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"Noon cannon"
This dial, made by Rousseau, consists of a round marble slab engraved with a sundial and carrying a brass gnomon. A small brass cannon holding a tilting lens is attached to the slab. At noon, the Sun's rays, focused by the lens, ignite the gunpowder and thus cause the cannon to fire. For this reason [...]
Creator
- Rousseau
Publisher
- Museo Galileo - Istituto e Museo di Storia della Scienza
Subject
- Astronomy
- astronomy
Type of item
- Sundial
- sundials
Providing institution
Rights statement for the media in this item (unless otherwise specified)
- http://rightsstatements.org/vocab/InC/1.0/
- http://rightsstatements.org/vocab/InC/1.0/
Rights
- © Museo Galileo - Istituto e Museo di Storia della Scienza
Creation date
- early 19th cent.
- 1820
- 1801
Places
- French
Identifier
- urn:imss:instrument:402089
Extent
- diameter 302 mm
Language
- eng
- ita
References
- http://catalogue.museogalileo.it/biography/Rousseau.html
Year
- 1801
- 1820
Providing country
- Italy