Article ID: CBB000931275

Mere Projections: Sunspots and the “Camera Obscura” (2007)

unapi

This essay addresses the very different ways in which Galileo Galilei and his rival Christoph Scheiner S.J. treated projection and engraving during their conflict over sunspots in 1612-1613. While Galileo sought, somewhat misleadingly, to present the optical and graphic practices as a seamless process, and the artifact itself as relatively remote from distortions introduced by individual observers and artisans, Scheiner suppressed his own early reliance on the camera obscura, insisted unduly on errors caused by his eye and hand, and thus minimized the impact of the images published with his work. Thus while Galileo presented his engravings as idealized and authoritative representatives of the accuracy, fixity, and diffusion associated with print, Scheiner?s several allusions to an archaic manuscript culture were designed to maintain his claims to priority in the observation of the sunspots, but to otherwise uncouple a still somewhat inchoate message about their essence from the medium of its appearance

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Description On different ways in which Galileo and Christoph Scheiner understood optical and graphical methods in science.


Citation URI
https://data.isiscb.org/isis/citation/CBB000931275/

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Authors & Contributors
Van Helden, Albert
Reeves, Eileen A.
Giudice, Franco
Oddbjørn Engvold
Cosci, Matteo
Jack B. Zirker
Journals
Galilæana: Journal of Galilean Studies
Journal for the History of Astronomy
Configurations: A Journal of Literature, Science, and Technology
Nuncius: Annali di Storia della Scienza
Nature
Isis: International Review Devoted to the History of Science and Its Cultural Influences
Publishers
University of Chicago Press
Concepts
Astronomy
Sunspots
Observation
Visual representation; visual communication
Scientific illustration
Telescopes
People
Galilei, Galileo
Scheiner, Christoph
Perrault, Claude
Kepler, Johannes
Grew, Nehemiah
Cesi, Federico
Time Periods
17th century
19th century
21st century
20th century
18th century
Places
Italy
Rome (Italy)
Institutions
Académie des Sciences, Paris
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