Millikan, Robert Andrews, Gale, Henry Gordon · Boston : Ginn and Co. · leaf 408
Tig. 374. Mechanism for form-ing gramophone records VegefxAle- TissueDiaphragin … The diamond point Fig. 375. The Edison diamond reproducer 356 PROPERTIES OF MUSICAL SOUNDS dictaphone and the ediphone, used to replace stenogi-aphers in businessoffices. The typist writes the letter by listening to the reproductionof the dictation. In the most familiar of the modern forms of the…
Physics
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