Stellar Evolution Essay -- physics space stellar evolution

In astronomy, stellar evolution refers to the changes which stars undergo during their lifetime. Stars change in color, luminosity, size and temperature through their lifespan. Scientist can not study an individual stars lifetime though because they far exceed ours and therefore we must study stellar evolution by observing the life cycle of numerous stars, each at a different point in its life cycle, and then running computer models which simulate the structure of stars. Through history stars have been recorded, starting with the brightest, which have been named going back as far as 1000 b.c. by the chinese. Today we name stars in three categories, the first being the brightest are named for what constellation they are in. Variable stars are the ones that change in luminosity periodically and the fainter stars are logged in the Henry Draper Catalogue under numubers like HD 12938. Stars exist either alone or in groups of two or more in a system or cluster. Large clusters are grouped into galaxies and in our Galaxy, the Milky Way there are more than 100 billion stars. There are also 10's of millions of galaxies that are part of the known universe. Think about that and tell me there's no life out there. As technology permitted it was found that stars positions are not fixed and that stars move at various speeds measured in changes of direction in fractions of a second of arc per year. This second of arc is the angular size of a pinhead that is 183 m away (wow, now thats precise, you would think). Many of the fainter stars almost seem to not move at all though because they are so far away and thats why we use them as reference stars to measure others and scientists call this proper motion. A Parallex is another apparent m... ...rs of a fraction of a second. Its neutrinos send a shockwave out blasting most of the stars materials into space, but many of the elements get caught up in neutrinos and combine to create heavier elements. Without supernovae there would be no heavier elements than Iron-56. It is not understood well, but in some supernovae the gravity is so intense within the red supergiant that the electrons are forced into the atomic nuclei where they combine with protons to form neutrons. The electromagnetic forces keeping apart the seperate nuclei are gone and the entire core becomes a dense ball of neutrons or an atomic nucleus about the size of Manhatten called a Neutron Star. If the mass is great enough though, when the star turns into a red supergiant it will collapse under its on gravity into a radius smaller than the Schwarzchild Radius and turn into a Black Hole.

Monetary Policy of Bernanke

Ben Bernanke is current Chairmen of US Federal Reserve and his task is to ensure appropriate monetary policy in order to improve country’s economic and financial performance. Bernanke argues he has to work closely with all members of the Committee because it is the only way to develop monetary policy in such a way that it would fit country’s needs and demands. Therefore, the paper discusses issues of monetary policy offered by Bernanke as well as examines influence of globalization on overall monetary policy of the country. Actually, Bernanke is interested whether ongoing economic globalization and integration affects US monetary policy. Monetary policy operates in financial and economic environment being strongly affected by integration. Bernanke notes that monetary policy instead of stabilizing economic and financial situation in the country does little to drive powerful economic forces and to cause structural changes necessary for policy. Bernanke claims that if Federal Reserve wants to develop effective monetary policy, it should, firstly, be fully aware of all factors which are able to affect and determine the overall economic growth, inflation and employments rates in the United States. Chairman asserts that country’s economy should be open to other countries because openness plays crucial role in monetary policy affecting price stability and sustainable employment within country. Furthermore, economic openness also assists Federal Reserve in meeting congressional mandate. Bernanke cites analysts who argue that globalization puts obstacles to US monetary policy because it aims at reducing US interest rates of Federal Reserve and asset price. Also globalization diminishes the role of domestic factors affecting inflation process. Nevertheless, Bernanke doesn’t support such idea claiming that he is sure globalization should be implicated to increase effectiveness of monetary policy. Globalization and Monetary Institute was established to study impact of globalization no economy and policy of the country. Bernanke argues that monetary policy affects above all country’s financial conditions and asset prices and interest rates are under attack. Consequently, changes taken place in financial conditions would affect many households and firms, as well as would affect production, consumption and investment opportunities. Thus, Bernanke states that â€Å"the financial environment in which U.S. monetary policy is made has been irrevocably changed by the remarkable increases in the magnitudes of financial flows into and out of the United States†. (Bernanke 2007) Therefore, he argues that he Federal Reserve should pay more attention to financial stability by controlling federal funds and interest rates. Banks loans should be carefully considered as well. He recommends using open-market operations because due to policy of openness the Federal Reserve would be able to manage constant supply of funds, inter-bank markets. Such policy will keep federal funds close to the targeted rates and international integration of financial markets will not be affected or prevented. Further, Bernanke admits that the Federal Reserve should take proper control over the federal funds rates because they strongly affect short-term dollar nominal interest rates. Bernanke promotes cooperation of the Federal Reserve with modern central banks because it gives excellent opportunity to conduct monetary policy, to examine economic and financial data obtained from variety of markets, and to apply those data when considering economy and inflation. Bernanke says it is necessary to seek for alternative courses of policy to improve effectiveness of monetary policy and macroeconomic performance of the country. He recommends developing economic models to guide policymakers and forecasting techniques to ensure sustainable progress. Bernanke assumes that â€Å"monetary policymakers must therefore strike a difficult balance –conducting rigorous analysis informed by sound economic theory and empirical methods while keeping an open mind about the many factors, including myriad global influences, at play in a dynamic modern economy like that of the United States†. (Bernanke 2006) References Bernanke, Ben. (2007, March 2). Globalization and Monetary Policy. Retrieved April 19, 2007, from http://www.federalreserve.gov/boarddocs/speeches/2007/20070302/ Bernanke, Ben. (2006, February 15). Testimony of Chairmen Ben S. Bernanke. Retrieved April 19, 2007, from http://www.federalreserve.gov/boarddocs/hh/2006/february/testimony.htm Bernanke: The Yield Curve and Monetary Policy. (2006, March 20). Retrieved April 19, 2007, from http://economistsview.typepad.com/economistsview/2006/03/bernanke_the_yi.html                     

