Many conflicting reports have been given in the literature concerning the effect of various factors on the rate of reversal of figure and ground in reversible perspective.
Flugel (7, 8) suggested that changes in eye movement increased the number of...
Illumination of books and manuscripts, Medieval--France; Manuscripts, Medieval; Illuminations 1200-1500
Leaf from a small portable Gothic Bible, copied in France in the thirteenth century. The Latin translation used throughout this period was known as the Vulgate, since Latin was the common or vulgar language read by all literate people of the time....
Clement VI, Pope, ca 1291-1352; Popes--Primacy--History; Popes--Temporal power--History
The papacy of Clement VI (1342-1352) was distinguished by
its political activism, its attempt to resurrect the impetus
for crusading, and its efforts to attract the best and
brightest talents to Avignon. The attributes which