Free Essays on Big Bang Theory

It is always a mystery about how the universe began, whether if and when it will end. Astronomers construct hypotheses called cosmological models that try to find the answer. There are two types of models: Big Bang and Steady State. However, through many observational evidences, the Big Bang theory can best explain the creation of the universe. The Big Bang model postulates that about 15 to 20 billion years ago, the universe violently exploded into being, in an event called the Big Bang. Before the Big Bang, all of the matter and radiation of our present universe were packed together in the primeval fireballan extremely hot dense state from which the universe rapidly expanded.1 The Big Bang was the start of time and space. The matter and radiation of that early stage rapidly expanded and cooled. Several million years later, it condensed into galaxies. The universe has continued to expand, and the galaxies have continued moving away from each other ever since. Today the universe is st ill expanding, as astronomers have observed. The Steady State model says that the universe does not evolve or change in time. There was no beginning in the past, nor will there be change in the future. This model assumes the perfect cosmological principle. This principle says that the universe is the same everywhere on the large scale, at all times. 2 It maintains the same average density of matter forever. There are observational evidences found that can prove the Big Bang model is more reasonable than the Steady State model. First, the redshifts of distant galaxies. Redshift is a Doppler effect which states that if a galaxy is moving away, the spectral line of that galaxy observed will have a shift to the red end. The faster the galaxy moves, the more shift it has. If the galaxy is moving closer, the spectral line will show a blue shift. If the galaxy is not moving, there is no shift at all. However, as astronomers observed, the more distance a galaxy is... Free Essays on Big Bang Theory Free Essays on Big Bang Theory It is always a mystery about how the universe began, whether if and when it will end. Astronomers construct hypotheses called cosmological models that try to find the answer. There are two types of models: Big Bang and Steady State. However, through many observational evidences, the Big Bang theory can best explain the creation of the universe. The Big Bang model postulates that about 15 to 20 billion years ago, the universe violently exploded into being, in an event called the Big Bang. Before the Big Bang, all of the matter and radiation of our present universe were packed together in the primeval fireballan extremely hot dense state from which the universe rapidly expanded.1 The Big Bang was the start of time and space. The matter and radiation of that early stage rapidly expanded and cooled. Several million years later, it condensed into galaxies. The universe has continued to expand, and the galaxies have continued moving away from each other ever since. Today the universe is st ill expanding, as astronomers have observed. The Steady State model says that the universe does not evolve or change in time. There was no beginning in the past, nor will there be change in the future. This model assumes the perfect cosmological principle. This principle says that the universe is the same everywhere on the large scale, at all times. 2 It maintains the same average density of matter forever. There are observational evidences found that can prove the Big Bang model is more reasonable than the Steady State model. First, the redshifts of distant galaxies. Redshift is a Doppler effect which states that if a galaxy is moving away, the spectral line of that galaxy observed will have a shift to the red end. The faster the galaxy moves, the more shift it has. If the galaxy is moving closer, the spectral line will show a blue shift. If the galaxy is not moving, there is no shift at all. However, as astronomers observed, the more distance a galaxy is...

