Sound and Science

Hand-drawn circuit of a singing and speaking arc for the Istituto  [...]

Printed information: “Ditta Alberto dall’Eco (Ing. Giorgio Santarelli, Successore) Firenze 10 – Via Giotto – 10 Officina di strumenti di precisione Medaglia d’oro di 1° Grado all’Espositizione Internazionale d’Elettricità di Como deposito di materiali  [...]

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Apparatus for singing- and speaking-arc experiments from the Max Kohl catalog

Source: Max Kohl A.G. : Physical Apparatus. Price List No. 50, Vols. II and III. Chemnitz, n.d. [1911], p. 1058.   Description on p. 1057: “Complete Apparatus for Experiments  [...]

artefacts

Speaking arc and singing arc

The talking bow and the singing bow. The talking bow apparatus consists of a manually adjustable electric arc, a telephone microphone with a small transformer and a  [...]

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