The Relationship Between Electricity and Magnetism

Electricity and magnetism are separate yet interconnected phenomena associated with the electromagnetic force. Together, they form the basis for electromagnetism, a key physics discipline. Key Takeaways: Electricity and Magnetism Electricity and magnetism are two related phenomena  produced by the electromagnetic force. Together, they form electromagnetism.A moving electric charge generates a magnetic field.A magnetic field induces electric charge movement, producing an electric current.In an electromagnetic wave, the electric field and magnetic field are perpendicular  to one another. Except for behavior due to the force of gravity, nearly every occurrence  in daily life stems from the electromagnetic force. It is responsible for the interactions between atoms and the flow between matter and energy. The other fundamental forces are the weak and strong nuclear force, which govern radioactive decay and the formation of atomic nuclei. Since electricity and magnetism are incredibly important, its a good idea to begin with a basic understanding of what they are and how they work. Basic Principles of Electricity Electricity is the phenomenon associated with either stationary or moving electric charges. The source of the electric charge could be an elementary particle, an electron (which has a negative charge), a proton (which has a positive charge), an ion, or any larger body that has an imbalance of positive and negative charge. Positive and negative charges attracts each other (e.g., protons are attracted to electrons), while like charges repel each other (e.g., protons repel other protons and electrons repel other electrons).   Familiar examples of electricity include lightning, electrical current from an outlet or battery, and static electricity. Common SI units of electricity include the ampere (A) for current, coulomb (C) for electric charge, volt (V) for potential difference, ohm (ÃŽ ©) for resistance, and watt (W) for power. A stationary point charge has an electric field, but if the charge is set in motion, it also generates a magnetic field. Basic Principles of Magnetism Magnetism is defined as the physical phenomenon  produced by moving electric charge. Also, a magnetic field can induce charged particles to move, producing an electric current. An electromagnetic wave (such as light) has both an electric and magnetic component. The two components of the wave travel in the same direction, but oriented at a right angle (90 degrees) to one another. Like electricity, magnetism produces attraction and repulsion between objects. While electricity is based on positive and negative charges, there are no known magnetic monopoles. Any magnetic particle or object has a north and south pole, with the directions based on the orientation of the Earths magnetic field. Like poles of a magnet repel each other (e.g., north repels north), while opposite poles attract one another (north and south attract). Familiar examples of magnetism include a compass needles reaction to Earths magnetic field, attraction and repulsion of bar magnets, and the field surrounding electromagnets. Yet, every moving electric charge has a magnetic field, so the orbiting electrons of atoms produce a magnetic field; there is a magnetic field associated with power lines; and hard discs and speakers rely on magnetic fields to function. Key SI units of magnetism include the tesla (T) for magnetic flux density, weber (Wb) for magnetic flux, ampere per meter (A/m) for magnetic field strength, and henry (H) for inductance. The Fundamental Principles of Electromagnetism The word electromagnetism comes from a combination of the Greek works elektron, meaning amber and magnetis lithos, meaning Magnesian stone, which is a magnetic iron ore. The ancient Greeks were familiar with electricity and magnetism, but considered them to be two separate phenomena. The relationship known as electromagnetism wasnt described until James Clerk Maxwell published A Treatise on Electricity and Magnetism in 1873. Maxwells work included twenty famous equations, which have since been condensed into four partial differential equations. The basic concepts represented by the equations are as follows:   Like electric charges repel, and unlike electric charges attract. The force of attraction or repulsion is inversely proportional to the square of the distance between them.Magnetic poles always exist as north-south pairs. Like poles repel like and attract unlike.An electric current in a wire generates a magnetic field around the wire. The direction of the magnetic field (clockwise or counterclockwise) depends on the direction of the current. This is the right hand rule, where the direction of the magnetic field follows the fingers of your right hand if your thumb is pointing in the current direction.Moving a loop of wire toward or away from a magnetic field induces a current in the wire. The direction of the current depends on the direction of the movement. Maxwells theory contradicted Newtonian mechanics, yet experiments proved Maxwells equations. The conflict was finally resolved by Einsteins theory of special relativity. Sources Hunt, Bruce J. (2005). The Maxwellians. Cornell: Cornell University Press. pp. 165–166. ISBN 978-0-8014-8234-2.International Union of Pure and Applied Chemistry (1993). Quantities, Units and Symbols in Physical Chemistry, 2nd edition, Oxford: Blackwell Science. ISBN 0-632-03583-8. pp. 14–15.Ravaioli, Fawwaz T. Ulaby, Eric Michielssen, Umberto (2010). Fundamentals of applied electromagnetics (6th ed.). Boston: Prentice Hall. p. 13. ISBN 978-0-13-213931-1.

