Animal Use in Medical Research Essay Example | Topics and Well Written Essays - 2250 words

Animal Use in Medical Research - Essay Example However, the use of animals in medical research has long been a bitter debate. On one hand, use of animals is considered unethical for the benefit of the human. In contrast, if the use of animals is curbed altogether, it would lead to disruption of the understanding of health diseases, which would influence the newly developed medical treatments. This essay presents two different perspectives of medical researchers and ethics related to the use of animals on whether the animals should be used in the medical research or not. Finally, the essay ends with favoring the perspective which is most convincing. The perspective of Medical Researchers Use of animals in the medical research plays a vital role in the advancement of the medical sector. Since ages, man has been depending on animals for his survival. All over the world, people are leading a better quality of life due to the development of new medical treatments and medicines. This is made possible only by the research on animals. Me dical research includes acquirement of new knowledge and using animals for testing chemicals and compounds for ensuring safety and guarantee. According to them, no new medicine or drug can be introduced in the market or to the patients, until and unless it is tested on an animal. The new drug, medicine or treatment all over the world is confirmed effective on the basis of the tests done on animals. The techniques of transplantation of organ and open heart surgery are being supported by the surgery on animals.

Marijuana Should Not Be Outlawed Essay Example for Free

Marijuana Should Not Be Outlawed Essay Human laws are based on moral and ethical principles. This applies to almost all existing laws aside from the drug laws. Because of this aspect of the drug laws, much clamor is present as many groups are calling for the legalization of drugs like marijuana. Marijuana and other illegal drugs are not evil but it has gained a negative connotation because of numerous misinterpretations. The prohibition of drugs has also brought about negative effects instead of positive effects. In analysis, legalization may even prove to have more benefits. According to Benson Roe, the professor emeritus and chairman of the Cardiothoracic surgery at the University of California, there is no reason why marijuana, cocaine and heroine would be called poison as these substances have not been proven to have any ill effects on the health of a person. Roe narrated an incident when he was removing destroyed heart valves from a drug user and he got curious and consulted the San Francisco coroner to what extent do illegal drugs cause death. Roe was surprised to find out that the only causes of death coming from drugs come from the very rare cases of overdose and the use of infected intravenous injections. According to the coroner, â€Å"clean, reasonable dosages of heroin, cocaine and marijuana are pathologically harmless† (Roe). It is argued that marijuana causes psychological damage but the truth is no scientific evidence has traced mental illness or psychological damage to the use of marijuana. Marijuana users have been found to exhibit psychological distress after intake of the drug. However, it has been proven that these effects are temporary and will pass away after some time. It has also been argued that the harms brought about by marijuana have been scientifically proven but the Lancet, a British Medical Journal, concluded that based on 30 years worth of research, smoking marijuana is not harmful to health even if it is used in the long-term. Likewise, marijuana use has also been related to brain damage. This was thought to be proven in an earlier study when rhesus monkeys were exposed to marijuana smoke, however, a more reliable study wherein monkeys who were forced to inhale a significant amount of marijuana smoke manifested no brain damage. Anti-drug advocates also argue that marijuana has addictive properties even as evidence points to the direction that marijuana is not addictive. Less than one percent of marijuana smokers smoke marijuana on a daily basis. Majority of the people who smoke marijuana only smoke it occasionally. Some people who wish to stop smoking marijuana have no trouble breaking the habit. Even if a person experiences symptoms from marijuana withdrawal, these are usually mild symptoms (Drug Policy). There is also no reason to classify marijuana as illegal when other substances that have proven to be more addictive and harmful to the health, such as tobacco and alcohol, remain legal. In 2005, the number of deaths that has been associated with marijuana in England and in Wales only totals 19 while tobacco has been associated with 86,500 deaths and alcohol with 6,627 deaths. The number of deaths caused by alcohol and tobacco do not compare to the number of deaths caused by marijuana. Even other drugs which have more notoriety still fall short as heroine and morphine account for only 842 deaths, while cocaine (including crack cocaine) is associated with only 176 deaths (Transform). The use of drugs like marijuana does not affect other people aside from the person ingesting the drug. Technically, a person who uses drugs does not violate the rights of any other person. If a person under the influence of drugs violates the rights of another person or commits a crime, this is the time when he/she should be prosecuted by law. Alcohol remains legal even as drunk people commit heinous and even brutal crimes. The substance is not an excuse for committing a crime and drinking alcohol is not a crime in itself but when a person commits a crime under the influence of alcohol, this is when he/she is prosecuted. The same should apply for the use of drugs (Cussen Block, p. 532). Drugs are not evil per se but it has gained a negative image because of negative propaganda. The media always make use of the phrase â€Å"drug-related† in the presence of a drug in a crime even as the drug has not been indicated as a direct cause of the crime. Usually, the crime is not motivated by the drug. It is usually motivated by another external factor. The media has inadvertently played a role in giving drugs a negative image. This practice has been so common that no one even looks to identify if a crime really is related to drugs (Jackson). The anti-drug lobby also makes use of vague and emotive statements to persuade the people to support their cause (Russell). Even politicians make use of these statements and call for tougher drug laws simply to forward their political careers (Jackson). People interpret these vague and emotive statements differently and this may be identified as a basic element of a black propaganda. In a book entitled Hugs not Drugs: A Drug Abuse Prevention Manual published in the Philippines, the author starts by narrating a story of a studious young girl who got mixed with the wrong set of friends who influenced her to use marijuana. As a result, the young girl dropped out from school and had relationships with men that took advantage of her low self-esteem. After realizing what had happened to her, she decided to undergo rehabilitation. And after a tearful reunion with her parents, she vowed to stay away from drugs. This story is very common and immediately suggests that marijuana caused all the negative things failing to look at other factors which might have caused the girl to behave the way that she did. Additionally, the book indicated that drug use has been directly related with juvenile and even violent crime. However, the book does not cite where the information was taken or what study linked drugs with crime. The book also does not have a clear reference page evidencing that it is not a reliable source. Many critics of drug also make use of violent and obscene images in an attempt to prove that drugs are harmful. Drug prohibition results in too many expenses for the government as the drug laws leads to the incarceration of many non-violent offenders. In 2002, it is estimated that prohibition expenses amounted to $18. 22 billion indicating that â€Å"incarceration is an expensive policy option† (Taylor, Trace Stevens, p. 3-4). Prohibition is not good, in fact, it is even the greatest ally of the drug dealers as drugs are priced very high because they are illegal and not regulated (Jackson, 1998). Legalization will even benefit the general public. Marijuana has been related to crime rate by anti-drug groups but all unbiased studies have pointed to the direction that marijuana does not cause people to do criminal acts. The only crime that marijuana users commit is that they possess the drug (Drug Policy). Additionally, legalization will come with regulation which will eliminate the already minimal number of deaths as a result of drug use. Also, crime rate will decrease because drug prices will be regulated and people would no longer need to resort to crime to be able to buy the drugs. It will also be another source of income for the government as the drug trade will be taxed and the costs of prohibition would be avoided (Roe). No scientific evidence has proven that marijuana is harmful to the health and it also has not been identified as a cause of crime. Because of this information, there is no reason to outlaw marijuana. Legalizing marijuana may even be the better option as it will be a source of income for the government, all the while avoiding the high costs of prohibition. It will also reduce crime rate as well as prevent the incarceration of people that are merely caught possessing drugs. The negative image that drugs have gained is mainly because of negative propaganda.

