TRANSLATIONS 



156. Toepler's Schlieren Method. Basic Principles for Its Use and Quantita- 

 tive Evaluation [Das Toeplersche Schllerenverfahren. Grundlagen fur 

 seine Anvrengung und quantitative Auswertung], by Dr.-Ing. Hubert 

 Schardin. Forschungsheft 367. Supplement to "Porschung auf dem Gebie- 

 te des Ingenieurwesens (B) , " Vol. 5, Jul/Aug 193^, pp. 1-35- Trans- 

 lated by P. A. Raven. Jul 1947. 83 pp., 79 figs- 



157- Underwater Explosions [Sprengungen unter Wasser], by C.E. Bichel. Ma- 



rlne-Rundschau, Nos. 7-12, Jul to Dec 1905, pp. 13'+5-1357. Translated 



byF.A. Rayen. Unpublished. l6 pp., 5 figs. Reference copy available in TMB Library. 



158. On Thermal Damping in Spherically Symmetric Vibrating Gas Bubbles [Zur 

 thermlschen Dampfung in kugelsymmetrisch schwlngenden Gasblasen], by 

 H. Pfriem. Alcustische Zeitschrlft, Vol. 5, Jul 1940, pp. 202-212. 

 Translated by F.A. Raven. Unpublished. I7 pp., 4 figs. Reference copy 



available In TMB Library. 



159- Heat Transmission during High-Speed Pressure Changes in Gases [Der 



Warmeubergang bei schnellen Druckanderungen in Gasen], by H. Pfriem. 

 VDI-Zeltschrift, Vol. 87, No. 17/l8, 1 May 19^3, P- 268. Translated by 

 R. Widmer. Unpublished. 5 pp. Nov I952. 13 pp., 13 figs. 



160. Behavior of Several Propellers on One Shaft [Wirkung mehrerer Propeller 

 auf einer Welle], by H. Schmierschalski. Hamburg Model Basin, Report 

 185, Werft-Reederei-Hafen, Vol. 20, No. 17, 1 Sep 1939, PP. 278 and 

 279- Translated by L. Rubinowitz. Unpublished, copy in tmb translation fue. 



l5l. Measurement of the Brilliance and Duration of Electric Sparks [Messung 

 der Funkenhelllgkelt und Funkendauer ] , by M. Kornetzki, V. Fomln, and 

 R. Stelnitz. Zeitschrlft fur technische Physik, Vol. 14, No. 7, 1933, 

 pp. 274-280. Translated by F.A. Raven. Nov I95?. 13 pp., 13 figs. 



162. A New Mlcromanometer [Eln neues Mikromanometer], by A. Betz. Ergebnisse 



der Aerodynamlschen Versuchsanstalt Qottingen, Part 4, pp. 12-13. 

 Translated by R. Widmer. Unpublished. 4 pp., 2 figs. Reference copy 



available in TMB Library. 



163. Memoir on the Buonocore Propeller [Nota sull'Elica Buonocore], Fiat 



Motors, Inc., Torino. Supplied by United States Naval Forces Northwest 

 African Waters, 24 Jan 1944. Translated by F.A. Raven. Unpublished. 3 



PP . Reference copy available in TMB Library. 



164. Extensometer Measurement with Ring-Type Pickup [Dehnungsmessung rait 



Rlnggebern], by A. Theis. VDI-Zeitschrlft, Vol. 87. No. 11/12, 20 

 Mar 1943, p. 154. Translated by R. Widmer. Unpublished. 4 pp., 2 figs. 



Reference copy available in TMB Library. 



165. Effect of Bombs on Reinforced Concrete and Thickness of Concrete Re- 



quired for Safety [ Bombenwirkung gegen Stahlbeton und notwendlge 

 Schutzdlcken], by Dr.-Ing. 0. Speth. VDI-Zeitschrlft, Vol. 87, No. 

 13/14, Apr 1943. Translated by R. Widmer. Unpublished. 5 pp., 7 figs- 



Reference copy available in TMB Library. 



IV -16 



