Wednesday, December 5, 2007
Tuesday, December 4, 2007
Monday, December 3, 2007
Super-Kamiokande, or Super-K for short, is a neutrino observatory in Japan. The observatory was designed to search for proton decay, study solar and atmospheric neutrinos, and keep watch for supernovas in the Milky Way Galaxy.
Super-K is located 1,000 m underground in the Mozumi Mine (Kamioka Mining and Smelting Co.) in Hida city (formerly Kamioka town), Gifu, Japan. The detector consists of a cylindrical stainless steel tank 41.4 m tall and 39.3 m in diameter enclosing 50,000 tons of ultra-purified water. The tank volume is divided by a stainless steel superstructure into an inner detector (ID) region that is 33.8 m in diameter and 36.2 m in height and outer detector (OD) which consists of the remaining tank volume. Mounted on the superstructure are 11,146 photomultiplier tubes (PMT) 20 inches in diameter that face the ID and 1885 8-inch PMTs that face the OD. There is a barrier that optically separates the ID and OD.
A neutrino interaction with the electrons or nuclei of water can produce a charged particle that moves faster than the speed of light in water (although of course slower than the speed of light in vacuum). This creates a cone of light known as Cherenkov radiation, which is the optical equivalent to a sonic boom. The Cherenkov light is projected as a ring on the wall of the detector and recorded by the PMTs. Using the timing and charge information recorded by each PMT, the interaction vertex, ring direction and flavor of the incoming neutrino is determined. From the sharpness of the edge of the ring the type of particle can be inferred. The multiple scattering of electrons is large, so electromagnetic showers produce fuzzy rings. Highly relativistic muons, in contrast, travel almost straight through the detector and produce rings with sharp edges.
History
Construction of Kamioka Underground Observatory, the predecessor of the present Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo began in 1982 and was completed in April, 1983. The purpose of the observatory was to detect whether proton decay exists, one of the most fundamental questions of elementary particle physics.
The detector, named KamiokaNDE for Kamioka Nucleon Decay Experiment, was a tank 16.0m in height and 15.6m in width, containing 3,000 tons of pure water and about 1,000 photomultiplier tubes (PMTs) attached to its inner surface. The detector was upgraded, starting in 1985, to allow its to observe solar neutrinos. As a result, the detector (KamiokaNDE-II) had become sensitive enough to detect neutrinos from SN 1987A, a supernova which was observed in the Large Magellanic Cloud in February 1987, and to observe solar neutrinos in 1988. The ability of the Kamiokande experiment to observe the direction of electrons produced in solar neutrino interactions allowed experimenters to directly demonstrate for the first time that the sun was a source of neutrinos.
Despite successes in neutrino astronomy and neutrino astrophysics, Kamiokande did not achieve its primary goal, the detection of proton decay. Higher sensitivity was also necessary to obtain high statistical confidence in its results. This led to the construction of Super-Kamiokande, with fifteen times the water and ten times as many PMTs as Kamiokande. Super-Kamiokande started operation in 1996.
The Super-Kamiokande Collaboration announced the first evidence of neutrino oscillation in 1998. This was the first experimental observation consistent with the theory that the neutrino has non-zero mass, a possibility that theorists had speculated about for years.
On November 12, 2001, about 6,600 of the photomultiplier tubes in the Super-Kamiokande detector imploded, apparently in a chain reaction as the shock wave from the concussion of each imploding tube cracked its neighbours. The detector was partially restored by redistributing the photomultiplier tubes which did not implode, and by adding protective acrylic shells that are hoped would prevent another chain reaction from recurring (SuperKamiokande-II).
In July 2005, preparations began to restore the detector to its original form by reinstalling about 6,000 PMTs. It was completed in June 2006. (SuperKamiokande-III)
Sunday, December 2, 2007
Edward Morgan Forster, OM (January 1, 1879 – June 7, 1970), was an English novelist, short story writer, and essayist. He is known best for his ironic and well-plotted novels examining class difference and hypocrisy in early 20th-century British society. Forster's humanistic impulse toward understanding and sympathy may be aptly summed up in the epigraph to his 1910 novel Howards End: "Only connect."
Forster was homosexual, but this fact was not made public during his lifetime. His posthumously released novel Maurice, never intended for publication, tells of the coming of age of an explicitly gay male character.