Functional Family Therapy ( Fft ) - 1192 Words

Functional Family Therapy. Functional family therapy (FFT; Alexander Parsons, 1982) is based on the premise that the behaviours of each family member serve a certain function within the family system. In the context of conduct disorders and antisocial behaviours, FFT views these behaviours as serving a necessary function for the child in the family system, which is then the reason why the child continues to engage in those deviant behaviours (Baker, 2012). For example, the antisocial behaviour of the child could function in receiving support and intimacy from other family members. The goal of FFT, then, is to produce an environment of adaptive family functioning by changing the dysfunctional behavioural cognitive aspects of the family, and also the communication patterns between family members (Baker, 2012). Compared to the above-mentioned treatments, FFT has been less well researched and there is mixed research regarding the efficacy of FFT as a treatment for CD and antisocial behaviours in children. Earlier studies of efficacy and effectiveness (Alexander Parsons, 1973; Alexander et al., 1994; Klein, Alexander, Parsons, 1977) found positive outcomes for youth with antisocial behaviours, namely that FFT was more beneficial for children with CD than other forms of therapy, as well as control groups, in improving family interactions and decreasing rates of reoffending. However, more recent studies, such as those containing substance-abusing adolescents, failed toShow MoreRelatedEvidence-Based Practices For Youth Offenders1343 Words   |  6 Pages-Based Practice Functional family therapy (FFT) is an evidence-based practice (EBP) for high-risk youth that concentrates on multifaceted and multidimensional issues through a practice that is validated by research, culturally diverse, and submissively structured (Robbins, 2016). Furthermore, the FFT program’s goal is to increase protective factors while decreasing the risk factors that have a direct impact on youth offenders (CrimeSolutions.Gov, 2011). Over the past 40 years, FFT has evolved andRead MoreDeveloping a Counseling Plan1701 Words   |  7 Pagesarrest, and subsequent prison sentence, at the age of 16. The paper will explore his early life and family issues leading to his delinquent behavior as well as counseling theories and interventions that would be successful in treating a youth with similar difficulties. Case Study Mark Wahlberg, known to many as Marky Mark, was born the youngest of nine children in a working class Irish Catholic family (Mark Wahlberg biography, 2013). For Mark Wahlberg, trouble started when his parents divorced.Read MoreCouple Therapy: Overview of Goals Assessment and Intervention1421 Words   |  6 Pagesï » ¿Couple Therapy: Overview, Goals, Assessment and Intervention Dan and Helen is a couple who sought therapy because of a problem they have that is sexual in nature: they apparently differ in values and beliefs when it comes to sexual expression. Helen is more expressive than Dan, both in communicating her feeling of dissatisfaction with their sex life and expressing her sexual desire and needs to her husband. The environment she grew up in developed her belief that desire should be expressed withoutRead MoreProgram Theory And Logic Models909 Words   |  4 PagesSection 02 October 6th, 2015 Section 1 1. In general the purpose of the Functional Family Therapy Program is a short-term family-based prevention and intervention treatment applied across various context for treatment of at-risk and juvenile adolescents to address delinquent and behavior problems in hopes to modify community relations. The specific activities offered by the program are develop systemic and individualized family-based orientation to address behavioral problems of at-risk and juvenileRead MoreBiological Dimensions Within The Multipath Model Essay1506 Words   |  7 PagesModels for Conduct Disorder Multisystemic Therapy Multisystemic Therapy [MST] is used for children presenting severe CD symptoms. An MST belief is that the child is within simultaneous systems, including but not limited to family, school, neighborhood, and peer groups. These systems have a direct and indirect influence on the child and his or her interactions and behaviors. (Henggeler Sheidow, 2012, p.5) This therapy direction treats the entire family group, not just the child as it recognizesRead MoreIndividual And Family Structured Therapy Models Essay1246 Words   |  5 PagesWithin both individual and family structured therapy models, there exists pros and cons. Individual therapy, as mentioned before, is centered around a client–counselor interaction, where the counselor focuses his or her attention on the client’s needs. This provides a one–on–one interaction that encourages openness and security. During individual therapy, the client has the counselors undivided attention. This in return allows the counselor to focus specifically on the clients concerns. As we’veRead MoreThe Intervention Program For Children And Their Parents Essay1786 Words   |  8 Pagesproviding transportation and paying each family for their participation was useful in preventing participants from dropping out of their treatment program. McNeil, Herschberger, and Nedela (2013) suggest that both Structural Family Therapy and Community Family Therapy are useful in helping to change the family system can help prevent youth living in poverty from gang involvement. They state that family therapists have a responsibility to help change family systems as