The medieval Islamic world of science began as a controversial field in which to work. Scientific practices went against people's beliefs because they stated things that were the opposite of the readings in the Quran. Religious people said that Allah himself created everything that exists while scientists said that everything happened naturally. Even though there was conflict over people's beliefs, Islamic scientists still managed to thrive and produce a golden age of science in the medieval Islamic world. The contribution of Arab-Islamic scholars to the genesis of modern science constitutes a passionately debated research topic, and in many encyclopedias of science and its history, Arab-Islamic scholars are credited only with having preserved Greek learning for the European medieval scholars. However, they added their own innovations, practices, and theories, and the contributions to the sciences were so significant and widespread that it is incredible to look back. These many fields include medicine, astronomy, mathematics, and civil engineering. Islamic scientists and doctors have made many important contributions to the world of medicine, greatly advancing the level of medical care. Doctors were trained and followed the teachings of Hippocrates and Galen. Their ideas were the basis of the Islamic medical system, which was very generous to the people. This system was operated according to the rules of the Quran. The Quran had very standard and obligatory rules, such as that the rich must take care of the poor and the healthy must take care of the sick. Most of the rich and powerful people have donated and provided support to build hospitals and public health projects. The Islamic... at the center of the map......Europe. Water clocks in Europe became very elaborate with complications that were often a source of fascination and enjoyment. There are records of an early medieval water clock in which figures of angels appeared on the hour, bells rang, knights appeared, and a little man, known as a knave, struck the hour bell with a hammer. This is reminiscent of one of al-Jazari's water clocks. The contributions to science from the Islamic world were revolutionary discoveries in new methods and technologies, also serving as benchmarks for all future scientists to build upon. The Islamic Empire made significant contributions to the fields of medicine, astronomy, mathematics, and civil engineering. The fact that they achieved such widespread results that lasted until the days of modern science surely constitutes those years as the Islamic golden age of science..