Helmholtz's complete apparatus for the synthesis of sound
Helmholtz's complete apparatus for the synthesis of sound:- (a) 10 Tuning forks mounted between the poles of electromagnets on sliding mahogany stands, (b) Two large tuning forks with electrical mountings, (c) Key board with 10 keys 42" x 34".
Helmholtz, Hermann Ludwig Ferdinand vonKönig, Rudolph
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- View the original record:https://collection.sciencemuseum.org.uk/objects/co5934