Plot in England in the Wuthering Heights by Emily Bronte

The plot surrounding Wuthering Heights is based in England. A man named Lockwood rents a manor house in an isolated part of England. Lockwood asks the house keeper Nelly Dean to tell him Heathcliff’s story. It important to note this part of the story because the tale that Nelly tells Lockwood will become the story line for Wuthering Heights. In the tale the Earnshaw children do not like Heathcliff because of his dark skin. When the father of the children die Earnshaw’s son Hindley inherits Wuthering Heights and seeks revenge on Heathcliff. The revenge comes as Hindley feels Mr. Earnshaw treated Heathcliff better than him. Catherine has a silent love developing for Heathcliff. Hindley’s wife dies during childbirth and Hindley then becomes exceptionally cruel and becomes an alcoholic. Catherine marries another man although she loves Heathcliff, and this leads to Heathcliff running away. Catherine’s intention was to marry Linton for social class. Heathcliff was gone for three years before returning. It is important to understand that Heathcliff returning to Wuthering Heights is for the purpose of seeking revenge on the people that have wronged him. Hindley receives money and squanders it away and once he dies Heathcliff takes over. Catherine dies also during childbirth, and Heathcliff ask to be haunted by her spirit on earth. Nelly Dean was her nursemaid. Heathcliff is cruel to his own son, Linton who he forces into pursuing Catherine; this is the only wayShow MoreRelatedWuthering Heights By Emily Bronte1555 Words   |  7 Pages2015 Wuthering Heights (1847) by Emily Brontà « Introduction The novel Wuthering Heights was written in 1847 by Emily Brontà «. The plot unravels with Lockwood visiting his landlord at Wuthering Heights; as Lockwood stays the night, he starts to discover items within the home and later a fatal vision appears, which causes him great curiosity. Lockwood returns back to his residence at Thrushcross Granges and listens to the history of his landlord, Heathcliff; told by an old servant at Wuthering HeightsRead MoreFemale Writers Have Made A Great Impact On Literature Throughout History886 Words   |  4 Pagespoor childhood, death, or heartache, they all had their own back stories. Two of the greatest female writers in history were Jane Austen and Emily Brontà «. Although they are both well-known female writers, their personal histories influenced there themes and modes of writing very differently. Born into a large family on December 16, 1775 in Hampshire, England, Jane Austen was the seventh child of eight. Her family was very close and affectionate toward each other. Although Jane never married, sheRead MoreEmily Bronte s Wuthering Heights Essay1220 Words   |  5 Pagesthe Brontà « sisters have both written novels centered on orphans’ pursuits of love that may have challenged civilized society. Emily Jane Brontà « and Charlotte Brontà « are among the six children born to Reverend Patrick Brontà « and Maria Branwell Brontà « (â€Å"Emily Brontà «Ã¢â‚¬ ). The loss of their mother and two eldest sisters resulted in different responses between Charlotte and Emily, while Emily became shyer, Charlotte developed a dominant attitude (â€Å"Charlotte Brontà «Ã¢â‚¬ ). Initially unsuccessful, Wuthering HeightsRead MoreEmily Brontes Wuthering Heights: Mental Illness and Feminism1663 Words   |  7 Pagesliterary work. Wuthering Heights is a great example of a book with its own hidden secrets that can surface with a little research. Emily Bronte’s Wuthering Heights depicts the oppression of women from mentally unstable individuals. Overview of Author Emily Bronte was born in Yorkshire, England on July 30, 1818 (â€Å"Emily Jane Bronte 1), to a family dedicated to literature (â€Å"Emily Jane Bronte† 2). 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T he ongoing comparison between the characters in Wuthering Heights and Brontà «Ã¢â‚¬â„¢s ownRead MoreHow Emily Bronte Introduces the Reader to the Themes of Enclosure and the Supernatural in Wuthering Heights1464 Words   |  6 PagesHow Emily Bronte Introduces the Reader to the Themes of Enclosure and the Supernatural in Wuthering Heights It took many attempts to get Wuthering Heights published and when it finally was it received a lot of negative reviews because the contemporary readers werent ready for Emilys style of realism. A Victorian critic July 1848 from Grahams Magazine reviewed Wuthering Heights as vulgar depravity and unnatural horrors and described the author as, a human being couldRead MoreWuthering Heights1634 Words   |  7 PagesEmily Brontà «, known for her novel Wuthering Height, was inspired for her writing through her siblings from a young age. Brontà « was born in Yorkshire, England in 1818. She had one younger sibling, Anne, and four older ones, Maria, Elizabeth, Charlotte, and Patrick Branwell. When Brontà « and her family moved to Haworth in West Yorkshire, Maria and Elizabeth both died of tuberculosis. Emily was raised in the rural countryside in solitude, which provided a background for her Gothic novel, Wuthering HeightsRead MoreWuthering Heights By Emily Bronte1936 Words   |  8 PagesWuthering Heights, a novel by Emily Bronte is one of the most admired and favorable written works in English literature. When the novel was published in the year 1847, it sold very poorly and only received a minimum amount of reviews. Although the novel does not contain any sexual relations or bloodshed, it is considered to be inappropriate due to its portrayal of an unconstrained love and cruelty. Wuthering Heights is formed on the Gothic tradition in the late 18th century, which consists of supernatural