The Language Arts Program - 1379 Words

Part A What is the Null Hypothesis (Ho)? There is no difference in mean WAVFT score between student who did not take the language arts program and the students who did. What is the Alternative Hypothesis? There is a difference in mean WAVFT score between students who did not take the language art program and the students who did. What is (are) the Independent Variable(s)? The independent variable of this study is the language arts program. There are two levels: students who did take the language arts program, and students who did not take the language arts program. What is (are) the Dependent Variable(s)? The dependent variable of this study is the scores from Western Australian Verbal Fluency Test (WAVFT). Describe the possible†¦show more content†¦Meanwhile, it is also beneficial to do a repeated-measure design with a pretest; this procedure could help to minimize random and unsystematic differences. Part B: Research Analyses – t-test Results and Discussion A paired samples t test with an a of .05 was used to compare mean amount of eye contact between infants aged six months (M=7.25, SD = 1.909), and nine months (M = 8.75, SD = 2.053). On average, the amount of eye contact among infants aged nine months is higher than the six-months (M = 1.5, SD = 2.138), in this study. The mean difference was not statistically significant, t(7) = -1.984, p = .088, d = 0.76, two tails. (see figure 1) Figure1. Number of one-minute segments with eye-contact at different age. The present study suggests that there is no significant evidence to show that different age leads to different amount of eye contact during infancy. However, this result might be caused by the small sample size, because the effect size in this study is relatively large. This study design has two possible confounds: first is the individual differences in terms of temperament, second is that the difference in the amount of eye contact might relates to different everyday child-adult interaction pattern. To improve the validity of the study, it is essential to increase the size of sample, meanwhile, it is important to notice that primary social caregivers should not only implied as the mother of

What does it mean to learn Free Essays

Needless to say, learning is the most fundamental part of our daily experience. From the time we are born, we are learning how to walk, owe to talk, different emotions, and so on. The study of how learning occurs is part of educational psychology, neurophysiology, learning theory and pedagogy. We will write a custom essay sample on What does it mean to learn or any similar topic only for you Order Now Pedagogy is the science and art of education: it is the study and practice Of how best to teach. The benefits Of learning is the ability to develop natural abilities such as learning from one’s past mistakes, creativity ways of thinking, and increased brain power. Our mind is our most powerful weapon; it helps us adapt to change, makes social groups, and establishes valuable relationships. It also helps us establish lines of daily communication. Learning efferent languages impacts our attitudes and correlates to academic achievements. As a person our main focus is achieving a better sense of self, learning leads to this self-fulfillment. It will keep your mind and memory sharp, increases confident, offers inexpensive ways to try something new, feeling of accomplishments, and even offers opportunities to learn new skills and trades to increase income. We do not learn just by being taught during class or lecture, we learn by continuously being shown something throughout our lives. Whether it is in science class or behaviors taught by our parents, we learn about what is right r wrong, increased advantages from language studies, and ability to take care of one’s self. What is it to learn? Learning is not the same for everyone. Although we are taught mostly the same things, how to eat, how to read, we progress in different ways. Therefore, learning encourages us to form personalities. It gives us stability in repetitive activities. The best thing for being sad,† replied Merlin, beginning to puff and blow, â€Å"is to learn something. That’s the only thing that never fails. You may grow old and trembling in your anatomies, you may lie awake at night listening to the disorder of your veins, oh may miss your only love, you may see the world about you devastated by evil lunatics, or know your honor trampled in the sewers of baser minds. There is only one thing for it then -? to learn. Learn why the world wags and what wags it. That is the only thing which the mind can never exhaust, never alienate, never be tortured by, never fear or distrust, and never dream of regretting. Learning is the only thing for you. Look what a lot of things there are to learn. † White, The Once and Future King Learning is by far the best gift in this world. It provides us with more than just basic knowledge. It gives us meaning to the very questions we ask ourselves. How to cite What does it mean to learn, Papers

