Re: How frequency is affected in a metal rod

AI Thread Summary
The frequency of sound produced by a metal rod changes based on the length of the vibrating section, which can be altered by where it is held. Keeping the hand in a constant position while striking different parts of the rod will still result in changes to the frequency due to the varying lengths of the segments that vibrate. This variation affects the timbre of the sound produced, leading to a spectrum of frequencies. The interaction between the struck area and the fixed hand position is crucial in determining the resultant sound. Understanding these principles can enhance the study of acoustics in metal rods.
Mike Anderson
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I understand that the frequency of the sound produced when hitting a metal rod will change as you hold different parts of the rod to increase or decrease the length of it. However, what puzzles me is whether the frequency will change if you keep the position of your hand constant while hitting different parts of the rod?

Please help me in this. Thanks.
 
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Given that a spectrum of frequencies are produced (the timbre of the sound), yes.
 
Thread 'Motional EMF in Faraday disc, co-rotating magnet axial mean flux'

Thread 'Motional EMF in Faraday disc, co-rotating magnet axial mean flux'

So here is the motional EMF formula. Now I understand the standard Faraday paradox that an axis symmetric field source (like a speaker motor ring magnet) has a magnetic field that is frame invariant under rotation around axis of symmetry. The field is static whether you rotate the magnet or not. So far so good. What puzzles me is this , there is a term average magnetic flux or "azimuthal mean" , this term describes the average magnetic field through the area swept by the rotating Faraday...
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