Download Commentary (183 KB)
A brief commentary prepared by Robert Brecha, PhD, Professor, Physics, on the following work:
De Revolutionibus Orbium Coelestium (On the Revolutions of Celestial Spheres)
Nuremburg, 1543; first edition
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Contents of Streaming Media
Robert Brecha, professor of physics, explains Nicolaus Copernicus’s heliocentric theory and the impact of his observations on early scientific inquiry.