Operating Principles of Light Emitting Diode (LED) and Liquid Crystal Essay

Operating Principles of Light Emitting Diode (LED) and Liquid Crystal (LCD) Electronic Displays - Essay Example The P type and N type materials are joined together to create a P-N junction. In case of no electricity flow the electrons occupy the holes on the P type material creating a depletion zone. The depletion zone acts as an insulating layer in the diode. In case the electric current is passed through the diode, the electrons in the N type material get attracted towards the P type material leading to removal of depletion zone. When the electrons meet the protons energy is released in the form of photons, which emit light. The energy of the band-gap is represented by the energy of the photons. The colour of the light depends on the wavelength and the type of material used in the semiconductor. The change in supply of current affects the flux of luminosity proportionately. LED in general are operated using direct currents to avoid the variation in the intensity of luminosity. The mechanism used is the â€Å"Injection Electroluminescence† where Luminescence signifies photon production ; Electro suggests photon production using electric current and the Injection part deals with photon production using current carriers. In general, the conducting material used in LED are Aluminium-Gallium-Arsenide (AlGaAs), the colour of the light depends upon the type of material used as a semiconductor. Some of the other materials used in production of semiconductors a part of LED are Fig.1 –List of Semiconductor materials (LED, 2010) Organic Light Emitting diodes are also used where a thin film of organic material is coated over the semiconductors. LED is made of semiconductor materials which are responsible for the production of light of various colours. In case of a static diode, when no electric current is passed the P type and N type materials attract respective protons and electrons at the respective ends. A depletion zone is created

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Nowadays the children spent most of the time watching television than years ago, and therefore viewing more advertisements. The study conducted by Children’s National Institute found that children in America are spending more time watching television programs in a year than they are spending in school (Dumont, 2001). Within their website, the American Academy of Pediatrics says that advertising to children is deceptive and studies shown that children recall the ads on television whether it is an ad for a toy or food items. Children are even remembering the ads targeted towards their parents and also able to identify the alcohol and tobacco ads (Gardner, 2011). There exists a strong need to ban advertisements on television programs targeted for children under age 10 because the children are just like flowers having innocent and immature minds and they are not at a position to judge the benefits and harms associated with the products being advertised. Advertising is the art of a ttracting the human intelligence to get money from it. In the present scenario the great deal of adverting has been targeted towards children. As per the study of the Global issues organization, children are the most captive audiences for the United States marketers and an average child watches an estimate of nearly forty thousand television commercials per year (Gardner, 2011). Advertisement on TV targeted towards children can adversely affect their mental and physical health. The minds of children are very sensitive and they believe advertising claims they see on the TV. As the children under age 10 have immature minds the advertisers use special tactics to appeal to young viewers. The children also emulate the characters they see in the ads such as Barb... ...ernment says that advertising targeted to children is morally and ethically unacceptable, since children cannot distinguish the purpose of advertising. In Belgium, it is forbidden to telecast the ads during children’s programs as well as during the 5 minutes before and after them (Gardner,2011). Australia also banned advertisement during children programs. In addition to these the parents also had to educate the children the negative aspects of advertising and teach them the importance of healthy food habits. It is the responsibility of every parent to make their child aware of the negative effects of the media surrounding them and educate them. Will the marketing agents will completely stop targeting children remains a question of concern and the future of the children and their families remains ambiguous until there is a complete ban on advertisements.

