22 M. Dvorik—Acoustic Repulsion. 
Art. II.—On Acoustic Repulsion; by V. DvokAx. 
(Translated from Annalen der Physik und Chemie, Band III, No. 3. Dated 
Agram, 19th November, 1877. With a note by ALFRED M. MAYER.) 
(1.) Acoustic repulsion of resonators which are open at on 
end only. —Ina a previous article ““On Acoustic Attraction wail 
Repulsion,” I have conclusively proved by theoretic considera- 
tions as well as by experiments, that the average pressure at 
the node in a column of air vibrating i in stationary waves can- 
not be equal to zero as long as the amplitude of vibration is 
not infinitely small. 
In a resonator, open at one end, as for example a cylinder, 
we find a node at the closed end. In the interior of the eylin- 
der near its closed end there exists a greater pressure than on 
the outer surface of this end which is couched by the outside 
repulsion. In my previous communication I have indi- 
caluid: means for observing the acoustic repulsion of resonators. 
2. 
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