Early years
Forster stopped writing novels at the age of 45, and produced little more fiction apart from short stories intended only for himself and a small circle of friends.
In the 1930s and 1940s Forster became a successful broadcaster on BBC Radio and a public figure associated with the British Humanist Association. He was awarded a Benson Medal in 1937.
Forster had a happy personal relationship, beginning in the early 1930s, with Bob Buckingham, a constable in the London Metropolitan Police. He developed a friendship with Buckingham's wife May and included the couple in his circle, which also included the writer and editor of The Listener J.R. Ackerley, the psychologist W.J.H. Sprott, and, for a time, the composer Benjamin Britten. Other writers with whom Forster associated included the poet Siegfried Sassoon and the Belfast-based novelist Forrest Reid.
After the death of his mother, Forster accepted an honorary fellowship at King's College, Cambridge and lived for the most part in the college, doing relatively little. In 1969 he was made a member of the Order of Merit. Forster died in Coventry the following year at the age of 91, at the home of the Buckinghams.
After A Passage to India
Forster had five novels published in his lifetime. Although Maurice appeared shortly after his death, it had been written nearly sixty years earlier. A seventh novel, Arctic Summer, was never finished.
His first novel, Where Angels Fear to Tread (1905), is the story of Lilia, a young English widow who falls in love with an Italian, and of the efforts of her bourgeois relatives to get her back from Monteriano (based on San Gimignano). The mission of Philip Herriton to retrieve her from Italy has features in common with that of Lambert Strether in Henry James's The Ambassadors, a work Forster discussed ironically and somewhat disapprovingly in his book Aspects of the Novel (1927). Where Angels Fear to Tread was adapted into a film by Charles Sturridge in 1991.
Next, Forster published The Longest Journey (1907), an inverted bildungsroman following the lame Rickie Elliott from Cambridge to a career as a struggling writer and then to a post as a schoolmaster, married to the unappetising Agnes Pembroke. In a series of scenes on the hills of Wiltshire which introduce Rickie's wild half-brother Stephen Wonham, Forster attempts a kind of sublime related to those of Thomas Hardy and D.H. Lawrence.
Forster's third novel, A Room with a View (1908) is his lightest and most optimistic. It was started before any of his others, as early as 1901, and exists in earlier forms referred to as "Lucy." The book is the story of young Lucy Honeychurch's trip to Italy with her cousin, and the choice she must make between the free-thinking George Emerson and the repressed aesthete Cecil Vyse. George's father Mr. Emerson quotes thinkers who influenced Forster, including Samuel Butler. A Room with a View was filmed by Merchant-Ivory in 1987.
Where Angels Fear to Tread and A Room with a View can be seen collectively as Forster's Italian novels. Both include references to the famous Baedeker guidebooks and concern narrow-minded middle-class English tourists abroad. The books share many themes with short stories collected in The Celestial Omnibus and The Eternal Moment.
Howards End (1910) is an ambitious "condition-of-England" novel concerned with different groups within the Edwardian middle classes represented by the Schlegels (bohemian intellectuals), the Wilcoxes (thoughtless plutocrats) and the Basts (struggling lower-middle-class aspirants).
It is frequently observed that characters in Forster's novels die suddenly. This is true of Where Angels Fear to Tread, Howards End and, most particularly, The Longest Journey.
Forster achieved his greatest success with A Passage to India (1924). The novel takes as its subject the relationship between East and West, seen through the lens of India in the later days of the British Raj. Forster connects personal relationships with the politics of colonialism through the story of the Englishwoman Adela Quested, the Indian Dr. Aziz, and the question of what did or did not happen between them in the Marabar Caves.
Maurice (1971) was published after the novelist's death. It is a homosexual love story which also returns to matters familiar from Forster's first three novels, such as the suburbs of London in the English home counties, the experience of attending Cambridge, and the wild landscape of Wiltshire. The novel was controversial, given that Forster's sexuality had not been previously known or widely acknowledged. Today's critics continue to argue over the authorship of Maurice and the extent to which Forster's sexuality, even his alleged personal activities, influenced his writing.
Novels
Forster's views as a secular humanist are at the heart of his work, which often depicts the pursuit of personal connections in spite of the restrictions of contemporary society. His humanist attitude is expressed in the non-fictional essay What I Believe.
