Spread Of Islam Essay Example For Students

Spread Of Islam Essay Islam is known as one of the fastest-expanding religions in history. Only contained in Arabia in 632, its conquests led to its expansion to Persia and Egypt by 656, and to Africa, Spain, and other parts of Persia by 750. Many methods were used in order to spread to such an extensive empire. Muslims were very reasonable people. They were tolerant, and offered many alternatives to the other religions of conquered lands. Mohammed once stated that another religion can either believe in Islam, or pay to keep his own religion. He would give the religions protection in exchange for obedience. Mohammed, however, threatens the lives of children or elders related to those who did not obey (Document1). This was one of his most powerful methods of obtaining new lands. We will write a custom essay on Spread Of Islam specifically for you for only $16.38 $13.9/page Order now Another method used by Mohammed was that he offered many reasons to other religions as to why they should convert to Islam. First and foremost, he offered them direction and guidance to heaven, which, alongside Muslims, was an eagerly anticipated place by Christians and Jews (Document 2). The writer of History of Arabs (Document 3) describes the Muslim people as those who consider each other equals under Allah, and who worship him to the fullest. They would rather be in heaven with him than a child under him on earth. The expansion of Islam was also obviously obtained by means of conquering lands around Arabia. The impression of surrounding lands on the Muslim army is that they were strong, determined, relentless fighters who conquered any land they pleased. They had countless weapons and a drive that could cut through thick steel (Document 4). Despite these characteristics, however, they would only fight upon attack, in self defense (Document 6). The expansion of Islam was viewed by many as the most reasonable expansion of any religion. It was believed that the Christians were below the Muslims in that they fought whenever possible, and persecuted all other religions. Despite the belief of spiritual drive for conquest, some believe the expansion of Islam was due to the deep desire for a more modern life (Document 7); they were driven to settle in the fertile crescent in order to obtain these modern luxuries, rather than make spiritual achievements more primitive areas. There were many ways by which the Muslims conquered surrounding lands. Alternatives, benefits, and warfare were simply three such means of achieving such power and conquest. Religion

Generating awareness about science in India essays

Generating awareness about science in India essays Science has given us powers fit for the Gods. Science, systematic study of anything that can be examined, tested and verified. From its early beginning, science has developed into one of the greatest and influential fields of human endeavour. Today, different branches of science investigate almost everything that can be observed or detected, and science as a whole shapes the way we understand everything. Science develops through objective analysis instead of through personal belief. Science gives us a detailed insight into the way the world around us works. Today, science has a profound effect on the way we live, largely through technology the use of scientific knowledge for practical purposes. The powers of science are not used properly. Why? It is due to the lack of awareness. Awareness should start from the grassroot level ie. Villages and rural areas, because, they are the areas where the majority of Indias population lies and where the innocent masses are still in the grip of superstitions. Although internet and telephone connections have been provided to some villages by the government, a lot still has to be done in this regard. Teaching should be such that what is offered is perceived as a valuable gift and not as a hard duty. Natural resources are being exploited. People everywhere need to think about this. For the purpose of awareness regarding this and many other subjects, various methods can be adopted. Lectures can be organized in schools, these children can then organize rallies in villages, NGOs can be asked to work only for this cause. Educational trips to factories can be organized so that students learn to use the resources judiciously. When you educate a man, you educate an individual, but when you educate a woman, you educate a family. ...

Process control Essay Example | Topics and Well Written Essays - 2500 words

Process control - Essay Example This flow is usually expressed by plotting the valve travel on the (y-axis) against the flow percentage under constant pressure differential on the (X-axis). There are two main types of the inherent flow characteristics; these are linear and equal percentage. A control valve is said to be linear if its inherent flow characteristics can be represented on a graph by a straight line. The flow is usually directly proportional to the valve travel. It is a straight line when represented on a rectangular coordinate of flow rate F or % F or Cv or % Cv versus or against the percentage travel at the optimum condition of constant drop in valve pressure (DPv). It can be deduced that an equal increase in travel rate or opening position, m, results in an equal increase in flow F (or Cv) at constant valve pressure drop (DPv). If m represents travel and F represents the rate of flow, then, dm= k dF where K is a proportional constant. Therefore the valve gain or sensitivity is independent of flow rat e and valve opening. Shown by; Kv = Df/dm = constant The valve gain (Kv) is the slope or tangent of the rectangular coordinate or plot drawn. The slope of the graph remains constant and independent of the flow rate. A control valve is said to be equal percentage if equal increase in valve travel or opening m (or Z) produces or results in equal percentage increase in flow F. If the situation emerges at the optimum condition of constant drop in valve pressure (DPv), the valve is said to be inherently equal percentage. The valve gain is not constant in this case but increase with an increase in flow rate. Therefore, when the control valve is just beginning to open at low flow rate, the valve gain is quite low and the change in flow is quite insensitive. At high flow during the upper portion of the travel, the valve gain is high which translates to rapid flow or sensitively for the same increase in valve travel. When plotting the flow rate against valve travel or position, the slope is flat near the initial travel position, but the slope increases drastically with the flow as the valve opens on the upper section of the travel. It can be shown by a straight line plotted on a semi-logarithmic paper for log F against m. The Quick open control valve characteristic is flattened in shape as opposed to the contoured valve plug. The flow of this valve increases rapidly up to the highest flow level with the least initial opening of the valve. In the lower section of travel position, the valve gain is so high for application and utilization in modulating control. The slope is then flat where the flow rate hardly increases with valve openings. Therefore, the Quick open control valve is restricted to a service of ON and OFF and in a specified application that needs discharge of flow. Applications of Control Valves Linear plugs are mostly used on the systems where the valve pressure drop in a major section of the total system pressure drop , where the valve is the major pressu re loss mechanism. Linear control valves are used in about 10-15 % of all applications. Linear control valves are also used in gas process. In the gas process, there is a large volume, decreasing DP with an increasing load DP at maximum load. The maximum load DP is greater than 20% of minimum load DP. It is also applied in the gas compressor recycle control valve. Also, the linear valves are