Sociology of Deviant behavior-Free-Samples-Myassignmenthelp.com

Question: Write an Essay on Deviance, Difference and Conformity. Answer: The concept deviance is one of the most prominent sociological discussions that has received significant illumination by various authors. It is conceptualized as the tendency or practice by individuals or a group of individuals that is contrary to the societal norms. In other words, deviance is seen as a negation of the societal set standards of how one should behave. Several sociological theories explain deviance, and one fact that stands out is that deviance is a significant aspect of the society. It is a dominant issue in the society hence it is not easy to have a utopian society free of deviance or deviants. Some of the theories that explain deviance include; Robert Merton's cultural strain theory (a development of the functional structuralism theory), labelling theory, social control theory, and the theory of differential association. In this sense, therefore, this paper discusses how the sociology of deviance continues playing a useful role in the social world. Durkheim, the father of sociology, underpins the importance of deviance as maintaining order in the society. Durkheim thus based his works on the structural, functional theory. The theory sees the society as a complex structure made up of other structures that must cooperate to maintain the function and stability of the entire society (Little et al. 2012: 10). These interrelated parts include both social structures and social functions. Durkheim, therefore, perceives deviance as an important aspect of the society. He thus posits four roles played by deviance within the society. According to him, deviance; affirms cultural values and norms, promotes social change, acts as a unifying factor, and judges between wrong and right (Little et al. 2012: 16). Durkheim also highlights another concept of social solidarity as an essential element that holds the society together. In this view, he argues that societies evolve from the mechanical solidarity to organic solidarity. The central point t hat marks this transition is the division of labour. According to him, a society characterized by mechanical solidarity is a rather simple society with low division of labour, high religious commitment, and people with shared roles and responsibilities (Little et al. 2012: 33). Conversely, an organic society is complex and defined by secularism, individualism and higher division of labour. For this reason, a society characterized by organic solidarity has a strong sense of interdependence. However, despite Durkheim's earlier support for deviance being an important aspect of the society, in his contextualization of the social solidarity, he de-emphasizes its significance and instead focuses on the role of division of labour. Such an undertaking suggests that deviance is an unfashionable concept in the Durkheimian model of social solidarity and thus cannot be applied in the context of Australia which is depicted as a modern diverse and progressive society. Nonetheless, even if the model supports the notion of the death of deviance sociol ogy, it is quite evident that deviance is still and continues to be present in the societies (Feinberg, 2016: 296). Moreover, though some argue that the sociology of deviance died some years back, then if one must talk about it, they ought to talk about it in terms of resurrection (Taylor, Walton and Young, 2013: 33). The sociological approach to deviance provides two fundamental insights. Firstly is the contextual definition of deviance. Secondly, deviance is not inherently a psychological or biological element of an individual but is a product that results from social processes (Clinard and Meier, 2008: 321). These two insights according to Shulte (2001: 132) conclude about the inevitability of deviance. Borrowing from the former insight, for instance, an act may be termed as deviant in one context but not in another. Therefore, the understanding of a deviant and nondeviant act calls for contextualization of a given context, the existing rules, and the establishment of the rules (Feinberg, 2016: 296). Essentially, when a set of given rules change, that which is defined as deviance also changes. Moreover, Feinberg (2016: 297) and Roach (2006: 23) argue that rules and norms change from one culture to the other, and so do the notions of deviance. Deriving from the second insight, it is clear that t he contexts of norms and values that determine the deviant and nondeviant acts are continuously defined and redefined by some social processes that include cultural processes, political processes, legal processes, and religious processes among others (Roach, 2006: 32). Various theories explain deviance and therefore ascertain its existence and continuity. The affirmation of these theories in itself is a depiction that sociology of deviance is not dead but resurrected in the social world (Downes, Rock, and McLaughlin, 2016: 19). The structural strain theory was developed by an American sociologist, Robert Merton. Merton saw deviance as emanating from the tension caused by the culturally defined goals and the means of achieving them. According to Merton, society is made up of the culture and the social structures. The former provides the goals while the latter provides means through which the goals are attained. An ideal society, people, use the socially acceptable ways to achieve the goals. In other words, there is a balance between the means and the goals. On the other hand, deviance results whereby the goals and means do no balance. Another theory that explains deviance is known as the labelling theory. The theory assumes that there is no natural criminal act. In this notion, therefore, the proponent argue that criminality is interpreted by law (Downes, Rock and McLaughlin, 2016: 23). Additionally, deviance is not a characteristic of any group or individual. It rather results from the relationship between