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M. von Helmholtz's double siren
(Sirène double de M. von Helmholtz)
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1889 |
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taken from: Koenig, Rudolph. 1889. Catalogue des Appareils d'Acoustique construits par Rudolph Koenig.
(p. 0015, fig. 6) |
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? Helmoltz's large apparatus for compounding timbres of 10 different harmonies artifically and recording the sounds for the simultanuous production of a series of simple notes, that form a variety of harmonies.
(Grand appareil de M. von Helmholtz pour la composition artificielle des différents timbres des sons et notamment des timbres des voyelles.)
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1889 |
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taken from: Koenig, Rudolph. 1889. Catalogue des Appareils d'Acoustique construits par Rudolph Koenig.
(p. 0026, fig. 17) |
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(Helmholtz'sche Geradführung der Schreibspitze)
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1891 |
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taken from: Langendorff, Oskar. 1891. Physiologische Graphik: Ein Leitfaden der in der Physiologie gebräuchlichen Registrirmethoden.
(p. 0050, fig. 31) |
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(Helmholtz'sche Geradführung der Schreibspitze)
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1891 |
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taken from: Langendorff, Oskar. 1891. Physiologische Graphik: Ein Leitfaden der in der Physiologie gebräuchlichen Registrirmethoden.
(p. 0050, fig. 32) |
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Tuning fork interruptor according to Helmholtz with capillary contact
(Stimmgabelunterbrecher nach Helmholtz mit Capillar Contact)
|
1891 |
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taken from: Petzold, Wilhelm. 1891. Preis-Verzeichniss der Werkstätte für Präcisions-Mechanik von Wilh. Petzold: Abtheilung der Instrumente und Apparate für physiologische Experimente und Vivisectionen.
(p. 0022, fig. 73) |
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Myographe according to Helmholtz
(Das Helmholtz'sche Myographion)
|
1891 |
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taken from: Langendorff, Oskar. 1891. Physiologische Graphik: Ein Leitfaden der in der Physiologie gebräuchlichen Registrirmethoden.
(p. 0275, fig. 225) |
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Model showing mechanism of the drum and bones of the ear. After Helmholtz, by Jung, Heidelberg
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1892 |
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taken from: Anonymous. 1892. Harvard Psychological Laboratory in Dane Hall: Display of Wax Models. Photograph.
(p. 0001, fig. M42) |
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Five tuning-forks, with resonators, tuned to the characteristic notes of the vowels. After Helmholtz, by Koenig, Paris
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1892 |
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taken from: Anonymous. 1892. Harvard Psychological Laboratory in Dane Hall: Interior of a Laboratory Room. Photograph.
(p. 0002, fig. M47) |
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Series of ten resonators. After Helmholtz, by Koenig, Paris
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1892 |
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taken from: Anonymous. 1892. Harvard Psychological Laboratory in Dane Hall: Interior of a Laboratory Room. Photograph.
(p. 0002, fig. M49) |
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Phakoscope, for demonstrating accommodation of lens. After Helmholtz, by Sittel, Heidelberg
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1892 |
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taken from: Anonymous. 1892. Harvard Psychological Laboratory in Dane Hall: Interior of a Laboratory Room. Photograph.
(p. 0002, fig. M40) |
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