1047 
R-R, 
= r ~ A xp (I-11) 
c@ 
This is the equation previously used as a cavitation criterion in connection with the photo- 
graphs of the UERL diaphragm gage which is a baffled gage. 
Editor's note: Appendix II, pages 66 to 86, by R.R. Halverson, 
appears as a separately published paper in this volume, 
just preceding this paper. 
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