Imagine we have a closed loop of wire. To figure out how much current will be "induced" (i.e. produced by the magnetic field), we need to define the magnetic flux, a number describing how much of the magnetic field is actually going through the loop. Magnetic fields are vector fields, so they have both a strength and a direction. This leads to the following surface integral:
where
That is, we could imagine filling in the wire loop with a thin surface, like a soap film. This formula tells us to look at every point on that surface, measure how much the magnetic field is pointing straight through the loop at that point, and add up all those measurements to get a single number. That number is the magnetic flux. When the flux changes, it produces electromotive force. The flux changes when B changes or when the wire loop is moved or bent, or when both happen. The electromotive force can then be calculated with the following equation:
Paul Langevin
Paul Langevin (23 January 1872 – 19 December 1946) was a French physicist who was active at the beginning of the 20th century.
He invented sonar and worked with Albert Einstein.
Gene Siskel
Eugene Kal "Gene" Siskel (January 26, 1946 February 20, 1999) was an American movie critic and journalist for the Chicago Tribune. Along with his friend Roger Ebert, with Ebert they hosted a popular review show "Siskel & Ebert At the Movies" from 1975 until his death in 1999.
Siskel was born in Chicago, Illinois and was educated at Yale University. Siskel was married to Marlene Iglitzen in 1980 until his death, they had 3 children; Kate, Calie, and Will. Siskel died from complications from surgery to remove a brain tumor in Evanston, Illinois, aged 53. He is buried at Westlawn Cemetery in Norridge, Illinois.
Donald Pleasence
Donald Henry Pleasence OBE (October 5, 1919 – February 2, 1995) was an English actor. Pleasence was born in Worksop, Nottinghamshire, England. He was raised in Lincolnshire, England. During his career, Pleasence was nominated for four Tony Awards. He won a BAFTA TV Award for Best Actor in 1959. In his whole career, Pleasence appeared in over 200 movies.
He made his first movie "The Dybbuk" in 1952. It was a television movie. He acted in several movies, such as "You Only Live Twice", where he played James Bond villain Ernst Stavro Blofeld, and "The Great Escape". Pleasence is known for his role as Dr. Samuel Loomis in John Carpenter's "Halloween". Since then, he appeared in five out of the six movies of the "Halloween movie series". Pleasence did not appear in "" because it was a different story from the last two movies.
Pleasence died at the age of 75 in Saint-Paul-de-Vence, France, from complications of heart failure. It was following a heart valve replacement surgery.
Pleasence was born Donald Henry Pleasence in Worksop, Nottinghamshire, England on October 5, 1919. His parents were Alice and Thomas Pleasence. Pleasence was raised as a Methodist. He was raised in Lincolnshire, England. Pleasence studied at the Ecclesfield School in Yorkshire, England.
During World War II, Pleasence was sent to serve in the Royal Air Force. He served with 166 Squadron, RAF Bomber Command. His war plane was shot down in August 1944, during a raid on Agenville. He was placed in the German prisoner-of-war camp. Pleasence was released before the war's end in 1945.
In 1939, Pleasence started working on stage as an assistant stage manager. His first acting job was as Hareton in the stage version of "Wuthering Heights". He worked in theatres in Birmingham and Bristol. Later, Pleasence moved to London. There he appeared as Valentine in "Twelfth Night" in 1942.
Pleasence's first television work was in "I Want to Be A Doctor" in 1946. In 1954, he played Syme in a BBC adaptation of George Orwell's novel "Nineteen Eighty-Four". The adaptation was by Nigel Kneale. Pleasence played Prince John in several episodes of the ITV series "The Adventures of Robin Hood".
Pleasence made his big-screen debut with the 1954 movie "The Beachcomber". Some early roles include Parsons in "1984" (his second Orwell movie). He also appeared in minor roles such as in "Barnacle Bill" and in "The Wind Cannot Read". In Tony Richardson's movie, "Look Back in Anger", he plays a market inspector.
During the early 1960s, Pleasence recorded several children's-story records. They were released in the United States as "Tale Spinners For Children" by United Artists. The stories included "Don Quixote" and the "Brave Little Tailor". Pleasence did the voice-over for the British Public Information Film, "The Spirit of Dark and Lonely Water" in 1973. He was the author of the 1977 children's book "Scouse the Mouse".
In his later years, he appeared as Lucas Deranian in Walt Disney's Escape to Witch Mountain, Dr. Loomis in "Halloween", Dr. Kobras in The Pumaman and the President in "Escape from New York". He reprised his Dr. Loomis role in "Halloween II", "", "" and "". Pleasence's acting career ended when he died in 1995.
Pleasence was nominated four times for the Tony Award. He was nominated for Best Performance By a Leading Actor in a Broadway Play. He was nominated in 1962 for Harold Pinter's "The Caretaker", in 1965 for Jean Anouilh's "Poor Bitos", in 1969 for Robert Shaw's "The Man in the Glass Booth", and in 1972 for Simon Gray's "Wise Child".
Pleasence was married four times. He married Miriam Raymond in 1941. They divorced in 1958. He married Josephine Crombie in 1959. They divorced in 1970. He married Meira Shore in 1970. They divorced in 1988. He was last married to Linda J. Kentwood in 1988. Their marriage lasted until Pleasance died in 1995.
Pleasence had five daughters. He and Raymond had two daughters, Angela and Jean Pleasence. He and Crombie had two daughters, Polly Jo and Lucy. He and Shore had one daughter, Miranda.
Pleasence died from heart failure after heart surgery in Saint-Paul-de-Vence, France on February 2, 1995, aged 75. His remains were later cremated. His last full movie, "" was dedicated in his memory.
List of cities in Indiana
The following is the list of cities in Indiana. Cities marked with an asterisk (*) have a population of at least 35,000 and up to 600,000.
Big Bend (Florida)
The Big Bend of Florida, U.S.A., is an informal region of the state. There are not official boundaries.
Dallas, Georgia
Dallas is the county seat of Paulding County, Georgia, United States. As of the 2010 census, the city had a population of 11,544. It was named for George M. Dallas, Vice President of the United States of America under James K. Polk.
Santa Venera
Santa Venera is a town in Malta. In 2013 the population was about 6,941. This town is in the Outer Harbour Region of Malta. The oldest buildings in Santa Venera are Wignacourt Aqueduct and Casa Leoni. Both of these buildings were built by the Knights of St. John.
The football team of St. Venera is the St. Venera Lightnings. They use the colours of the town: yellow and blue.
Paul Rogers
Paul Rogers (22 March 1917 – 6 October 2013) was an English movie and television actor who has appeared in movies such as; "The Beachcomber", "Our Man in Havana", "Edwin", "The Looking Glass War", and "Billy Budd".
Rogers was born on March 22, 1917 in Plympton, Devon, England.
Rogers was educated at The Michael Chekhov Theatre Studio. Rogers was currently married to Rosalind Boxall. They two children. He lived in London, England. He has won a Tony Award.
Rogers died on October 6, 2013 in his London, England home from natural causes, aged 96.
San Lorenzo
San Lorenzo is the Italian and Spanish name for Saint Lawrence, the 3rd century Christian martyr. It may also be:
San Lorenzo, Santa Fe
San Lorenzo is a city in the south of the province of Santa Fe, Argentina. It is 23 km north of Rosario, on the western shore of the Paraná River. It is the head town of the San Lorenzo Department. As of 2001 there were about 43,500 people.