ACOUSTICAL IWKSTrGATIOX OF THF, JAPAXFh^F, I'.A.AIF.OO PIl'i:. ID 



TABLE I. 



Diameter of lioles=ômm. 



Distances of holes from the open end =0.7, G.75, 11. 7ö, 16.75 



and 21.75 cm. 

 rL = Length of air column for maximum resonance, in cm. 

 la = Quarter wave length minus the distance between the 

 closed end and the open hole nearest to it, in cm. 

 o : opened. 

 X : closed. 



/=i5° C 



