Beating strings and such

[KeyKat88@aol.com]

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Greetings,

           This may be a lofty question but here goes:  Is there any 
manufacturer that makes equipmnet so that a person can actually see a piano string 
vibrate in order to observe nodes and antinodes? What does one need to view this; 
a microscope (perhaps that is laughable)?  Would it be some sort of 
specialized equipment that say a college/university/research institute would purchase 
from a manufacturer that specializes this type of physics lab equipment? 

I am reading Hemoltz's On the Sensation of Tone and other books; On Pitch by 
Rick Baldassin, and Measured Tones by Ian Johnston. I would like to know more 
about inharmonicity. 

Thanks in advance.
Key

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