Camera Lucida
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One inscription reads \"Vincent et C. Chevalier / Quai de l'horloge N 69, \u00c3\u00a0 Paris.\" Another reads \u00e2\u0080\u009cC. CHEVALIER / 829.\u00e2\u0080\u009d Vincent Chevalier, a noted optical instrument maker in Paris, based the form on the design introduced in 1819 by Giovanni Battista Amici (1786-1863), professor of mathematics at the University of Modena. It has a heavy glass prism and two external optical elements: one has a clear lens and a blue glass filter; the other has two blue filters."}, {"label": "Description", "content": "Ref: John Hammond and Jill Austin, <i>The Camera Lucida in Art and Science</i> (1987), pp. 37-41."}, {"label": "Description", "content": "Vincent Chevalier, <i>Notice sur l\u00e2\u0080\u0099usage de la Chambre Claire (Camera Lucida)</i> (Paris, 1834)."}, {"label": "Description", "content": "J. G. A. Chevallier, <i>Le Conservateur de la Vue</i> (Paris, 1815), pp. 305-309."}, {"label": "Location", "content": "Currently not on view"}], "topic": [{"label": "subject", "content": "Science & Scientific Instruments"}], "place": [{"label": "place made", "content": "France: \u00c3\u008ele-de-France, Paris"}], "physicalDescription": [{"label": "Physical Description", "content": "brass (overall material)"}, {"label": "Measurements", "content": "overall: 10 19/32 in x 3 3/4 in x 1 3/4 in; 26.924 cm x 9.525 cm x 4.445 cm"}, {"label": "Measurements", "content": "overall: 1 3/4 in x 10 1/2 in x 3 7/8 in; 4.445 cm x 26.67 cm x 9.8425 cm"}], "dataSource": [{"label": "Data Source", "content": "National Museum of American History"}], "objectType": [{"label": "Object Name", "content": "camera lucida"}]}}, "url": "edanmdm:nmah_1184187", "hash": "df53afc2a70036f8ae998319077b73f0d7ce4d8b", "docSignature": "fedd4a49b63c5caed2a7c2fdb9b931fe", "timestamp": 1663782461, "lastTimeUpdated": 1653680532, "title": "Camera Lucida"}