Purbach

[ poor-bahk ]

/ ˈpʊər bɑk /

a walled plain in the third quadrant of the face of the moon: about 75 miles (120 km) in diameter.

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Question 1 of 7

What does “clement” mean?

Purbach and Mullerus, in the fifteenth century, contributed most to the advancement of astronomy in their day.
The Works of Robert G. Ingersoll, Vol. 1 (of 12)|Robert G. Ingersoll
Unfortunately, however, Purbach died before his journey to Rome.
The Century of Columbus|James J. Walsh
Purbach deserves the name that has been given him of the father of mathematical astronomy in modern times.
The Century of Columbus|James J. Walsh
Purbach had computed a table of sines to a radius of 600,000 parts.
Introduction to the Literature of Europe in the Fifteenth, Sixteenth, and Seventeenth Centuries, Vol. 1|Henry Hallam

He offered to secure them and also to provide for Purbach's support during the stay in Rome necessary for the study.
The Century of Columbus|James J. Walsh