Biography of Adam Smith, Founding Father of Economics

Biography of Adam Smith, Founding Father of Economics Adam Smith (June 16, 1723–July 17, 1790) was a Scottish philosopher who today is considered to be the father of economics. His seminal work, The Wealth of Nations, published in 1776, influenced generations of politicians, leaders, and thinkers, including Alexander Hamilton, who looked to Smiths theories when, as secretary of the treasury, he fashioned the economic system of the United States. Fast Facts: Adam Smith Known For: Father of economicsBorn: June 16, 1723 in Fife, ScotlandParents: Adam Smith, Margaret DouglasDied: July 17, 1790 in Edinburgh, ScotlandEducation: University of Glasgow, Balliol College, OxfordPublished Works: The Theory of Moral Sentiments (1759), The Wealth of Nations (1776)Notable Quote: Every individual†¦ neither intends to promote the public interest, nor knows how much he is promoting it†¦he intends only his own security; and by directing that industry in such a manner as its produce may be of the greatest value, he intends only his own gain, and he is in this, as in many other cases, led by an invisible hand to promote an end which was no part of his intention. Early Years and Education Smith was born in 1723 in Kirkcaldy, Scotland, where his widowed mother raised him. At age 14, as was the usual practice, he entered the University of Glasgow on a scholarship. He later attended Balliol College at Oxford, graduating with extensive knowledge of European literature. He returned home and delivered a series of well-received lectures at Glasgow University, which appointed him first as the chair of logic in 1751 and then chair of moral philosophy in 1752. Founding Father of Economics Smith is often described as the founding father of economics. A great deal of what is now considered standard belief about the theory about markets was developed by Smith. He explained his theories in Theory of Moral Sentiments, published in 1759. In 1776, he published his masterpiece, An Inquiry into the Nature and Causes of the Wealth of Nations, which today is generally called The Wealth of Nations. In Theory of Moral Sentiments, Smith developed the foundation for a general system of morals. It is a very important text in the history of moral and political thought. It provides the ethical, philosophical, psychological, and methodological underpinnings to Smiths later works. ​ In this work, Smith stated that man was self-interested and self-commanded. Individual freedom, according to Smith, is rooted in self-reliance, the ability of an individual to pursue his self-interest while commanding himself based on the principles of natural law. The Wealth of Nations The Wealth of Nations is actually a five-book series and considered to be the first modern work in the field of economics. Using very detailed examples, Smith attempted to reveal the nature and cause of a nations prosperity. Through his examination, he developed a critique of the economic system. Most commonly known are Smiths critique of mercantilism and his concept of the invisible  hand, which guides economic activity. In explaining this theory, Smith stated that wealthy individuals are: ...led by an  invisible hand  to make nearly the same distribution of the necessaries of life, which would have been made, had the earth been divided into equal portions among all its inhabitants, and thus without intending it, without knowing it, advance the interest of the society. What led Smith to this remarkable conclusion was his recognition that wealthy people dont live in a vacuum: they need to pay (and thus feed) the individuals who grow their food, manufacture their household items, and toil as their servants. Simply put, they cant keep all the money for themselves. Smiths arguments are still used and cited today in debates. Not everyone agrees with Smiths ideas. Many see Smith as an advocate of ruthless individualism. Regardless of how Smiths ideas are viewed, The Wealth of Nations is considered to be, and is arguably, the most important book on the subject ever published. Without a doubt, it is the most seminal text in the field of free-market capitalism. Later Years and Death After living in both France and London for a time, Smith returned to Scotland in 1778 when he was appointed the commissioner of customs for Edinburgh. Smith died on July 17, 1790, in Edinburgh and was buried in the Canongate churchyard. Legacy Smiths work had a profound effect on the American  founding fathers  and the nations economic system. Instead of founding the United States on the idea of mercantilism and creating a culture of  high tariffs  to protect local interests, many key leaders, including  James Madison  and Hamilton, espoused the ideas of free trade and limited government intervention. In fact, Hamilton, in his Report on Manufacturers espoused a number of theories first stated by Smith. These theories stressed the need to cultivate the extensive land that was available in America to create a wealth of capital through labor, distrust of inherited titles and nobility, and the establishment of a military to protect the land against foreign intrusions. Sources â€Å"Adam Smith.†Ã‚  Econlib.Brett, Sarah, and Oxford University Press. â€Å"Adam Smith (1723-90).†Ã‚  Oxford University Press | Online Resource Centre.Founders Online. Alexander Hamiltons Final Version of the Report on the Subject of the Manufactures.  National Archives and Records Administration, National Archives and Records Administration.

