DEVELOPMENT OF AN ULTRASONIC MICROSCOPE AT THE ACADEMY INSTITUTE FOR MEDICINE AND BIOLOGY BERLIN-BUCH EARLY DECEMBER 1954

• Document Type: CREST
• Collection: General CIA Records
• Document Number (FOIA) /ESDN (CREST): CIA-RDP80-00810A005900420008-6
• Release Decision: RIPPUB
• Original Classification: S
• Document Page Count: 2
• Document Creation Date: December 21, 2016
• Document Release Date: March 5, 2008
• Sequence Number: 8
• Publication Date: February 28, 1955
• Content Type: REPORT

Approved For Release 2008/03/05: CIA-RDP80-0081 OA005900420008-6
CENTRAL INTELLIGENCE AGENCY
This material contains information affecting the National Defense of the United States within the meaning of the Espionage Laws, Title
18, U.S.C. Secs. 793 and 794, the transmission or revelation of which in any manner to an unauthorized person is prohibited by law.
DATE OF INFO.
PLACE ACQUIRED
DATE ACQUIRED
Development of an Ultrasonic
Microscope at the Academy
Institute for Medicine and
Biology, Berlin-Buch
REPORT
DATE DISTR. 28 February 1955
NO. OF PAG S
REQUIREMENT
REFERENCES
This is UNEVALUATED
Information
1. In connection with his experiments on the ultrasonic microscope, Ing. Winter (fnu),
of the East German Academy Institute for Medicine and Biology, Berlin-Buch, has
not yet succeeded in developing an immersion objective lens which can withstand
ultrasonic radiations for a long period of time. Six lenses were manufactured by
VEB Carl Zeiss Jena for Ing. Winter, at a cost of 900 DME each. All six were
delivered to the institute; these lenses can only be used for ultrasonic research
of short duration.
2. A special immersion liquid of high refractive index must be used in conjunction
with the immersion objective lens. Experiments have shown that the usual immersion
liquid consisting of pure cedar oil with a refractive index of around 1.2 could
not be used. A special immersion liquid for the ultrasonic microscope was developed
at VEB Carl Zeiss Jena in cooperation with Winter. This liquid also consists mostly
of cedar oil, but it has unidentified additives. The refractive index of this
immersion liquid is 1.515.
3. 'A glass cover plate (Deckglas) is needed when preparations are investigated witli
the immersion objective lens. This cover plate was also developed by VEB Carl
Zeiss Jena for the Institute. It is made of quartz with a strength of one-quarter
to one-half of the ultrasonic wave length. Zeiss developed twelve glass cover
plates for the Institute. The glass cover plate is placed upon the oscillation
quartz, and the preparation to be investigated is placed upon the glass cover plate.
The immersion liquid is between the glass cover plate and the immersion objective
lens.
4. A trough made from ground quartz, which is used in conjunction with the dry
objective lens of the ultrasonic microscope, can be filled from the side with
liquids containing substances and/or living matter to be studied while under the
influence of ultrasonic radiation. The trough (Kuvette) which was also made by
VEB Carl Zeiss Jena especially for the Berlin-Buch institute, costs about 90 DME.
FBI AEC
(Note: Washington distribution indicated by "X"; Field distribution by "$k"?1
INFORMATION RLP__O_RT INF.ORM__?!~JION REPORT
Approved For Release 2008/03/05: CIA-RDP80-0081 OA005900420008-6
 Approved For Release 2008/03/05: CIA-RDP80-0081 OA005900420008-6
Approved For Release 2008/03/05: CIA-RDP80-0081 OA005900420008-6