well as other larger societalRead MoreJuvenile Delinquency Treatment : Description And Fundamental Principles1452 Words   |  6 Pagesprograms are another form of juvenile delinquency treatment. Multi-Systemic Therapy (MST) and Functional Family Therapy (FFT) are two examples of evidence-based programs. The MST program is designed to help parents deal effectively with their child’s problematic behavior, while the FFT program targets youth with substance abuse, delinquency, or violence inside of the home. Both of these programs aim to improve the family structure, to better the present and the future of the child (Delinquency PreventionRead MoreChild And Adolescent Behavioral Health Final Examination1188 Words   |  5 Pagesyouth worldwid e, and although it is the children who experience symptoms directly, implications associated with mental illness can impact entire families (Richardson, Cobham, McDermott Murray, 2013). As such, healthcare systems are being redesigned to include a focus on family-centeredness. In the case of children’s mental health specifically, family-centered coordinated care represents an understanding of treatment, not only derived from the child’s experience, but also from the parents’ and caregivers’Read MoreThe Poem The Above Poem, By Henry Wadsworth Longfellow Essay1788 Words   |  8 Pagesthe poem. The poem continues on and in the final stanza it describes the corporeal punishment that the little girl is given due to her behaviors. This illustrates that as far back as the nineteenth century, childhood behaviors were present within family environments which were treated with responding parental anger and punishment. During this early era, the profession of psychology had little interest in childhood disorders, dismissing them as a moral or discipline issue. Described by Joseph Rey

An Epic Evaluation of Apocalypse Now free essay sample

In 1979, Francis Ford Coppola unleashed a film that reshaped the view of the American Vietnam war. The film was heralded as an epic of modern film. However, is it truly an epic or is that term become a widely used word for great works of cinema? Does Apocalypse Now contain the epic criteria of religion, a journey, a vast setting, a sense of supernatural and other key factors? The journey in Apocalypse Now is Captain Benjamin Willard’s mission to assassinate Army Colonel Walter Kurtz. The former Green Beret has deserted his command and now leads a rogue army of commandos and Montagnard, the indigenous people of the central highlands of Vietnam(Human Rights Watch). This film is also a journey into the darkness of the human soul. As Willard travels up the river he spends most of his time reading the Army’s dossier on the rogue Kurtz who has been deemed insane after his use of â€Å"unsound methods. † Willard tries to understand the actions of Kurtz, and as the film progresses, Willard experiences more and more of the absurdities and immorality of war that lead him to understand the villainous Kurtz. His understanding comes with his own decent into near madness. After he senselessly kills a peasant woman on a sampan Willard states, â€Å"It was the way we had over here of living with ourselves. We’d cut them in half with a machine gun and give them a Band-Aid. It was a lie— and the more I saw of them the more I hated lies. † These words sound as though they were uttered by the insane Kurtz. The setting for Apocalypse Now is the fictional Nung River(Milks). Most of the film takes place on a Navy river patrol boat (PBR) with a four-man crew. The captain, Chief, a military man who follows protocol to a â€Å"T†and feels personally responsible for the fate of his crew. He blames Willard for the predicament that they find themselves in. Clean is a seventeen-year-old mechanic from the South Bronx. He is symbolic of the young men that fought in Vietnam that were ignorant to the ways of war and only waste time waiting to end their service careers. Chef, a saucier from New Orleans, who emphatically does not want to be in this strange land and Lance, a California surfer, make up the rest of the crew. Lance and Chef’s use of rugs and placement in the primitive jungle help them withdraw from the war around them as the film proceeds(Milks). This is symbolic of how many of the drafted youth felt in Vietnam. The film begins in the Greek tradition of en medias res. It opens with captain Willard in an alcohol induced depressive state in a hotel room in Saigon in 1968. He already completed one tour of duty in Vietnam only to return home and be miserable with the confines of civilization. He states, â€Å"I was discharged from the army four years ago. I went home, wasted some time, bought a Mustang Mach 1, drove it a week. Then I re-upped for another tour. No, everything I love is here. † He has been irrecoverably changed by the war. He feels that the jungle is the only place he belongs and he cannot wait to get back in action, â€Å"Every minute I stay in this room I get weaker. And every minute Charlie squats in the bush he gets stronger. † The film does not follow all the guidelines of an Epic in the Greek sense. In the beginning, Willard does not invoke the muses and the only religion is the Montagnards belief in Kurtz as a god. The film contains no epic lists and the film is not divided into twenty-four books. The only division in the film could be seen in the different episodes the crew faces traveling up river. The first is the rendevous with Lieutenant Colonel Kilgore, commander of the Air Ninth Calvary. Then, the tiger attack in the jungle, the