Scioptric Ball or Sky Optick, English?, Early 18th Century | |||||||||||
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| Inventory Number: | 78216 | ||||||||||
| Object Type: | | ||||||||||
| Place Created: | England United Kingdom Europe |
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| Accession Number: | 1925-43 | ||||||||||
| Brief Description: | Glass lens in a wood mount. Unsigned and undated. Early 18th century. A sky optick, or more usually 'scioptric' or 'scioptrick' consists of a long focus lens (or lenses) fixed in a universal mounting which can be placed in the window shutter of a darkened room. The sky optick will then project a reduced image of the landscape on to a wall or screen inside the room, so turning the room into a large form of camera obscura. Sky opticks could also be used for viewing eclipses and sunspots on a screen, and the more elaborate instruments were fitted with a diaphragm for reducing the amount of light transmitted. | ||||||||||
| Primary Inscriptions: | |||||||||||
| Provenance: | Lent by Christ Church, Oxford in 1925. | ||||||||||
| Collection Group: | Orrery Collection | ||||||||||
| Dimensions: |
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Permalink: http://www.mhs.ox.ac.uk/object/inv/78216