Circle Of Trust

As I reminisce about the required readings of this week's lessons, I am reminded of the phrase â€Å"Circle of Trust†. The words are simple enough, but the meaning behind it is so profound. According to Palmer, the circle of trust is not just about familiar and comfortable relationships between family, friends and loved ones. The circle of trust is truly about the relationship that a person builds or creates within every space of their lives.Rather that space be your personal life, your cultural interactions or your vocational life. â€Å"A circle of trust can form wherever two or three are gathered-?as long as those two or here known how to create and protect a space for the soul† (Palmer, 2004). Palmers analysis of how important trust is to the soul, is mirrored with the beliefs of Dry. West, Boers, Chestier, and Villainies. In Dry. West's book, Race Matters, Dry. West speaks about the damaged and strained relationships between the black race and current society.He co ntends that if humanity is willing to find a common place in their hearts for acceptance (admitting of pain), for forgiveness ( afflicted of pain) and for progression (healing); a circle of trust can begin to shape. We have to recognize that there cannot be relationships unless there is commitment, unless there is loyalty, unless there is love, patience, persistence† (West, 1994). The idea of structuring a framework of mutual respect, compassion and acceptances of others personal differences; rather it be ethnicity, culture or ethics, can broaden and strengthen the circle of trust.Notwithstanding, in Dry. West's video Democracy Matters: Winning the Fight Against Imperialism, Dry. West continues to stress the value of nurturing the human spirit to be humble and democratic when interacting with all humanity. Dry. West goes on to say this is important because when all human beings are valued, we as a society will win. â€Å"The greatest intellectual, moral, political, and spirit ual resources in America that may renew the soul and preserve the future of American democracy reside in this multiracial, rich democratic heritage† (West, 2005).In Victor Villager's book, Burro Genius A Memoir, Villainies revealed how living as a Mexican American, the lack of empathy and compassion from society disrupted his inner truth and relationships with others. He goes on to say that once the people in his community, his world, and in his space where willing to embrace and expand their cultural awareness; his soul became alive. â€Å"The beginning of all wisdom is to understand that you don't know. To know is the enemy of all learning. To be sure is the enemy of wisdom† (2004).This notion of expanding ones inner circle and allowing the soul to trust the unknown; and the spirit to challenge the unfamiliar can be linked to Arthur Boers' book Living into Focus. In Living into Focus, Boers deems that as a society, we are living our lives in a state of distraction and comfort. As a society, we have become so distracted with technology, gadgets, and television, that we have lost focus Of the important things in life. We are now experts in comfortable and non-challenging state of affairs or relationships.This according to Boers, has caused us to lose focus on relationships, humanity, spiritual and inner growth. â€Å"When we allowing devices and machines to reside at the center of our lives, we displace values and practices that once enriched the quality of how we live. Which end up serving our gadgets instead of using them as tools to support our priorities. Technology itself becomes the center and purpose of how we live' (Boers, 2012). The study of these authors and their analysis on life, family and culture has allowed me to do some self-reflecting.I am reminded that the role of my family plays a tremendous part in my interactions and relationship with others. Come from a Christian background and my ethics and moral compass guides my actions. I have always made an honest effort to treat people the way that I would want people to treat me; and I often have people I work with say to me, wow, you are so nice. To me, being nice and genuine with people is part of my ethical framework. It is not something that I have to work at.It is something that has been instilled and demonstrated in my everyday life. My parents have and continue to be an example of what it means to have circles of trust in every area of life. Remember as a child, my parents would always say, â€Å"when you are in school, you are a reflection of us†. When I became older, they would say, where you go, you are a reflection of us†. That statement has always been the ethical orientation of life. It shaped my relationships with friends, co-workers, my students, my colleagues and strangers alike.I never wanted or want to disappoint my parents or my self, and so conduct my life accordingly. When I am engaging or interacting with my friends or with peo ple in general, my ethical foundation of having mutual respect for others is always on display. This also holds true when I interact with my students. I treat all of my students with respect and value. I make it my mission to teach my students how to treat others, how to interact with others and how to have respect for homeless.My circle of trust is always expanding, and the more add to my circle, the more fulfilled I become. Know can't and don't want to live in this huge world alone, so I try to bring as many people as can along with me for the ride. My dad always says, â€Å"you can't go to heaven all by yourself†, and while you are living, visit the elderly, give to the mother and fatherless, offer a kind word to the hopeless and let Christ be your reason†. I try to live everyday by this motto, and in doing so, I hope that the circle that I am creating is one that will never be broken.