non-deviants and deviants. Labelling of criminality to an individual by others acts as a precipitating factor that drives one into deviant behaviour. In addition, Travis Hirschi developed the theory of social control. Hirschi proposed that deviance results from a weakened social bond that a person or group is attached (Tepperman, L. and Tepperman, 2010: 11). According to this theory, people pay substantial attention to what others say about them hence conforming to the social expectations (Pratt and Cullen, 2000: 44). The theory also posits that socialization results in conformity to the social norms. Nonetheless, deviance always occurs when the conformity is broken (Schmalleger and Volk, 2013: 19). The theory differential association by Edwin Sutherland maintains that people develop criminal behaviour through interacting with others. From these relationships/interactions, people learn the values, attitudes, motives and techniques of criminal behaviour (Pratt and Cullen, 2000: 46). The scrutiny of Sutherland's theory implies that deviance or deviant acts occur as a result of the learning experience as well as the social influence. In general, when one considers the theoretical explanations of the causes of deviance, it becomes evident that these causes are manifested in the societies (Schmalleger and Volk, 2013: 56). The sociology of deviance, therefore, is not dead so as long as its causes are evident in the society. According to Miller, Wright and Dannels, (2001:43, 56), the declaration by some scholars that the sociology of deviance is dead is mere exaggeration and allegations. The centrality of their sentiment is based on the fact that the commentators (about the death of the discipline) are scholars in other fields but not sociology. In their scrutiny of one Sumner's study subtitled Obituary (1994), Miller, Wright and Dannels, (2001:43) argue that they evaluated the study works and scholars cited regarding the sociology of deviance. The scholars, therefore, examined the published research notes, journals, articles and textbooks. Their research indicated that more than one-half of the scholars cited were researchers in other fields, mainly criminology, and not in the sociology of deviance. Nonetheless, they also noted two sources whose scholars studied sociology of deviance. Although this number may have been used to show the declining scholarship in the sociology of deviance, one would argue that the intention was not to declare its death. Similarly, Goode (2003: 510) is opposed to the proposition on the death of sociology of deviance. He connotes that his colleagues in colleges held the view that the discipline was long gone. In his assertion about the existence and relevance of the sociology of deviance Goode (2003: 511) remarked that the concept of deviance and course of deviance was still vital and relevant. He also noted that his textbook on deviance was not only selling pretty well but had also been edited several times and translated into Hebrew. Similarly, other books on deviance particularly his colleagues' (McCaghy, Capron, and James (2003): Clinard and Meirer (2001): Thio (2003): Adler and Adler (2003) and many others were highly selling. Additionally, Goode rubbished the "plot" on the death of sociology of deviance by arguing that the study of the death has attracted insignificant attention as opposed to whether it still exists. He maintains that with the increased number of students enrolled in studying so ciology of deviance shows its revival and that the connotation that the discipline is death symbolizes bias (Doode, 2003: 520). In summary, the study and understanding of the sociology of deviance borrow mostly from the many theories that illuminate it. It is clear that whether the issue whether the sociology of deviance died is disputable. The paper has illustrated how the sociology of deviance still has its roots in the social world. Additionally, theories that explain deviance show how deviant behaviour occur and persist in the society. The acts of deviance are still observable in the society hence one cannot dismiss the relevance of the field. Although some scholars may contend that the sociology of deviance ceased existing, this paper has clearly shown that there is the resurrection of the same. References Clinard, M.B. and Meier, R.E., (2008). Sociology of Deviant behaviour 13th ed. Belmont CA: Thomson Wadsworth. Downes, D., Rock, P. and McLaughlin, E., (2016). Understanding deviance: a guide to the sociology of crime and rule-breaking. Oxford University Press. Feinberg, S.L., 2016. The Death and Resurrection of Deviance: Current Ideas and Research. Contemporary Sociology: A Journal of Reviews, 45(3), pp.296-297. Franzese, R.J., (2015). The Sociology of Deviance. Charles C Thomas Publisher. Goode, E., (2003). the macguffin that refuses to die: an investigation into the condition of the sociology of deviance. Deviant Behavior, 24(6), pp.507-533. Little, W., Vyain, S., Scaramuzzo, G., Cody-Rydzewski, S., Griffiths, H., Strayer, E., Keirns, N. and Mcgivern, R., (2012). Introduction to Sociology-1st Canadian Edition. BC Open Textbook project. Miller, J.M., Wright, R.A. and Dannels, D., (2001). Is deviance" dead"? The decline of a sociological research specialization. The American Sociologist, pp.43-59. Pratt, T.C. and Cullen, F.T., (2000). The empirical status of Gottfredson and Hirschi's general theory of crime: A meta?analysis. Criminology, 38(3), pp.931-964. Roach, A.S.L (2006). Deviance, conformity and control (4 ed). Frenchs Forest, N.S.W. : Pearson Longman Schmalleger, F.J. and Volk, R., (2013). Canadian criminology today: Theories and applications. Pearson Education Canada. Shulte, A., (2001). Theories of Deviance. Teaching Sociology, 29(1), p.132. Taylor, I., Walton, P. and Young, J., (2013). The new criminology: For a social theory of deviance. Routledge. Tepperman, L. and Tepperman, A.,(2010). Deviance, crime, and control: beyond the straight and narrow. Oxford University Press.