Forster's two best-known works, A Passage to India and Howards End, explore the irreconcilability of class differences. Although considered by some to have less serious literary weight, A Room with a View also shows how questions of propriety and class can make connection difficult. The novel is his most widely read and accessible work, remaining popular long after its original publication. His posthumous novel Maurice explores the possibility of class reconciliation as one facet of a homosexual relationship.
Sexuality is another key theme in Forster's works, and it has been argued that a general shift from heterosexual love to homosexual love can be detected over the course of his writing career. The foreword to Maurice describes his struggle with his own homosexuality, while similar issues are explored in several volumes of homosexually charged short stories. Forster's explicitly homosexual writings, the novel Maurice and the short-story collection The Life to Come, were published shortly after his death.
Forster is noted for his use of symbolism as a technique in his novels, and he has been criticised (as by his friend Roger Fry) for his attachment to mysticism. One example of his symbolism is the Wych Elm tree in Howards End; the characters of Mrs Wilcox in that novel and Mrs Moore in A Passage to India have a mystical link with the past and a striking ability to connect with people from beyond their own circles.
Key themes
Notes
Notable works by Forster
Where Angels Fear to Tread 1905; The Longest Journey 1907; A Room with a View 1908; Howards End 1910; A Passage to India 1924; Maurice (supposedly written in 1913-1914, published posthumously in 1971, attributed to Forster); Arctic Summer 1980 (posthumous, unfinished)
Novels
The Celestial Omnibus (and other stories) 1911 · The Eternal Moment and other stories 1928 · Collected Short Stories (1947) (- a combination of the above two titles, containing: "The Story of A Panic" · "The Other Side Of The Hedge" · "The Celestial Omnibus" · "Other Kingdom" · "The Curate's Friend" · "The Road From Colonus" · "The Machine Stops" · "The Point Of It" · "Mr Andrews" · "Co-ordination" · "The Story Of The Siren" · "The Eternal Moment" · The Life to Come and other stories 1972 (posthumous) (containing the following stories written between approximately 1903 and 1960: "Ansell" · "Albergo Empedocle" · "The Purple Envelope" · "The Helping Hand" · "The Rock" · "The Life to Come" · "Dr Woolacott" · "Arthur Snatchfold" · "The Obelisk" · "What Does It Matter? A Morality" · "The Classical Annex" · "The Torque" · "The Other Boat" · "Three Courses and a Dessert: Being a New and Gastronomic Version of the Old Game of Consequences") · "My Wood"
Short stories
Abinger Pageant 1934 · England's Pleasant Land 1940
Plays and Pageants
A Diary for Timothy 1945 (directed by Humphrey Jennings, spoken by Michael Redgrave)
Film Scripts
Billy Budd 1951 (based on Melville's novel, for the opera by Britten)
Libretto
Abinger Harvest 1936 · Two Cheers for Democracy 1951
Collections of essays and broadcasts
Aspects of the Novel 1927 · The Feminine Note in Literature (posthumous) 2001
Biography
Alexandria: A History and Guide 1922 · Pharos and Pharillon (A Novelist's Sketchbook of Alexandria Through the Ages) 1923 · The Hill of Devi 1953
Travel writing
Selected Letters 1983-1985 · Commonplace Book 1985 · Locked Diary forthcoming 2007 (held at King's College, Cambridge)
Notable films based upon novels by Forster
Abrams, M.H. and Stephen Greenblatt, "E.M. Forster." The Norton Anthology of English Literature, Vol. 2C., 7th Edition. New York: W.W. Norton, 2000: 2131-2140.
Ackerley, J. R., E. M. Forster: A Portrait (Ian McKelvie, London, 1970)
Bakshi, Parminder Kaur, Distant Desire. Homoerotic Codes and the Subversion of the English Novel in E. M. Forster's Fiction (New York, 1996).
Beauman, Nicola, Morgan (London, 1993).
Brander, Lauwrence, E.M. Forster. A critical study (London, 1968).
Cavaliero, Glen, A Reading of E.M. Forster (London, 1979).
Colmer, John, E.M. Forster - The personal voice (London, 1975).
E.M. Forster, ed. by Norman Page, Macmillan Modern Novelists (Houndmills, 1987).
E.M. Forster: The critical heritage, ed. by Philip Gardner (London, 1973).
