De revolutionibus orbium coelestium have begun work on his new system by that time. Most historians believe that he wrote the "Commentariolus" after his return from Italy, possibly only after 1510. At this time, Copernicus anticipated that he could reconcile the motion of the Earth with the perceived motions of the planets easily, with fewer motions than were necessary in the "Alfonsine Tables", the version of the Ptolemaic system current at the time. In particular, the heliocentric Copernican model made use of the Urdi Lemma developed in the 13th century by Mu'ayyad al-Din al-'Urdi, the first of the Maragha astronomers to develop a non-Ptolemaic
Entertainment in the 16th century stocks. Another popular public event with spectators, was the witch trial by use of water trial.(Lambert, 2007). Entertainment in the 16th century British Entertainment in the 16th century included art, fencing, painting, the stocks and even executions. While the 16th century and early 17th century squarely fall into the Renaissance period in Europe, that period was not only one of scientific and cultural advance, but also involved the development of changing forms of entertainment – both for the masses and for the elite. Despite the great breadth of advancements in the arts during this time, the economic conditions of this