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The actual size of Foucault siderostat
(by user "Calculus", in "English Mechanics and the World of Science", Volume 31, n.803, p. 548, August 13th, 1880)
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in "Lehrbuch der Physik und Meteorologie; Theilweise nach Pouillet's Lehrbuch der Physik", by Pouillet, M. (Claude Servais Mathias), 1790-1868; Müller, Johann Heinrich Jacob, 1809-1875
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Grubb (source - Zeitschrift für Instrumentenkunde - 1881)
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Fuess (source):
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(source) -
(source: "Instruments of Precision Laboratory Apparatus", W.M. Gaertner & co) -
(source; remotely operated! unknown inventor) -
- Alt/Azimuth, remotely operated, unknown inventor (source) -
Muller's heliostat ("Equipments for physics and chemistry class-rooms", see also "Zeitschrift für die physikalische und chemische Analyse. U., 8, p. 354. - M. T., Fig. 124") -
(source) Stoney's heliostat - setup description here; other hires images; geometric description: ? -
- Gray's heliostat in "Journal of the Royal Microscopical Society" byy Royal Microscopical Society (Great Britain) , 1904 -
Alternative method proposed by Johnstone Stoney to guarantee rectilinear motion of connection between mirror tail and clockwork driver arm, in place of hollow cylinder moving along a bar; article "On making the siderostat an instrument of precision" in "Monthly Notices of the Royal Astronomical Society":
Modern view:
- Otto von Littrow, "Ueber einen Heliostaten nach August's Principi", in "Repertorium für Experimental-Physik, für physikalische Technik ...", Volume 1, pp.46-56; full German text, with pictures: link
- Colonel Archibald Campbell (1865-1940) from Blythswood; device built by Adam Hilger. Link
UNITED KINGDOM - JUNE 09: Photograph of a universal heliostat made by the English instrument makers, Adam Hilger in London. Lord Blythswood, Archibald Campell (1865-1940), a Scottish scientist designed this instrument. It was used to direct sunlight into an ancillary instrument, such as a spectrograph, for analysis. It uses a flat mirror, driven by a clockwork mechanism, to follow the Sun as it move across the sky. This heliostat was displayed at the 1876 Loan exhibition that was held on the site of today's Science Museum at South Kensington, London. (Photo by SSPL/Getty Images)
- BERTHOLLET and MALUS ():
- Ekling ():
- Tornaghi ();
- Hilger (1919):
- Thomas Comber ():
- Silbermann (Annales de chimie et de physique - p.300 e tavola III in fondo al libro)
- George Johnston Stoney (1869)
- Grassmann (inventor), Rudolf Fuess (builder) (1870-1872):
- Brashear (1910):
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Alfonso Borrelli ()
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Pietro Prandi (Nuova Collezione d'Opuscoli scientifici - Bologna , 1824 )
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Giovanni Santini ("Teorica degli stromenti ottici destinati ad estendere i confini della visione naturale" (figure parzialmente visibili))
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Gambey Elementi di fisica sperimentale e di meteorologia, M. Pouillet (figura parziale), Description de l'héliostat de M. Gambey, di Hachette (M., Jean Nicolas Pierre) (versione digitale non disponibile), Bulletin de la Société d'encouragement pour l'industrie nationale, Volume 23, p.105 (figure tavola 299 a p.108)
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Corso elementare di fisica di Ranieri Gerbi 3 (p.32) (figure 5 e 7, non visibili)
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Antonio Tessarolo - Physics instrument makers in 19th-century Veneto: Two case-studies, by Fanny Marcon