Tony Kushner Angels In America Essays - Julius And Ethel Rosenberg

Tony Kushner: Angels In America Explore how any playwright of the time has successfully dramatised a social issue. Contemporary theatre has stepped further and further away from the sugar-coated happy society plays and musicals that once dominated Broadway and the West End. Now, harsher more realistic stories with issues facing today's society and politics are shocking that conventional-type of theatre. ?Shock is a part of art. Art that's polite is not much fun? (Kushner:Bernstein). One of these stories that have made this kind of impact on modern drama and theatre is Tony Kushner's ?Angels in America.? Described as ?the best American play in forty years,? this two part play (?Millennium Approaches? and ?Perestroika?) gives to life a variety of different issues facing not just the American society it is set in but the modern world as well (Lucas). With the main story line dealing with gays, politics, and AIDS in the 1980s, with this ?A Gay Fantasia on National Themes' Kushner has successfully explored these issues in further detail ultimately ?nudging Broadway into the 21st century? (Winship). The gay revolution took place in America in the 1980s which, consequently, is the setting for ?Angels in America?. The strong economy gave many of ?Reagan's children? power and courage to be more open with their sexuality (Part One: Act II, scene vii). People were ?coming out', so to speak, more than in previous decades. With five out of eight of the main characters in the play being gay males, and half of those in high power positions (i.e. law), the setting and political information discussed support the truth that Kushner writes about the gay community. ?Good politics will produce good aesthetics, really good politics will produce really good aesthetics, and really good aesthetics, if somebody's really asking the hard questions and answering them honestly, they'll probably produce truth? (Kushner:Bernstein). There is truth at the most basic of levels when, Joe, chief clerk for a Federal Court of Appeals judge, admits that he is homosexual (Part One: Act II, scene viii). Also truth to the most extreme, a consequence leading to death for many homosexuals: HIV and the AIDS virus, involving Roy the successful lawyer/power broker (Part Two: Act IV, scene viiii). ?Angels in America? is not just a ?gay play', but a play about American politics as well. The appearance of politics, not to mention homosexuality and AIDS, are issues resisted by most critics and audiences. Despite the odds, the subjects have proved successful to Kushner. The political element in this play is one that is a key in the story line and something not seen in many plays before this time. ?Is it that Americans don't like politics, or is it that so much theatre that is political isn't well done (Kushner:Bernstein) It is mentioned in detail and is even non-fictional, as mentioned in Kushner's disclaimer for ?Perestroika?. This type of detail given at an aesthetic approach essentially gives the audience a life-like story and the characters that life to portray. The change the Reagan era caused in politics and the country is expressed by these characters as a part of that society. For example, Joe, representing the optimistic opinion, discusses with Harper the positive change that the Reagan administration has given to the country: ?...For the good. Change for the good. America has rediscovered itself. Its sacred position among nations. And people aren't ashamed of that like they used to be...The truth restored. Law restored. That's what President Reagan's done....We become better. More good...? (Part One: Act One, scene v). As Belize, representing the more pessimistic opinion, discusses to Louis of his hate of America under Reagan: ?Well I hate America, Louis. I hate this country. It's just big ideas, and stories, and people dying, and people like you...I live in America, Louis, that's hard enough. I don't have to love it...? (Part Two: Act IV, scene iii). The varying opinions, openly discussed by these characters, represent the same doubts and hopes of that American society. ?I think that a character's politics have to live in the same sort of relationship to the character's psyche that people's politics live in relationship to their own psyches? (Kushner:Bernstein). Just the detailed political statements that the characters give in relation to society are enough to leave