U. S. supply depot complete with Playboy Playmates, the French rubber plantation, the small sampan, and the ancient temple where Kurtz resides. Each event adds to the mayhem of the journey and creates a darker mood for the film. The narrator and protagonist of the film is Captain Willard. However, he is not the epic hero because he does not meet the criteria. He is male, and he does have a task to complete, but that is about his only heroic characteristics. First, in terms of strength, he does not possess outstanding physical strength, nor is he mentally strong. As a character is quite passive, everything he does is influenced by someone, or something else. When he takes the mission he says, â€Å"What the hell else was I gonna do? † On the PBR, he withdraws himself from the actions of the crew, and spends most of his time studying the file on Kurtz, trying to get into the mind of his target. This only puts him in a more detached state. At Kurtz’s compound he is swayed by the teachings of Kurtz and makes the audience ponder if he will indeed carry out his mission, or join Kurtz’s group. Lance, as well as the last assassin sent to kill Kurtz, did just that. Willard confesses â€Å"It was the strangest thing — I don’t know that I can explain it. Two of my men dead and all I could think of was whether Kurtz was dead too. That’s all I wanted: to see Kurtz, to hear Kurtz. † Kurtz actually helps make that decision for him. Kurtz is weary of his life as a demigod and is expecting, and actually welcoming his death. You came up my river — in that small boat. So simple. I always thought the final justice would come from the sky, like we did. You are the final justice, aren’t you? † In one episode, on a sampan, a small fishing boat, Willard shows his true moral state. When Clean opens fire killing several civilians in a botched search of the boat, Chief decides to t ake the lone survivor, a peasant woman, to a military base for medical attention. Willard, thinking only of his mission, kills the woman so that she will not impede his journey to assassinate Kurtz. This event causes the rest of the crew to turn on him and cast a dark shadow over Willard. When Chef asks, â€Å"When you kill cong, don’t you feel something? † Willard responds, â€Å"Sure, recoil I feel the recoil of my rifle. † This statement alone solidifies the fact that Willard is not a fundamentally good soul. The supernatural is an important element in any Epic. In Apocalypse Now, the supernatural pertains more to a detachment from reality than to a ghost, miraculous events, or the common notion of the supernatural. In this sense, the film is rife with the supernatural. First Kilgore’s calvary, the surfing calvary charge into battle listening to the â€Å"Ride of the Valkyries. † Kilgore boasts, â€Å"We’ll come in low, out of the rising sun, and about a mile out, we’ll put on the music Yeah, I use Wagner – scares the hell out of the slopes! My boys love it! † The music and the surfing are completely out of place in the war-torn jungles of Vietnam. However, this is just the first stop on the tour of mass mayhem. Later in the film, the PBR comes across the remains of a rubber plantation. This is a plantation run by the de Marais family, a hold over from the French colonization of Indochina. In the middle of a war zone, a family is trying to hold onto a piece of property in a country in which they are not natives. Several of their family members have given their lives for that property and they believe they have just as much as a claim to it than anyone else. Even when a family member makes a symbolic gesture that makes a statement about America’s involvement in Vietnam and cracks an egg, which represents Indochina, lets the egg white run out and exclaims, â€Å"White goes, yellow stays! † The symbolism is poignantly blunt. It is surreal that they even attempt to keep their property. Also, they try to maintain their heritage in speaking French and having a tradition plantation life without interference from the outside world. The scene, including the burial of Clean is rife with symbolism and detachment from reality. The boat heads further up river and reaches an outpost where American forces are testing Einstein’s theory of insanity. Einstein once said, â€Å"The definition of insanity is doing the same thing over and over and expecting a different result. †(Moncur) Each night the Viet Cong bomb a bridge and each day the G. I. s rebuild it. All of the soldiers at this base are either scared or confused, those that are not, are high on drugs. The colored flares and tracer rounds add to the effects of the psychedelic drugs and the whole theater of battle is in total chaos. Finally, Kurtz’s compound is the scene of total lack of reality. Rotting corpses hang from the tress, and heads litter the ancient temple. The scene is surreal. A burnt out photo journalist exclaims how great Kurtz is, seemingly oblivious to the mayhem around him. The man himself is a larger than life omnipotent character. He remains in the shadows for almost every scene and quotes poetry from T. S. Eliot. He is the all powerful in this land even though he is gone over the edge mentally, spiritually, and physically. He is supernatural. The film as a whole doesn’t fit the standards of an epic in the Greek tradition. However, it is an awesome tale of a man’s journey into the physical unknown of a strange land that forces him to search inside himself for some form of morality in the difficult circumstances of war. Willard is a stranger in a strange land, even to himself.

