Commentariolus

The `Commentariolus` (`Little Commentary`) is Nicolaus Copernicus`s forty-page outline of an early version of his revolutionary heliocentric theory of the universe. After further long development of his theory, Copernicus published the mature version in 1543 in his landmark work, De revolutionibus orbium coelestium (On the Revolutions of the ...
Found on http://en.wikipedia.org/wiki/Commentariolus

Commentariolus

(from the article `Copernicus, Nicolaus`) In the Commentariolus, Copernicus postulated that, if the Sun is assumed to be at rest and if the Earth is assumed to be in motion, then the ...
Found on http://www.britannica.com/eb/a-z/c/115
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