3 ABSTRACTS FROM 'DIE NATURWISSENSCHAFTEN', VOLUME 36, NO. 11 (NOV '49): ELECTRON GENERATION IN IONOSPHERE R. SEELIGER ISOPACHS IN POTENTIAL FIELD OPTICS R. LANDWEHR AND A. DOSC NO SUPERCONDUCTIVITY IN NA-NH, SOLUTIONS E. JUSTI AND G

• Document Type: CREST
• Collection: General CIA Records
• Document Number (FOIA) /ESDN (CREST): CIA-RDP82-00039R000200020002-6
• Release Decision: RIPPUB
• Original Classification: R
• Document Page Count: 3
• Document Creation Date: December 22, 2016
• Document Release Date: May 15, 2012
• Sequence Number: 2
• Publication Date: April 29, 1952
• Content Type: REPORT

Declassified in Part - Sanitized Copy Approved for Release 2012/05/15 : CIA-RDP82-00039R000200020002-6
"Isopachs in potential Field Optics" R. Landwehr and A. Dosc
"No Supexconducta:vitY in Na-NH3 Solutions" E. Justi and. G. Vieweg
"Electron Generation in Ionosphere" R. Seeliger
Naturwissenschaften, Volume 36, No. 11, pages: 321-6;
D~.
32; 313'i. Ber1ifl : November 19L.9
3 Abstracts From 'Die NaturwissefSchaften', Volume 36, No. 11 (Nov'L9):
Declassified in Part - Sanitized Copy Approved for Release 2012/05/15 : CIA-RDP82-00039R000200020002-6
STAT.
 11
11 ?"
gESTRICI Lb
?IR1 I~iMr~~Y~ATIQN
AESTRAC LS FRON! DIE NATURI~xSSFNSCHAFTEid VOLUME 6 No. 11 (NOV + ER 19 9 )
3
R. Seeliger; R. Landwehr and A. Dose;
E. Justi arid 0. Vieweg.
Declassified in Part - Sanitized Copy Approved for Release 2012/05/15 : CIA-RDP82-00039R000200020002-6
"Generation of Electrons in the Ionosphere" R. 'Seeliger. Pages 3216.
The author attempts to explain the presence of the great amount of electrons
an the ionosphere, theoretically necessary for the occurence of most ionospheric
~
phenomena. He confines himself to the study of the E layer and gives a surgey
of the latest problems involved, derived from the study of elementary processes.
t'Determination of Isopachs (Lines of Equal Total Potentials) in Potential
2.
Field Optics" R. Landwehr (Menden i.W.) and A. Dose (Detmond). Page 3i4.2o
Optical investigations of potentials using polarized light on models gave
lanes of equal potential differences (isochromes) and lines of equal axial
'rections .isoclines). For complete determination of the potential field
d~.
a study of the interference pattern is necessary. Method was previously
applied by Frost(J. Franklin Inst. 216, 73 (1933); J. Appi. Phys. 10, 2t~8
(1939))and by Fabry(C. R. Acad Sci .Paris, 1901..57 (1930) ). Author describes
method using Askania--Werke equipment.
3. --No Superconductivity in Na-NH3 Solutions" E. Justi and G. Vieweg (Brauschweg,
Institute of. Applied Physics of the Tech Univ Muhlenpfodtstrasse 307).
Pages 3G.3-!i.0
. R. A. Ogg (Phys Rev 69, 2L~.3; 70, 93 (1946)) found in the solidified solution
at 90?K a transition curve to superconductivity, ascribing the residual resis-
tance to the resistance of electrodes. Further experiments denied Ogg~s theory.
Author describes method applied in the Braunschweig Low Temperature Lab-
Declassified in Part - Sanitized Copy Approved for Release 2012/05/15 : CIA-RDP82-00039R000200020002-6
 Declassified in Part - Sanitized Copy Approved for Release 2012/05/15 : CIA-RDP82-00039R000200020002-6
oratory by using a Diesselhorst compensator instead of a 1theatstone bridge.
Results proved absence of superconductivity in Na-NH3 solution.
Declassified in Part - Sanitized Copy Approved for Release 2012/05/15 : CIA-RDP82-00039R000200020002-6