Forster: A collection of Critical Essays, ed. by Malcolm Bradbury (New Jersey, 1966).
Furbank, P.N., E.M. Forster: A Life (London, 1977-1978).
Haag, Michael, Alexandria: City of Memory (London and New Haven, 2004). This portrait of Alexandria during the first half of the twentieth century includes a biographical account of E.M. Forster, his life in the city, his relationship with Constantine Cavafy, and his influence on Lawrence Durrell.
King, Francis, E.M. Forster and his World, (London, 1978).
Martin, John Sayre, E.M. Forster. The endless journey (London, 1976).
Martin, Robert K. and George Piggford eds., Queer Forster (Chicago, 1997)
Mishra, Pankaj (ed.). "E.M. Forster." India in Mind: An Anthology. New York: Vintage Books, 2005: 61-70.
Scott, P.J.M., E.M. Forster: Our Permanent Contemporary, Critical Studies Series (London, 1984).
Summers, Claude J., E.M. Forster (New York, 1983).
Trilling, Lionel, E. M. Forster: A Study (Norfolk: New Directions, 1943).
Wilde, Alan, Art and Order. A Study of E.M. Forster (New York, 1967).
Saturday, December 1, 2007
Lake County is a county located in the state of Florida, United States. As of the 2000 Census, the population was 210,528. With a Census-estimated population of 290,435 in 2006[1], it is the 23rd fastest-growing county in the United States.[2] Its county seat is Tavares, Florida. Clermont, Florida, located in the southern portion of the county, is the largest city with a population of 22,097, based on 2006 census estimates.[3] Lake County is part of the Orlando-Kissimmee, Florida, Metropolitan Statistical Area.
History
According to the U.S. Census Bureau, the county has a total area of 2,995 km² (1,156 mi²). 2,469 km² (953 mi²) of it is land and 526 km² (203 mi²) of it (17.58%) is water.
Geography
Volusia County, Florida - northeast
Orange County, Florida - east
Seminole County, Florida - east
Osceola County, Florida - southeast
Polk County, Florida - south
Sumter County, Florida - west
Marion County, Florida - northwest Adjacent Counties
As of the census² of 2000, there were 210,528 people, 88,413 households, and 62,507 families residing in the county. The population density was 85/km² (221/mi²). There were 102,830 housing units at an average density of 42/km² (108/mi²). The racial makeup of the county was 87.46% White, 8.31% Black or African American, 0.33% Native American, 0.79% Asian, 0.04% Pacific Islander, 1.88% from other races, and 1.18% from two or more races. 5.61% of the population were Hispanic or Latino of any race.
There were 88,413 households out of which 23.40% had children under the age of 18 living with them, 58.90% were married couples living together, 8.50% had a female householder with no husband present, and 29.30% were non-families. 24.60% of all households were made up of individuals and 13.70% had someone living alone who was 65 years of age or older. The average household size was 2.34 and the average family size was 2.75.
In the county the population was spread out with 20.30% under the age of 18, 5.80% from 18 to 24, 23.80% from 25 to 44, 23.80% from 45 to 64, and 26.40% who were 65 years of age or older. The median age was 45 years. For every 100 females there were 93.70 males. For every 100 females age 18 and over, there were 91.10 males.
The median income for a household in the county was $36,903, and the median income for a family was $42,577. Males had a median income of $31,475 versus $23,545 for females. The per capita income for the county was $20,199. About 6.90% of families and 9.60% of the population were below the poverty line, including 15.80% of those under age 18 and 6.30% of those age 65 or over.
Demographics
Communities
Town of Astatula
City of Clermont
City of Eustis
City of Fruitland Park
City of Groveland
Town of Howey-in-the-Hills
Town of Lady Lake
City of Leesburg
City of Mascotte
City of Minneola
Town of Montverde
City of Mount Dora
City of Tavares
City of Umatilla Incorporated
Altoona
Astor
Citrus Ridge
Ferndale
Lake Kathryn
Lake Mack-Forest Hills
Lanier, Florida
Lisbon
Mount Plymouth
Okahumpka
Orange Bend
Paisley
Pine Lakes
Pittman
Silver Lake
Sorrento
The Villages
Yalaha Unincorporated
Government links/Constitutional offices
Lake County School Board
St. Johns River Water Management District
Southwest Florida Water Management District
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