Stephen, I posted the original query with regard to high speed photography of a hammer blow. I'd be interested in knowing more about your computer model. Do you still have it? John Gunderson, New Jersey Chapter Stephen Birkett wrote: > John G asked: > > ...Is there any high > > speed photography of a hamnmer blow. If so please post where the results > > and conclusions might be published. > > > Memories are short. I gave a talk about that topic in Dearborn at the CAUT > forum. I presented a computer model of the hammer/string interaction, with > various graphs showing the results of varying parameters like hammer mass, > string tension etc. Computers have come a long way since then, and it > could easily be made interactive, with slow motion video output to a > computer screen, instant results of varying any of the critcal parameters > - giving results similar to that famous video that everyone has heard of > and no one has seen. It wouldn't take much to program the model output > into some commercial animation softwar. I expect the slow motion results > from the model will be very similar to the playback of that slow motion > photgraphy film. > > There are quite a few journal articles published on the topic, if you are > interested I ca supply some referecnes. > > Incidentally, if someone actually has the kimball video, why not convert > to an mpeg and post somewhere to make it available. > > Stephen > > Stephen Birkett Fortepianos > Authentic Reproductions of 18th and 19th Century Pianos > 464 Winchester Drive > Waterloo, Ontario > Canada N2T 1K5 > tel: 519-885-2228 > mailto: birketts@wright.aps.uoguelph.ca
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