The Treatise on the Astrolabe, of Geoffrey Chaucer —— Edited With Notes and Illustrations

----- Geoffrey Chaucer的星盘论文

ISBN: 9781331927693 出版年：2016 页码：113 Andrew Edmund Brae Forgotten Books

Now, the most remarkable anomaly attributable to Chaucer, is his adoption of 23° 50' as the obliquity of the ecliptic that being very much in excess of its known quantity in his time.