Movie Review Essays (1252 words) - Asia, Fiction, Films, Gran Torino

Movie Review Gran Torino Diversity in the workplace ADM 315 ML Dr. Brenda Deans Barry University Carmen Y. Bigas Date: October 27,2016 Main characters Walt Kowalski (Clint Eastwood), a retired Polish American Ford automobile assembly line worker and Korean War veteran, haunted by memories of that conflict, lives with his Labrador Retriever Daisy in a changing Highland Park, Michigan neighborhood which is dominated by immigrants. Thao Vang Lor (Bee Vang ) and his sister Sue Vang Lor ( Ahney Her), live with their widowed mother and grandmother. Thao is in a Hmong gang led by his cousin Spider. Sue being a bit feisty herself but friendly and a bit curious about her neighbor Kowalski. Summary At the start of the movie, Walt is attending his wife's funeral, bristling at the shallow eulogy of young Father Janovich. Similarly, he has little patience with his two sons, Mitch and Steve, and their families, who show little regard for Walt's grief or the memory of their dead mother. Throughout the movie Walt views his relatives as rude, spoiled and self-absorbed, always avoiding him unless it is in their own interest to pay him some attention. Father Janovich tells Walt that his late wife, Dorothy, made Father Janovich promise to try to get Walt to go to a confession. Walt writes Janovich off as knowing nothing about life or death, and insists on being called Mr. Kowalski rather than Walt because he feels he neither knows, nor wants to know, Father Janovich. Walt's teenage Hmong neighbors, Thao Vang Lor and his sister Sue get comfronted by a Hispanic gang. The Hmong gang, led by Thao's older cousin, helps Thao by frightening the Hispanic gang and forcing them to flee. The Hmong gang, at that point, tries to persuade Thao to join them. Thao's initiation is to steal Walt's prized car, a 1972 Gran Torino Sport. Walt interrupts the robbery, pointing a rifle in Thao's face and forcing him to flee. After a few days, Spider and his gang return. With Sue at his side, Thao manages to verbally confront them to no avail. The gang drags Thao off his porch in an attempt to assault him. His family tries desperately to fend off Spider and his cohorts. The conflict ends when Walt threatens the gang members with his rifle and orders them to get off his lawn. They leave the neighborhood, telling Walt to watch his back.The Vang Lors thank a grumpy and impatient Walt, who insists he only wanted the gang off his property. When the neighborhood hears of Walt's brave act, they reward him by leaving on his porch gifts of Hmong dishes and garden plants. Thao admits to trying to steal his Gran Torino. Walt is not pleased, seeking only to be left alone.Mitch and his wife, Karen go to visit Walt on his birthday, bringing him a cake and a few gifts meant to make certain menial tasks easier as they were trying to convince Walt to move to a retirement home. Knowing that Mitch and Karen just want to get their hands on his house, Walt in anger throws them out; gifts, cake and all. After seeing Sue being harassed by three black teenagers, Walt steps in to rescue her, confronting the teenagers and threatening them with a pistol. Sue gets to know Walt, and invites him to a family barbecue on his birthday, bringing him closer to her family, explaining Hmong culture and that during the Vietnam War they fought on their side. Sue, Thao, and their mother visit Walt the next day, with Thao's family forcing him to work for Walt for a week to fix the fact off his attempted theft of the Gran Torino. Walt has Thao clean up the neighborhood until his debt is paid and shows Thao the ways of American men. He gets Thao a construction job and encourages him to ask out anoth er Hmong girl called Youa.After discovering blood when he coughs, Walt visits the doctor. After viewing the results of his examination, which indicate that his health isn't good, he calls his son Mitch and awkwardly tries to tell him about it; but he can't bring himself to do it and