Mike Tyson the Iron Life Essay Example

Mike Tyson the Iron Life Essay Example Mike Tyson the Iron Life Essay Mike Tyson the Iron Life Essay Chris Torres Mr. Breen History-1945 The Life of â€Å"Iron† Mike Tyson What do you think it takes to be called â€Å"Iron† Mike Tyson? What kind of experiences do you have to go through before you are labeled as the â€Å"Baddest Man on the planet†? What people don’t understand is the life style and background in which Mike Tyson grew up in. The surroundings meaning the streets, the gangs and the era of drugs kicked in and kicked in enough that teens were aware of what was on the streets and how to get it. Every person is different and no matter what the case is if you don’t have the proper parenting and descent area to live in then chances of you engaging in crimes are very high. Mike Tyson got lucky with the talent that he had but if not found and trained the way he was then he would have committed worse acts than the ones committed to this day. He made the best out of his talents but it goes to show you that money, fame and your athletic abilities won’t hide where you came from and the life you once lived not too long ago. Mike Gerard Tyson was born of June 30th, 1966 in Brooklyn, New York from the parents of Jimmy Kirkpatrick and Lorna Tyson. Sadly only after two years together Mikes Father decided it was too much for him to handle and left his mother with little Mike. Mikes mother didn’t have a lot of riches. It was hard for her to come up with money so they moved to a town in Brownsville, New York where unfortunately was known for their high crime rate. Mike was a very shy small kid. He also was the target of bullying from older kids and other distractions around the way. To add insult to injury Mike began developing his own style of street fighting. Building his experience of being a criminal, the mentality is what drives you to continue committing crimes. Once you have felt that feeling even when you get rid of that criminal feeling it will still be in the back of your mind waiting for another chance to take over. Gang banging is a parent’s worst nightmare. Not knowing right from wrong and the lack of discipline was the problem with Mike. Lacking a father figure hurts emotionally and mentally. Mike joined a gang around his neighborhood called the Jolly Stompers. A name with the ability to speak for itself, kids that enjoying committing crime. Committing robberies with the older members and giving mike assignments like cleaning out the cash register when victims are held at gun point. A kid doing this at an age you would be never guess, 11. This was a kid that often ran in contact with the police over his small petty criminal activities and by the age of 13 Mike was arrested an astounding 30 times. Mike Tyson’s horrible behavior gave him a boot out of his public school and into a reform school in upstate New York. Although it was a tough time for Mike something great came out of leaving the school in where he came from. Mike met a counselor by the name of Bob Stewart who had previously been an amateur boxing champion. Mike made a decision which could have been the turning point of his life by asking Bob if he could train him how to use his fist but with every offer comes a sacrifice. Mike would have to stay out of trouble and do better in school. Two things that are expected out of kids that go to school. Mike did so and was determined to learn it all when it comes to the boxing life. There was one other man by the name of Constantine â€Å"Cus† D’Amato who was a legendary boxing manager. DAmato was known for taking personal interest in promising fighters and he immediately recognized Tysons ambition to be a heavyweight contender, telling him, If you want to stay here, and if you want to listen, you could be the world heavyweight champion someday. (Mike Tysons Biography) Tyson agreed to stay. Constantine not only was his manager but also turned into this father figure that he never had. Cus took Mike under his wing and made sure to his best ability that he would succeed and be one of the best ever. It was around the early 80’s when Mike had entered into DAmatos full-time custody finally someone else than his mother cared about the fatherless kid. But 2 years later in 1982 Mike Tyson’s life would take a turn for the worst when his mother pasted away. A feeling no person wants to go through but has to at one point. One of the greatest debuts in boxing history came when the much anticipated Mike Tyson went against the strong and experienced Hector Mercedes. A quick one and done in the 1st round gave him his 1st hit and the image of an experienced champion. With the help of his two trainers and his work ethic in and out of the boxing ring gave Mike possibly felt the best he has ever felt in a while. This gave Tyson the ability to level his opponents quick in the 1st round, and that earned him the nickname Iron Mike. On November 4, 1985, DAmato died of pneumonia. Tyson was heavily hit by the death of the man he considered his blood father. Boxing trainer Kevin Rooney took over DAmatos coaching duties and less than two weeks later, Tyson continued on the path that DAmato had laid out for him. It goes to show you that guidance and support from people you love and love you back helps you move on to the next obstacle in your life regardless if they are there physically or emotionally. Tyson never fully recovered from the loss and many around the world blamed that to the boxers future behavior problems With the record of a true champion but no titles yet came an opportunity to flip that around. 