V 



No. ,3 



Wave Machines. 



417 



53 178. 1 : 6. 



53179. 1:11. 



53 180. 1 : 7. 



53.179. Stroboscopic Cylinder, on stand, Figure, with 18 wave strips, after Quincke s. d. 

 (M. P. II, 1, Fig. 295 [394]) 0. 18. 



For demonstrating pendulum oscillation, longitudinal and transverse oscillations, vibrations of 

 ether particles, reflection of cord waves, vibration of strings and of air strata in pipes, vibration of 

 liquid particles and of progressive transverse waves. 



52.019. - - idem, fitting the Whirling Table, with 18 wave strips, after Quincke .... 0. 14. 



52.020. Strips alone, 18 in number, in case, with description 0. 6. 



53.180. Wave Apparatus for Explaining the Vibration of Sounds, Figure (W. D. Fig. 255 



[241]) 2. 10. 



53.181. Wave Machine after Pfaundler (M. P., 10 th Edn., I, Figs. 624 a e and 803; Ztschr. 

 f. d. phys. u. chem. U. 1, 1888, p. 98), for deriving combined transverse waves, 

 especially for the compounding of the wave of a fundamental tone with the waves of 



the uneven overtones 5. 10. 



53.182. Wave Machine after Grimsehl, for the synthesis of vibrations, with the rod for the 

 sine shaped wave of a fundamental tone and for two ovei tones (Ztschr. f. d. phys. u. 



chem. U. 17, 1904, p. 34; Physikal. Ztschr. 1904) 8. 15. 



Cl. 336, 1033, 

 1036. 



27 