The Talk Show in Relation to the Free and Democratic Debate Dissertation

The Talk Show in Relation to the Free and Democratic Debate - Dissertation Example Mirzoeff (2002) posits that the evolution of the talk show is a prime example of re-narrativizing everyday experiences through a participatory format spearheaded by Phil Donahue, paving the way for Oprah, Sally Jesse Raphael, and Jerry Springer. Additionally, Mirzoeff highlights the point that the key factor to the popularity in the talk show programs is the use of guests that â€Å"tend to be both ordinary in their resemblance to other middle-class Americans and exceptional in that their function is to narrate some form of transgressive or unconventional behavior† (p..453). However, on the other side of the spectrum, the popularity of the talk show format has fuelled polarised academic debate as to whether television talk shows are a valid new public sphere on a par with pre-existing political institutions as a form of public debate, particularly for marginalized social groups (Mirzoeff, 2002, p.453). Alternatively, critics of the televisual format argue that the confessional aspect of the talk show undermines the validity of the talk show as a genuine public sphere for debate and propose that the talk show is essentially a manipulated format of television, creating the illusion of participation with the overall purpose to entertain and thereby controlled by the programming objectives. For example, in the US the term â€Å"talk show† includes chat shows that feature groups of guests as well as the confessional Jerry Springer format. With regard to the latter participation format, this will involve guest participation and the host will typically undertake the role of mediator, which is an important distinction to make in considering how the talk show operates as a media experience (Tolson, 2001, p.7). To this end, Tolson asserts that â€Å"if the talk show is the most controversial TV genre then much academic commentary seems impelled to line up either for or against the terms of the controversy (2001, p.7).

Video game Essay Example | Topics and Well Written Essays - 1000 words

Video game - Essay Example The effect on the young adult will largely depend on the intensity of addiction to video games and the levels of violence contained in such games. The paper notes that video games are good despite the few problems. Young adults may become socially isolated once they start dwelling on games every time they are not occupied with chores or studies. Teenagers may become so used to video games that they may end up forgetting some of the important schooling aspects such as homework, reading and sporting activities that make them physically and mentally fit. Time spent with family and friends would be minimal while at the same time it is not possible to them to replace their offline time in engaging with people. Rather, such time is replaced with getting used to online games on mobile devices to a point that being a loner if, not regarded as a norm by gamers. Games shape the minds of those playing; be it violence and aggressive thoughts associated with the game or fast moving cars and the adrenaline that comes with speed (Anderson, Gentile & Buckley, 2007). Violent games can be said to be directly related to the increased aggressive thoughts of gamers and a violent nature in real life. Games are interactive in nature, and some have the aim of rewarding violence which is dangerous if translated directly in real life. The gamer is in control of the violence using gamepads that make them feel powerful whereas in real life this is not the case. The gamer also has the chance to experience the violence first hand such as killings, shooting, stabbing and shooting which are considered as a vice but an achievement in the game. Other video games have the tendency of teaching teenage gamers the wrong values such as violent behavior, aggression and vengeance that are rewarded in the game (Anderson, Gentile & Buckley, 2007). Situations that are used in real life such as

Compare and contrast Essay Example for Free

Compare and contrast Essay People are always looking forward to their vacation period. There are many options where to choose. I think that the three most common places people choose for taking a vacation are the beach, mountain, and an amusement park. All three places offer a variety of fun activities. The beach offers activities that the mountain or amusement park cannot offer and vice versa. All three places are totally different. The purpose of this essay is to contrast the climate, types of activities and locations of beaches, mountains, and amusement parks. First of all, the three aspects I’m going to discuss about the mountains are climate, types of activities and location. Climate is always important in order to enjoy vacations. If a person dislikes cold weather, he or she might have a hard time in the mountains. The cold climate in the mountains is the first barrier to enjoying them. As I said before, many people don’t enjoy cold temperatures. The climate and the temperature of these zones are what determine the types of activities they offer. Snowboarding, mountain climbing, mountain biking, hiking, and skiing are some of the activities people can enjoy when going to the mountains. There are many regions that have mountains where people can go and have a great vacation. Canada is a country located in North America and full of mountain vacation sites. Inside Canada there are many interesting places where people can go and have fun. Second of all, the three aspects I’m going to discuss about the beach are climate, types of activities and location. Warm climate is one of the most important features that the beach has. Sun and fun are two words that describe the beach. The temperature in those places is always hot. The sea and the warm climate determine the activities that are available at the beach. People can swim, play volleyball, play soccer, and ride water bikes. In most of the coastal sites, there are discos and restaurants where people can dance or party throughout the night. Mexico offers many amazing coastal sites to visit. Acapulco and Cancun are two of the most beautiful and famous beaches in the world. Last but not the least, the three aspects I’m going to discuss about amusement parks are climate, types of activities and location. The climate for an amusement park is almost always hot. If a person doesn’t want to go home with sun burns then the amusement park would not be the place for them. Finally, it doesn’t matter what place a person decides to choose. The fun is 100% guaranteed. People often choose one of these three options to spend their vacations. Depending on what the person likes is what he or she will choose. I like amusement parks better than the mountains or the beach, but sometimes it is better to take a risk and try different places to enjoy.