22-0 with 21 knockouts gave him a title shot against Trevor Berbick for the World Boxing Council heavyweight championship. Tyson knocked out Berbick in the 2nd round making him the new WBC heavyweight champion. Also making him the youngest heavyweight champion of all time, Mike Tyson also gained to more belts and quickly gaining the respect of many. With fame did come some negative distractions to Tyson’s career. Tyson’s life from childhood delinquency to boxing champ put him in the center of the spotlight were most people don’t know how to handle the pressure. Mike became partying harder than ever and hanging with Hollywood stars that he didn’t belong with. Slowly after life as a superstar kicked in everything started to go sour for mike in the worst way. June 1988 both his wife and his manager wanted out of Mikes life as well wanted in on Mike’s money. Mike behavior got worse and worse after getting into street brawls and nearly killing himself by committing suicide trying to crash into the late D’Amato’s home. His family life was getting to the point of no return after his marriage being called â€Å"Pure Hell† by his wife Givens. You would think that one would learn their lesson but mike came back to criminal acts to later be sued by two women after being grabbed and insulted by Tyson. February 11, 1990 a date never to remember if you are a fan of Iron Mike Tyson. His first lose also his first time ever being knocked out by an underdog boxer named Buster Douglas. This fight changed the boxing world and stirred up so much noise about the loss but Mike still had other issues he had to deal with as well. More trouble came after Mike had also lost another fight not in the ring but in the court the day of November 1, 1990 several months after his 1st lose in his career. Mike Tyson was found guilty for both his incidents in his bathroom incident in 88’ and then soon in 91’ when e was accused of raping a Miss Black American contestant. Mike Tyson was ordered to jail for 6 years due to the law of Indiana it also had to be effective as soon as possible. The death of his father didn’t really faze Mike Tyson nor did he really care to take a leave from prison to take part at the funeral. It shows how much hate and disappointment Mike has from that event al one. He is a man of his own and everything he learned was from his own mind due to the fact that his whole life was a mission to find who he really is. He never really gave himself the chance to change because of all the events that occurred during the process of his life expanding. After six years of marriage, second wife Monica Turner filed for divorce  in 2003, on grounds of adultery. That same year, he also filed for bankruptcy after his exorbitant spending, multiple trials, and bad investments caught up with him. Tysons hard-partying ways caught up with him again in late 2006. Tyson was arrested in Scottsdale, Arizona, after almost crashing into a police cruiser. Mike was suspected of driving while intoxicated. Soon after that assumption police pulled Tyson over and searched his car. During the search police discovered cocaine throughout the vehicle. On September 24, 2007, Mike Tyson pleaded guilty to possession of narcotics and driving under the influence. So much of Mike Tyson’s life has been taken away due to the fame and fortune but also from all the bad decisions he made as well. You can’t always get what you want and I feel as if he didn’t act the way he did during every incident he would be fine to this day. Tysons life seemed to mellow over the next few years, and the boxer began seeking sobriety by attending (AANA) Alcoholics Anonymous and Narcotics Anonymous meetings. But in 2009, Tyson was dealt another blow when his four-year-old daughter, Exodus, accidentally strangled herself on a treadmill cord in her mothers Phoenix home. The tragedy  was yet another dark period in Tysons troubled life I want to leave you with a quote said by Mike Tyson that is real and from the heart. Something said due to experience and growth with life aging away from him so quick. The quote goes (Bad Intentions, The Mike Tyson Story) My whole life has been a waste Ive been a failure. I just want to escape. Im really embarrassed with myself and my life. I want to be a missionary. I think I could do that while keeping my dignity without letting people know they chased me out of the country. I want to get this part of my life over as soon as possible. In this country nothing good is going to come of me. People put me so high; I wanted to tear that image down.

