Research Paper on A Raisin In The Sun Example | Topics and Well Written Essays - 750 words

On A Raisin In The Sun - Research Paper Example According to Miller (32), tragedy involves common people, not necessarily heroes. A â€Å"Raisin in the Sun† satisfies the requisites that Miller suggests. For example, in the play, the tragic hero appears to be normal, he does not have any superior qualities that would differentiate him from other characters in the play. Lorraine Hansberry creates common people who experience similar problems to people in the real world. The entire Younger family lives a poor lifestyle and only hopes for a better life than their current one in future. This is evident from the plant that Mama keeps in the play. This plant appears to symbolize the lack of direction that this family has. It has half a life and it grows in all directions that appear to have light (Hansberry 48). Lorraine Hansberry’s play â€Å"A Raisin in the Sun† presents the younger family that has struggles with acceptance throughout the play. She creates the title of this play from Langston Hughes’ poem â€Å"Harlem†. Throughout the play, Lorraine Hansberry struggles to make her audience understand the challenges faced by the Younger family in their rented ghetto apartment (Rorty 29). Each member of the family seems to have intense issues that he /she must address to avoid conflicts within their families. For example, the tragic hero in this play wishes to head the family after their father dies. Walter Lee feels emasculated probably because of the presence of several women in his life. His mother controls all the cash that flows to this family, making the tragic hero to question his role as a man in the Younger household (Hansberry 42). Aristotle focuses on the element of Harmatia in tragic plays. He also suggests that the ideal tragic play must involve catha rsis. This implies that the readership of the respective play must connect with the characters by sympathizing. Aristotle also seems to indicate that successful tragic plays should reveals extremely sympathetic situations for their respective protagonists. This facilitates a quick purging of emotions that must be present for the success of a tragic plays. In his definition of tragedy Aristotle suggests that perfect tragic heroes must experience serious loses in their lives. For example, a tragic hero must fall from a high ranking to an extremely low one. The tragedy is implied in the fall that the hero experiences. Normally in all these tragedies, the fall is a punishment to the hero who disrespects either the gods or fundamental rules of society (NYTC 3). Critics Some critics disagree on the perfection of â€Å"A Raisin in the sun† as a perfect tragedy. The reasons attributable to these allegations are the evident differences between this play and Shakespeare plays whose str ategic heroes were always superior and could never compare to the common person as Lorraine Hansberry does in this play (Hansberry 46). Other critics argue that in this, there are intense elements of positivity that should not be in tragedies. There could be certain sad scenes but when the play ends, the Younger family has resolved almost all of their issues. Mama cannot forget the flower because of the extreme that it suggests for the family. According to these critics, this play cannot be tragic because there are no major loses to the Younger family that Lorraine Hansberry highlights. The final category of critics suggests that the characters in this play do not have any flaws. Ideally, characters in tragedies must have flaws that make characters commit regrettable

Chemical and Material Engineering Essay Example | Topics and Well Written Essays - 1000 words

Chemical and Material Engineering - Essay Example The process of analyzing the mechanical qualities of nc by researchers is gradual since this process is experiencing various obstacles. Manufacture of the nc materials is one of the Chief impediments of the experimental evaluations of its properties. The preparation of nc involves factors, for example, porosity, contamination and residual stress, which significantly influence its mechanical capabilities (Lu, Lu & Sui, 4127). Indeed, a valid evaluation of the mechanical qualities of the nc requires a sample that is deficient of the contamination and residual stress. Such a sample will have to be large to ensure several tests are done on it. A significant quantity of nc pure copper was synthesized through an electrodeposition technique. Copper (Cu) metal has unique characteristics that make it suitable for in manufacturing the nc sample. Cu has an extensibility quality when undergoing cold rolling at average room temperature (Lu, Lu & Sui, 4127). The deformation feature of Cu has been researched at length through high-resolution electron microscopy (HRTEM). Experimental Procedures According to (Lu, Lu & Sui, 4128), the manufacture of nc copper entails the electrodeposition process through an electrolyte of CuSO4. This is a chemical procedure where the substrate of Cu is deposited on the cathode, which has a capacity of 99.99wt%. The electrolyte had an acidity of 0.9 mol/l and the solution temperature was a moderate 20Â ±1. The purity of the deposits of nc Cu was better than that of 99.993 at% (exclusive of oxygen). If the oxygen content were inclusive, the nc Cu sample would be at 99.98 at%. The Archimedes principle was the standard that researchers were utilizing to measure the density of the nc Cu sample (Lu, Lu & Sui, 4128). The density of the sample was 8.91?0.03 g/cm3, which is indifferent from that of pure Cu, which is 8.96 g/cm3. X-ray diffraction and HRTEM analysis were essential in determining thee microstructure of the Cu sample. The determination of t he nc Cu samples thermal characteristics was through differential scanning calorimetry (DSC). Plastic deformation of Cu was through cold rolling, which resulted in its extension in length. Results and Discussion The X-ray diffraction was displaying a Cu sample that was exhibiting {110} texture. This sample was showing a substantial broadening of a mean of 28 nm grain size and 0.14% of microstain. This was at a degree of deformation of 2300% (Lu, Lu & Sui, 4128). However, after the cold rolling process the microstain levels in the sample increase but the grain size remains constant at 28nm. Coldrolling of a coarse-grained Cu in similar conditions was producing different results. The microstain level did increase by 0.04% to 18% while the sample disintegrated to a degree of deformation of 800%. Thermal analysis The evaluation of the thermal characteristics was of a temperature bracket of 50Â °C to 250Â °C at a constant combustion of 5Â °C/min (Lu, Lu & Sui, 4130). The implications of these processes were subject to a DSC scan, which was showing no oxidation of the nc Cu samples. There was annealing of nc Cu at various temperature and afterwards cooled by the DSC process. Increment of the grain size of nc Cu from 75Â °C to 200Â °C was evident by 50 nm. Grain boundary enthalpy XRD results were representative of the grain growth of nc CU from 30nm to 80nm. Essentially, grain boundary enthalpy entails two procedures (Lu, Lu & Sui, 4132). The first is the dislocation of grain boundaries, which