Pudd?nhead Wilson Essay -- essays research papers

A Character Analysis of Tom Driscoll   Ã‚  Ã‚  Ã‚  Ã‚  In Pudd’nhead Wilson by Mark Twain, the story of two boys, who were switched at early childhood, is told. One of these boys, Tom Driscoll, displays many characteristics in the novel. Tom shows how he is rude and a liar, but he also exhibits his ability to change his ways.   Ã‚  Ã‚  Ã‚  Ã‚  From his childhood to his later years, it was evident that Tom Driscoll was a rude character. For example, during his childhood, Tom and Chambers (the boy with whom Tom was switched with and who was also Tom’s slave) always went an â€Å"played† together. On such instance was when they went swimming with Tom’s friends and were diving off of canoes. Chambers was an excellent diver, however, Tom could not dive for it gave him splitting headaches. And for this reason (Chambers could do something that Tom could not do), Tom pushed the canoe under Chambers as he was in a mid-air dive. The result was that Chambers was unconscious and Tom’s spirit was gratified. Later on, when they were about fifteen, the boys were swimming in the river as usual, Tom fell ill to a cramp in the water and Chambers saved his life. Instead of being grateful to Chambers and thanking him, Tom said that â€Å"anybody but a blockheaded nigger would have known he was funning and left him [Tom] alone† (23). Furthermore, after Tom had gone to college (Yale) and returned back to Dawson’s Landing, he still carried this trait. This was evident when he was h...