10 Facts About the Periodic Table of Elements

10 Facts About the Periodic Table of Elements The periodic table is a chart that arranges the chemical elements in a useful, logical manner. Elements are listed in order of increasing atomic number, lined up so elements that exhibit similar properties are arranged in the same row or column as one another. The periodic table is one of the most useful tools of chemistry and the other sciences. Here are 10 fun facts to boost your knowledge: Although Dmitri Mendeleev is most often cited as the inventor of the modern periodic table, his table was just the first to gain scientific credibility. ​It wasnt the first table that organized the elements according to periodic properties.There are  about  90 elements on the periodic table that occur in nature. All of the other elements are strictly human-made. Some sources state more elements occur naturally because heavy elements may transition between elements as they undergo radioactive decay.Technetium was the first element to be made artificially. It is the lightest element that has only radioactive isotopes (none are stable.)The International Union of Pure Applied Chemistry, IUPAC, revises the periodic table as new data becomes available. At the time of this writing, the most recent version of the periodic table was approved in November 2016.The rows of the periodic table are called periods. An elements period number is the highest unexcited energy level for an ele ctron of that element. Columns of elements help to distinguish groups in the periodic table. Elements within a group share several common properties and often have the same outer electron arrangement.Most of the elements on the periodic table are metals. The alkali metals, alkaline earths, basic metals, transition metals, lanthanides, and actinides all are groups of metals.The present periodic table has room for 118 elements. Elements arent discovered or created in order of atomic number. Scientists are working on creating and verifying elements 119 and 120, which will change the appearance of the table, though they were working on element 120 before element 119. Most likely, element 119 will be positioned directly below francium and element 120 directly below radium. Chemists may create much heavier elements that may be more stable because of special properties of certain combinations of proton and neutron numbers.Although you might expect atoms of an element to get larger as their atomic number increases , this does not always occur because the size of an atom is determined by the diameter of its electron shell. In fact, element atoms usually decrease in size as you move from left to right across a row. The main difference between the modern periodic table and Mendeleevs periodic table is that Mendeleevs table arranged the elements in order of increasing atomic weight, while the modern table orders the elements by increasing atomic number. For the most part, the order of the elements is the same between both tables, though there are exceptions.

Super Heterodyne Receiver Assignment Example | Topics and Well Written Essays - 2500 words

Super Heterodyne Receiver - Assignment Example Contents Contents 3 1.Introduction: 4 2.Super Heterodyne Receiver: Theory: 5 2.1.Structure of Super Heterodyne Receiver: 7 3.Super Heterodyne Receiver: Features: 9 4.Super Heterodyne FM (Frequency Modulation) Receiver: 11 5.Super Heterodyne Receiver: Applications: 12 6.Advantages and Disadvantages of Super Heterodyne Receivers: 13 7.Conclusion: 13 References 14 Appendices 16 List of Figures Serial No. Figure Page No. Figure 1 Block diagram of super heterodyne radio receiver 7 Figure 2 Structure of the Super Heterodyne Receiver 8 Figure 3 Super Heterodyne FM Receiver 12 List of Tables Serial No. Table Page No. Table 1 The Basic Elements of Super Heterodyne Radio Receiver 9 Table 2 Electrical Characteristics of AM Super Heterodyne Receiver 10 Table 3 Advantages and Disadvantages of Super Heterodyne Receivers 13 List of Appendices Serial No. Appendix Page No. Appendix A Signals generated by mixing two signals together 17 1. Introduction: A super heterodyne receiver is defined as a radio receiver where two signals of radio-frequencies are combined by an action of a heterodyne delivering a signal that exceeds the limit of frequency that is audible. Amplification and demodulation of this produced signal produces a desired signal of audio-frequency. A super heterodyne receiver is also called as superhet (Superheterodyne receiver). The primary objective of super heterodyne receiver is production of an intermediate frequency on a constant basis such that efficiency of amplification and uniform selectivity, along with uniform sensitivity can be obtained (Thomas and Sekhar 313). The design of the receiver is usually such that it has a very good power of sensitivity thereby allowing even weak signals to deliver an output that can be considered as significant. However, there are problems with the receiver as well particularly when a strong station is tunes in to by anyone, a high gain occurs as a result of which amplifiers become overloaded causing poor and distorted intell igence of the receiver to deliver the desired signals (Thomas and Sekhar 313). The present study focuses on an understanding the theory and working of the super heterodyne receiver, thereby learning about its circuit, its features, its advantages and disadvantages and its applications. 2. Super Heterodyne Receiver: Theory: The super heterodyne receiver is one of the most popular radio receivers of the present times. It was invented during the end of the First World War by Edwin Armstrong, an American. Since them the use of the receiver has extensively increased in broadcast radios, televisions, and several other types of receivers. The theory behind the concept of the receiver involves a process of mixing. Two signals are multiplied together by with the use of radio-frequency mixers. With such a multiplication occurring with the signals, there is a direct signal delivered at the input and another produced at the output. The frequencies of the input and the output vary from each othe r, thereby leading new signals to be formed. Thus if f1 and f2 are two frequencies of the input signal, then the signals that are formed newly reflect frequencies of values (f1+f2) and (f1-f2) (The superhet or superheterodyne radio receiver). This can be explained by an example (The