Reflection and Refraction Research Paper Example | Topics and Well Written Essays - 1000 words

Reflection and Refraction - Research Paper Example Also, it has aided in the understanding on what makes the objects visible. The law of reflection The rule of reflection holds â€Å"for specular reflection the angle at which the wave is incident on the surface equals the angle at which it is reflected† (Anonymous, 2010). Reflection occurs when the wave travels through one medium to another. This is referred to as refractive index of the media. I order to determine the refractive index of different media, the following formula is used; n=c/v whereby, â€Å"n is the refractive index of the material, c represents speed of light in vacuum and v is the speed of light in vacuum† (Reeves, 2008). According to the law of reflection, the angle of incidence and the angle of reflection falls on the same reflecting surface and are equal and on opposite sides of the normal line (Kosso, 1998). Also, there is an assumption of a normal line which is an imaginary line perpendicular to the plane mirror surface and is the central line bet ween incident and reflected lines (appendix 1). When reflection occurs on an even surface, it forms a mirror image which appears overturned from right to left. However, when specular reflection occurs at a curved surface, these forms magnified or de-magnified images. Causes of reflection The nature of reflection depends on the surface in which the waves come into contact with (Jacobs & Schulman, 2008). ... Diffuse reflection of light waves enables us to see the various objects after coming into contact with various objects. In some situations, the reflected waves return in the direction they came from. This is referred to as retroreflection hence this makes the object to appear brighter (Reeves, 2008). Also, it is possible for reflected waves to undergo further reflections after coming into contact with another surface. This is referred to as multiple reflections (appendix 2). For example, this is observed if two mirrors are placed opposite each other and then an image is placed between them. Infinite images are formed on each mirror due to the occurrence of multiple reflections. Application of Reflection Reflections of waves of energy have numerous uses in daily lives. For example, the reflection if light waves are used in x-rays whereby, the light waves are converged and focused at a point to generate immense energy appropriate for the activity (Jacobs & Schulman, 2008). Different ma terials have different refractive indices hence when energy wave moves from dense to less dense refractive index materials; the reflected wave is diverged away from the normal. On the other hand, a movement of energy wave from a material with a less dense to a material with denser refractive index, the reflected wave is deflected to the normal line. The knowledge of reflection has also been applied in radar to manage the operations of aircrafts at the airport (Kosso, 1998). The same knowledge is also applied in radio and television broadcasting among other areas. The characteristics of waves can be viewed in the water bodies or as electromagnetic waves such as visible light. Conclusion When waves come into contact with

Case study Example | Topics and Well Written Essays - 750 words - 38

Case Study Example The budget the manager intends to submit for the financial year is $4,900,000 which exceeds the expected expense by $700,000. Submitting a budget higher than the expected cost to be incurred is a misuse of the power and authority vested in the management position. This is taking advantage of the position to mismanage public funds which is not ethical at all. Public officers are expected to conduct themselves in an ethical manner encouraging transparency in carrying out their duties. Submitting of a budget higher than the expected costs equals betrayal of the public trust in the role of the management in the city’s waste management. Furthermore, submitting a higher budget will strain the city’s finances especially with the reduction in tax collections. As a result, the city may not have enough funds to process waste in the near future. Inadequate fund in the future will mean that not all the waste is processed thus causing pollution to the environment. Therefore, submitting a higher budget will seem good in the short run to manage the department but with long term effects that may paralyze the operations of the department. Though the manager expects a cut on the budget by 10%, this does not justify the increase in the budget from $4,200,000 to $4,900,000. That is an increase of $700,000 which is way above the expected increase. Given that the total cost of the department will amount to $4200000, reducing it by 10% will amount to reduction of: The manager does not justify for the excess amount of $280,000 after the expected reduction of 10% by the city controller. Lack of accountability for this amount creates loopholes for corruption. By having submitted a higher budget, the department will rarely take back any excess amount since the manager does not want to disclose their actions. This results in misuse of public funds. Moreover, the expectation of increased cost of labor and the amount of waste is not enough reason also for the inflation of the budget

Nutritional guide to my plate Essay Example | Topics and Well Written Essays - 500 words

