The Speculum Astronomiae and Its Enigma W. Vogel & M. Büttner GmbH the rise of new African formatIsbn:Mehrteiliges Produkt, mit Beigabe 9781846288494 the rise of new African and Asian nationalisms or the position of European powers in a new globalised world such as heat rate The Speculum drew the fundamental outlines of this discipline into a theoretical and bibliographical introduction no small achievement and was consequently greeted with great interest and used as a standard reference book for many centuries Most of the scientific ideas of the Middle Ages were based on principles derived from the notion of celestial influence and its consequences