Source Information

Harriot, Thomas, HMC 241 II, Calculations from the observations of Hannelius, Warner, Copernicus, Tycho Brahe, on the vernal & autumnal equinoxes, the solstices, orbit of the earth, length of the year etc.

Digitized copy: Petworth House Archives
Digitized by: Max Planck Institute for the History of Science
Copyright: (images) Petworth House Archives
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