Nutritional guide to my plate - Essay Example The best energy giving foods that a person should consume are the grains. They have the energy contents that are essential for boosting the energy level of people. Moreover, eating the grains is very healthy and effective for males who do jobs that are tiresome and tedious. On the other hand, mothers should always put protein on the table in every meal for as proteins help in the body repair of an individual. Moreover, proteins are essential especially for young girls who are in puberty stage and loss of weight during their monthly periods. Proteins are very important in body repair and body building. Conversely, protein is needed by everybody in their lives and everyone must ensure that they consume some good amount of the proteins. However, proteins are categorized into different groups. The first category of protein is the animal protein. The next category of proteins is the plant proteins. The animal protein includes flesh. Flesh can either be red meat or white meat. White meat includes chicken and fish while red meat includes beef. It is prudent for one to consume a white meat than red meat. Red meat has very many health problems as compared to the white meat. The plant protein includes such foods as green grams and soya beans. On the other hand, fruits include things like banana, oranges and water melons. In conclusion, good health begins with a proper diet. Another important thing that one must consider is a number of the meals that they consume. The quantity should be proportionate as listed above.

Case study Example | Topics and Well Written Essays - 750 words - 38

Case Study Example The budget the manager intends to submit for the financial year is $4,900,000 which exceeds the expected expense by $700,000. Submitting a budget higher than the expected cost to be incurred is a misuse of the power and authority vested in the management position. This is taking advantage of the position to mismanage public funds which is not ethical at all. Public officers are expected to conduct themselves in an ethical manner encouraging transparency in carrying out their duties. Submitting of a budget higher than the expected costs equals betrayal of the public trust in the role of the management in the city’s waste management. Furthermore, submitting a higher budget will strain the city’s finances especially with the reduction in tax collections. As a result, the city may not have enough funds to process waste in the near future. Inadequate fund in the future will mean that not all the waste is processed thus causing pollution to the environment. Therefore, submitting a higher budget will seem good in the short run to manage the department but with long term effects that may paralyze the operations of the department. Though the manager expects a cut on the budget by 10%, this does not justify the increase in the budget from $4,200,000 to $4,900,000. That is an increase of $700,000 which is way above the expected increase. Given that the total cost of the department will amount to $4200000, reducing it by 10% will amount to reduction of: The manager does not justify for the excess amount of $280,000 after the expected reduction of 10% by the city controller. Lack of accountability for this amount creates loopholes for corruption. By having submitted a higher budget, the department will rarely take back any excess amount since the manager does not want to disclose their actions. This results in misuse of public funds. Moreover, the expectation of increased cost of labor and the amount of waste is not enough reason also for the inflation of the budget

Supply & demand & elasticity issues. Theories of the firm Essay

Supply & demand & elasticity issues. Theories of the firm. Macroeconomic issues - Essay Example The governmental actions include labor reforms which are discussed under a separate head. Supply & Demand and Elasticity Issues, Theories of the firm, Macroeconomic issues Table of contents PART ONE: Supply & Demand and Elasticity Issues 4 1. Supply and demand 4 2. Elasticity of demand 5 PART TWO: Theories of the Firm 7 1. Premises which underline the classical firm 7 Competitive markets 7 Perfect information 8 Full employment 8 Pricing of the products 9 2. Environmental changes 9 Role of the governments 9 Legal system 10 Globalization and liberalization 10 Corporate social responsibility 10 3. Theories of the firm 11 The Neoclassical Theory 11 The Transactions Cost Theory 12 The Principal–Agent Theory 12 Evolutionary theory 12 Behavioural theory 13 PART THREE: Macroeconomic Issues 15 i) GDP and Budget deficit 15 ii) Governmental actions and economy 16 Cuts in spending    16 Tax hikes 17 Borrowing money 18    Multiplier effect 18 Aggregate Demand 19 Aggregate Supply 20 Spe cific actions 20 iii) Supply side reform of the labour market 21 Conclusion 22 References 23 PART ONE: Supply & Demand and Elasticity Issues 1. Supply and Demand - Analysis of Statements â€Å"Both factors of demand depend on the market price. When the market price for a product is high, the demand will be low. When price is low, demand is high.† (Whelan & Msefer, 1996, p. 6) a) The price of a good falls, causing the demand for another good to rise. Hence, the two goods are substitutes. In fact in the case of substitutes, the demand for the substitute will fall leading to the price of the substitute to fall. Example: If the price of mutton falls, demand for mutton will increase, and not the demand for chicken which is a substitute for mutton. Conclusion: The statement is not correct. b)... This essay presents a modern comprehensive analysis of the relevance of the fundamental principles of supply and demand and elasticity concept in the today`s world. Also various microeconomic theories of the firm are discussed in the paper, such as neoclassical theory, transactions cost theory, principal agent theory, evolutionary theory and behavioral theories. The impacts of macro-economic factors on the firms are analyzed. The relevance of GDP and budget deficit to the operations of the firm in terms of its impact on their business is discussed with particular reference to Spain’s economy. The micro and macro economic theories have been evolving over the period time in tune with the changes that have taken place. What is relevant during a particular period of time loses its validity under the changed circumstances. However, the understanding of these concepts is very important for charting out the new course of actions and formulate future strategy Since 1945, many of the premises which underpin profit maximisation have been questioned, in particular whether firms operating in the real world actually behave like the â€Å"classical† firm. There are changes which have taken place in the structure and/or conduct of industry that provide evidence to reject the â€Å"classical firm hypothesis†. Maintaining flexibility in production and supplies is essential for responding quickly to the changes in the external environment which may be caused due to competition, governmental actions or state of the economy.

