. University OF
Pittsburgh. "A Flow Calorimetsr
for Measuring the Heat Capacity
of Gases" by H. f. Stimson. T. S.
Sigh and ". S. Osborne, Bureau
OF Standards. Elastic Constants
OF Solid Rods at High FreQuen-
cies," by W. @. Cady. Wesleyan
University. The influence Of the
Surface Tension on the Efnux Of
a Liquid in Jet-Form." by Julius
Hartman. Royal Technical Col
lege, Copenhagen. A Study Of
the Luminous Discharge in Hy-
drogen and in Mercury and a New
Method Of Measuring Ionization
Potentials." by George z. Gibson
and w. Albert Noyes. Jr. Univer-
slty of California. 'Excitation Of
the Spectra OF Hydrogen and II
Nitrogen in Low Voltage Arcs"
by o. S. Duffendack. Princeton
University. The Relative Inten-
stiles Of Stark Effect ComponentS
in the Helium Spectrum" BY John
Stuart Foster, Yale University.
Cath hodoluminescence Of Heated
AIumina." by ID. T. wiIber, Cor
nell University. Radiation rrom<
Oxides. !. Emissive Power in
Red Of Zirconium Oxide" by WI
Z. Forsythe. Sela Research Lab
oratories. Variation Of Contact
Difference Of Potential with TEN
perature in Potassium and So
dunn, and the AccompanyTnC
Changes in Photo Electric Ennis
sion" by Herbert f. Ives. Amer
ican Telephone and Tele-rsrh
Company. a Precision Rotating
Sector: AperRture Variable and
Measurable While in Motion. b.
A. II. Pfund. Johns Hopkins Uni
versity. Specific Intensity Of
Radiation in an Absorbing Me
dunn" by Leigh PAGE. Yale Uni
Nersity. Phenomena in Gases
Excited by Radio Frequency cur
rents" by z. o. Hulburt. St7te
University Of Iowa Afternoon
session. O'Clock: On the Ero~f
OF Short ElectromaEnetic Way"=
on A Beam Of Electrons." by g. J.
I-spp. University of Illinois -
feet Of the Initial Emission Vc-
locities Of Electrons on tho Mini
mum ArcinE Voltage in Case "
by X. T. Compton and v T Va
Princeton University. The indie
pendence Of the Arcing No'fs-,
in Mercury Tapor on the Near
ess Of the Liquid Surface" ~ 4,
T. Yso. Princeton Un.Nersity
''Mobilities NJ EIectrons In Hydro
ger" by Leonard r Loeb. TN ,
Nersity of Chicago. The Elerr-ou
Emission from Thoriated TUnc-
stem Filaments." by Irving I.sn--
muir. General Electric Compar'
The Removal Of Thorium from
the Surface of a liberated Tunz-
sten Filament by Bombardmcnr
with Positive Ions" by X. "
kingdom and Irving Laasmuir
General Electric COMPANY "Tho
Measurement Of Magnetic Field
Strength by Means Of .Electrou
Tubes" by Albert W Hull Cen
eral Electric Company. a Cen
eral Relation for EleCtron Ennis
sion from Metals" by Saul Dush-
man. General Electric Company.
The Secondary Elect-on Emission
from Nickel" by c. DaviSson and
c. H KUnsman. American Teie-
phone and Telegraph Comnany.
"Ar Experimental Method -
Testing the Expressions for Lon
Citudinsl and Transverse Masses
Of the EleCtron." by I. T. Jones
ard W. c. Pomeroy. University ~
California "Oil Drop ENreri-
ments as Proof Of the 1nvariance
OF Electric Charge" by F. Va
Loomis. New York Cniversitv
Study OF the Hydrogen Radis-'
tion in the Red and the Infrs-
Red" by F. s. Bracket. Johns