the Beats in the Vibrations of a Revolving BelL 373 

 Glass No. 2. Gravest Tone g". 





Beats. 



Revolutions. 



Beats per 

 Revolution, 



Four nodes. 











9 



3'75 



2-4 





11 



4-49 



2-45 





12 



4-92 



2-44 





9 



373 



2-41 





12 



4-87 



2-46 





17 



6-97 



2-44 





14 



5-59 



25 





15 



627 



2-39 





11 



4-47 



2-46 





12 



503 



2-38 

 Mean... 243 



Six nodes. 









11 



2 29 



4-8 





12 



2 38 



5-04 





10 



212 



471 





10 



2-1 



4-70 





9 



1-87 



4-81 





7 



1-45 



4'83 





S 



1-66 



4-82 





11 



2-26 



4-87 





9 



1-84 



4-89 





9 



1-88 



4-79 



Eight nodes. 







Mean... 4-83 











12 



1(34 



7-32 





15 



2-11 



7-11 





14 



1-99 



7-03 





13 



1-88 



6-91 





15 



2-08 



7-21 





14 



1-94 



7-22 





15 



2-05 



7-32 





12 



1-67 



7-18 





13 



1-86 



0-99 





19 



2-69 



7-06 

 Mean... 7' IS 



Beats per Revolution. 



Difference. 



Theory. 



Experiment. 



4 2-4 

 6 4-8 

 8 7-005 



2-43 

 483 

 7-13 



•03 

 •03 

 •125 