Business Communication in Today’s World

INTRODUCTION Definition Communication is defined as the process of transferring information and meaning between senders and receivers, using one or more written, oral, visual or electronic channels. Simply put, communication is the exchange of information between people. It is important to get feedback from your audience and vice versa for the process of communication to take place effectively. The feedback can be either positive or negative. Business communication is any communication used in an organisation with an intention to promote a product, improve service or with the intention to make a sale. This type of communication also occurs within the organisation between the management and employees. It has purpose and a lot of attention is given to detail. Business communication has undergone a lot of transformation as a result of the growth of information technology that has changed the whole concept of communication. In the past, businesses had a model of communication that left very little room for interaction and conversation with the receiver of the message. Currently the model that works and is now used by most organisations is one that gives room to both conversation and interaction with the receivers. BODY Communication is very vital in any organization. Like blood in our bodies, it is the channel that gives life to the organisation and without it, organisations would not be functional. There are two types of business communication in an organization 1. Internal Communication 2. External Communication Internal communication This defines communication that occurs within an organisation. It occurs between management and departments and between the employees of the organization. This type of communication may be formal or informal. Internal communication is vital because it helps in increasing job satisfaction, productivity and profits. It is also a platform for employees and management to air and address grievances. There are three types of communication under internal business communication a) Upward Communication b) Downward Communication c) Horizontal communication a) Upward communication Upward communication is the flow of information from subordinates to superiors or from employees to management. By definition, communication is a two-way affair. Yet for effective two-way organizational communication to occur, it must begin from the bottom. Upward Communication is a means for staff to: * Exchange vital information * Offer ideas Express enthusiasm * Achieve job satisfaction * Provide feedback Diagram showing upward communication in a bank b) Downward Communication This is the flow of information from the person or people who are at the top of the organisation to their subordinates. Downward communication generally provides information for direction and guidance e. g. Instructions on how to do a task. This type o f communication is needed in an organization to: * Transmit important information * Give instructions * Announce decisions * Seek cooperation * Provide motivation * Increase efficiency * Obtain feedback c) Horizontal communication Horizontal communication normally involves coordinating information, and allows people with the same or similar rank in an organization to co-operate or collaborate. Communication among employees at the same level is crucial for the accomplishment of work. Horizontal Communication is essential for: * Solving problems * Accomplishing tasks * Improving teamwork * Building goodwill * Boosting efficiency External Communication This type of communication occurs between the organisation and the public. This includes suppliers, clients or customers, shareholders or investors and with other organisations. Social networks have transformed external communication. The popularity of Facebook, Twitter, LinkedIn and other social networks have made them effective tools for communication that organisations now use. External communication leads to: * Increased sales volume * Public credibility * Operational efficiency * Achievement of organisational goals * Customer satisfaction METHODS OF COMMUNICATION There are different communication methods that are used in business communication. We have verbal, written and visual methods that come in different forms. These forms of communication have undergone transformation with the introduction of information technology. For example verbal forms of communication like telephone calls have been improved to incorporate video conferencing. It is important to choose the right method and form of communication if you are to effectively pass information to your audience. The choice is determined by several factors: * Urgency – How important is the information to the recipient and what would be the effect of delay? * Security and privacy – Are the contents of the message classified? Nature and complexity – does the message contain detailed/ technically complex information that could be misunderstood? * Number of recipients – is the message intended for one person, a selected group or everyone? * Record – Will evidence/proof of communication be needed? * Distance – Is the message for internal use only or does it need to be transmitted further? * Impression/ appea rance – is the message required to create a favorable impression by its style/ quality/ appearance? If so, are the recipient’s taste known? * Feedback – will an instant response be needed from the message? Cost –How much will it cost you to pass this information and is it worth it? Forms of communication include: * Memos * Email * Letters * Newspapers/magazines * Television * Telephone * Meetings Information technology has transformed business technology and today there are several tools that are available for communication both internal and external communication. Some of these tools include: * Wireless network * Electronic presentations * Virtual meeting spaces * Wikis * Voice technology * Video conferencing CONCLUSION Business communication should be effective if the organization is to achieve its goals and desired results. The purpose of business communication is to pass information to the receiver and receive a response. Effective communication is communication that ensures that this happens in an efficient way. For information to be effective, it has to be able to: * Provide information that is practical – it should be able to give the receiver information that they can apply in their daily life. * It should give facts and avoid vague impressions – Language used should be strong and give clear and accurate information. In the case of an argument it should give evidence to support the conclusion reached. The presentation should be concise and efficient this can be achieved by summarizing and highlighting the main points Business communication is important because it helps in: * Decision making – business communication makes the process of decision making faster because reliable information has been received. * Solving problems – Effective communication ensures that problems are solved faster because the problems have already been understood. * Foreseeing potential problems that the business could experience * Developing stronger relationships business relationships * Developing exceptional marketing messages It is important to note that business communication is different from social communication with friends and family. Business communication is complicated and requires skill and attention. As result there are challenges that rise when trying to ensure that an organization has effective business communication. Some of these challenges include: Globalization in business and the diversity of the workforce – Businesses can presently be able to connect with the world and sell products across borders. Although, the opening up of the market is an advantage to the business, it presents new challenges in communication. The organization should find methods to be able to effectively communicate with the new market and diverse workforce that these new opportunities present. The escalation of value given to business communication – We are living in the Information age and competition in the marketplace is determined by how well business information is relayed by the organization. It is important to acquire information on competition, customer needs and the rules and regulations. Growth of technology – Business communication today is dependent on technology and technology is very dynamic. For an organization to be relevant it has to have the ability to transform at the same pace that technology is advancing. It is therefore important to use it productively. We should also remember that technology is just a tool for communication, not a replacement to think or communicate for an organization. Increasing reliance on teamwork – teams are vital in an organizational structure and for teams to produce results there is a need for them to have efficient communication. This sometimes presents challenges but developing great communication lines ensures that teamwork is successful. Business communication is growing; innovations are being made daily to make communication more efficient. Conventional ways are being transformed to incorporate technology or being discarded completely for lack of relevance. All this is done in an effort to improve business and increase productivity. REFERENCES Bove`e, L. , and Thill, V. (2010). Business Communication Today. Upper Saddle, NJ. Pearson Education Inc. Publishing.