20

Hartmann Beyer (1516-1577)

Quaestiones Novae in Libellum de Sphaera.

Frankfurt: Ex officina Petri Brubachii, 1549.
One of three editions published in 1549, the first year of publication, octavo, title page printed within architectural woodcut compartment; rare; bound in modern boards covered in a sheet of printed text from an early book; 6 x 3 3/4 in.

As promised, Beyer's Questions is a series of basic queries scholars learning the little work on the sphere by Sacrobosco may ask. Beginning with simple concepts like: Quid est Logica? and Quid est Physica?, he then proceeds in a logical (and Aristotelian) fashion. Quid est mundus? Quid est Ecliptica? He takes students into more complex concepts, answering questions along the way, eventually providing his readers with Rheticus's tables, and detailed instructions about calculations. (For more see Valleriani, Federau & Nicolaeva's "The Hidden Praeceptor: How Georg Rheticus Taught Geocentric Cosmology to Europe," published in Perspectives on Science, 2022.)

  • Notes: Ex libris Professor, Astronomer, Historian & Bibliophile Owen Gingerich.
  • Condition: A4, B-L8, M4.

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