Defining Race and Ethnicity Essay Example for Free

Defining Race and Ethnicity Essay The use of the terms race and ethnicity is varied. The two terms are misused as if they are identical. The casual and common appearance of the terms side by side in the public discourse may discourage people from regarding them as distinct terms. Race is based on the premise of biological and physical differences. the concept of race included any essential zing of groups of people which held them to display inherent, heritable, persistent or predictive characteristics, and which thus had a biological or quasi-biological basis. Ethnicity is an embodiment of values, institutions, and patterns of behavior, a composite whole representing a peoples historical experience, aspirations, and worldview. Ethnic classification, either externally imposed or intrinsically engendered, often defines peoples membership to a group. Aside from social constructs, ethnicity is innately more central to human experience and identity than race. I do not believe that these concepts should be important to society. Racial and ethnic categories are neither fixed across societies nor within a society. Racial and ethnic categories are fluid and changing depending on the socio-political context of a society at any given time. Ethnic and racial differences do not inherently lead to conflict. Instead, these differences can take on a social meaning of hierarchy leading to conflict when divided groups fail to negotiate. In such cases, the imbalance of power, not the racial or ethnic differences per se, is the underlying cause of the conflict. In each of these cases, it is critical that the topic of race and ethnicity receives continual examination. The ideology and myth of racial and ethnic differences cannot be validated to support or legitimate superiority, privilege, or conflict as has often been the case in both historical and global contexts.

Moby Dick :: essays research papers fc

Moby Dick I. Biographical Insights A. The culture this great author was a part of was the time in American history where inspiring works of literature began to emerge. It was also a time when American writers had not completely separated its literary heritage from Europe, partly because there were successful literary genius' flourishing there. B. Herman Melville was born on August 1, 1819, he was the son of Allan and Maria Melville. During Herman's childhood he lived in the â€Å"good† neighborhoods of New York City. In 1832 Herman suffered tragedy when his father died after trying to cope with the stress of debts and misfortunes. After a short time in a business house in New York City, Herman determined he needed to go to sea. He spent years traveling on a variety of ships, including whaling ships. C1. Melville's perspective on life is that God created the universe with an infinite number of meanings and man is always trying to determine one specific meaning. D2. The â€Å"lessons† that Melville is likely to weave into his writing are 1. An exposition on whales and the whaling industry. 2. A commentary on the universe and human destiny. 3. Thoughts about God and Nature. III. Characters B. The protagonist in this book is Ishmael, a Christian, schoolteacher and part- time sailor. Ishmael's role in the hunt for â€Å"Moby Dick† is to interpret what is happening. He discusses his reasons for going to sea and interprets and looks for understanding a number of reasons for any specific action where other characters only understand one reason. C. It is hard to say what changes take place in Ishmael's personality, since he is the narrator he doesn't talk about himself, he only talks about what he sees. D1. Ishmael befriends Queequeg who is a cannibal. Even though Queequeg is very ugly Ishmael sees that Queequeg has an honest heart, great honor, and a lot of courage. This friendship had a positive influence on Ishmael's behavior because it taught him not to judge on outward appearances. E2. Another relationship that was very short was the relationship between Ishmael and Captain Ahab. For the first few days aboard the Pequod Ishmael always saw Ahab in the shadows. When Ishmael finally saw Ahab he had shivers run through his body. Ishmael felt Ahab's attitude of determination, dedication and hatred towards â€Å"Moby Dick† in Ahab's appearance. This relationship was a negative relationship because Ishmael now feared Ahab and did not want to become friends with such an evil person. F. The conflict that Ishmael experienced was that he saw how Ahab was such an