The Article Unpacking The Invisible Backpack - 936 Words

In the article Unpacking the Invisible Backpack, McIntosh states â€Å"I think whites are carefully taught not to recognize white privilege, as males are taught not to recognize male privilege† I think that statement is true since people can become a part of situations related to privilege unintentionally and cannot help how they were born. I believe McIntosh explore of white privilege is all about and how power is established in the everyday life of all people in America. She says White privilege is stated to consist of an invisible weightless knapsack of useful goodies. A list of these goodies includes special provisions, maps, passports, codebooks, visas, clothes, tools and blank checks. I think her take on that would be the ability to go through society as a white person without having the disadvantages of another racial group such as African Americans however she questions on how she is going to use this advantage of having white privilege, will she use her white privile ge as a means of power to benefit only herself or will she change and transfer the way of how her power is different from others. Jensen also has some of the same questions as McIntosh, in the excerpt White Privilege Shapes the U.S. Jensen askes a student â€Å"if we live in a world of white privilege--unearned white privilege--how does that affect your notion of a level playing field† the student responds by saying it doesn’t really matter, acknowledging he has an unearned white privilege but ignoresShow MoreRelatedAnalysis Of White Privilege : Unpacking The Invisible Backpack1113 Words   |  5 Pagesâ€Å"White Privilege: Unpacking the Invisible Backpack† by Peggy McIntosh is about the dominant white race having societal advantages over the minority race. White privileges are known for having favorable advancements to white people and particularly men in that category. For those who receive benefits due to their origins of the white race refuse to acknowle dge the power they have over the minority race. Instead, whites see all races having the same opportunity to become successful. Due to their obliviousnessRead MoreWhite Privilege: Unpacking the Invisible Backpack786 Words   |  4 PagesWhite Privilege: Unpacking the Invisible Backpack Peggy McIntosh’s piece â€Å"White Privilege: Unpacking the Invisible Knapsack† describes the privileges white people gets without realizing their advantage over others. Peggy talks about racism being a part of everyday life even though we ignore it. Her main idea was to inform the readers that whites are taught to ignore the fact that they enjoy social privileges that people of color do not because we live in a society of white dominance. Her examplesRead MoreAnalysis Of White Privilege : Unpacking The Invisible Backpack949 Words   |  4 Pagesdifferent; however, the only way we could know what’s in a knapsack, you have to be willing to ask and look for your answers. Peggy McIntosh exploits this concept of a â€Å"knapsack†, as she pulls apart what’s in her own sack in her article, â€Å"White Privilege: Unpacking the Invisible Backpack.† Her concept is a way for us to understand what white privilege is and what it looks like. We must be willing to admit our privileges, before we can truly dig deep into what it is in the first place. Notably, white privilegeRead MoreMeritocracy Essay1000 Words   |  4 Pagespromoted meritocracy wholeheartedly in his article â€Å"Meritocracy: The Workplace Culture That Breeds Success† when he unequivocally supported meritocracy and said â€Å"It now refers to organizations where the best people and ideas win. It is no longer an idea that is mocked or ridiculed, but rather celebrated.† (Whitehurst 2014) However, meritocracy in America is still a myth and is not a certainty. 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In White Privilege: Unpacking the Invisible Backpack, Peggy McIntosh states that â€Å"whites are carefully taught not to recognize white privilege, as males are taught not to recognize male privilege.† However this is true in most situations in the film, we can see that Hilly Holbrook usesRead MoreFundamentals of Hrm263904 Words   |  1056 Pagesunderstands the strategy of the race. They must be able to quickly adjust the sails, rigging, and rudder to keep moving forward and somehow gain a competitive advantage. Some external factors such as the competition may be visible and predictable, but invisible factors such as the wind and waves may be unpredictable and require minor adjustments or a major change in strategy. When organizations face challenges such as an economy in recession, they depend on thoroughly trained professionals who react quicklyRead MoreStephen P. Robbins Timothy A. Judge (2011) Org anizational Behaviour 15th Edition New Jersey: Prentice Hall393164 Words   |  1573 PagesResearch: Dr. Judge’s primary research interests are in (1) personality, moods, and emotions; (2) job attitudes; (3) leadership and influence behaviors; and (4) careers (person–organization fit, career success). Dr. Judge has published more than 140 articles on these and other major topics in journals such as Journal of Organizational Behavior, Personnel Psychology, Academy of Management Journal, Journal of Applied Psychology, European Journal of Personality, and European Journal of Work and Organizational