Chistopher Reeves Essay -- essays research papers

What it means to be a Superman Born on September 25, 1952, native New Yorker Christopher Reeve has lead a life of stardom, coupled with a life of tragedy. Leading a very successful film career, Reeves was on top of the world, until the fifth day of May of nineteen ninety-five. On this day, Reeves life would change forever. However, no tragedy could stop a true Superman. Attending Princeton day academy Reeves was a success from the beginning. His natural talent and charisma made him a shoe-in for the lead in many school plays. Says Reeves "I never once asked my self, who am I, or what am I doing here...right from the beginning the theater was like a home to me." At the age of 16, Reeves already had an agent. While touring the country, Chris decided to pursue a college education. And, thanks to an understanding agent was able to continue his work as a professional actor. "Scheduling gigs around my classes." By nineteen-seventy-six he was starring with Katherine Hepurn on Broadway, and had become in such demand that he gave up his last year at Julliard. After screen testing for the nineteen seventy-eight movie Superman, he was given the lead role as Clark Kent/Superman. Reeve was an outstanding Superman both on and off the screen. He made Clark Kent/Superman a believable character, says Reeves "somebody you can take home and introduce to your parents". This part was just like Reeve, A d...

Michael E. Porters Five Forces In Pepsi :: Business Strategy

  Ã‚  Ã‚   Introduction The model of the Five Competitive Forces was developed by Michael E. Porter in his book "Competitive Strategy: Techniques for Analyzing Industries and Competitors" in 1980. Since that time it has become an important tool for analyzing an organizations industry structure in strategic processes.    Porters model is based on the insight that a corporate strategy should meet the opportunities and threats in the organizations external environment. Especially, competitive strategy should base on and understanding of industry structures and the way they change. Porter has identified five competitive forces that shape every industry and every market. These forces determine the intensity of competition and hence the profitability and attractiveness of an industry. The objective of corporate strategy should be to modify these competitive forces in a way that improves the position of the organization. Porters model supports analysis of the driving forces in an industry. Based on the information derived from the Five Forces Analysis, management can decide how to influence or to exploit particular characteristics of their industry.      Ã‚  Ã‚  Ã‚   The Five Competitive Forces The Five Competitive Forces are typically described as follows: 1  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚   Bargaining Power of Suppliers The term 'suppliers' comprises all sources for inputs that are needed in order to provide goods or services. Supplier bargaining power is likely to be high when:    ·Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚   The market is dominated by a few large suppliers rather than a fragmented source of supply,  ·Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚   There are no substitutes for the particular input,  ·Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚   The suppliers customers are fragmented, so their bargaining power is low,  ·Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚   The switching costs from one supplier to another are high,  ·Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚   There is the possibility of the supplier integrating forwards in order to obtain higher prices and margins. This threat is especially high when  ·Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚   The buying industry has a higher profitability than the supplying industry,  ·   Ã‚  Ã‚  Ã‚  Ã‚   Forward integration provides economies of scale for the supplier,  ·   Ã‚  Ã‚  Ã‚  Ã‚   The buying industry hinders the supplying industry in their development (e.g. reluctance to accept new releases of products),  ·Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚   The buying industry has low barriers to entry. In such situations, the buying industry often faces a high pressure on margins from their suppliers. The relationship to powerful suppliers can potentially reduce strategic options for the organization.   2  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚   Bargaining Power of Customers Similarly, the bargaining power of customers determines how much customers can impose pressure on margins and volumes. Customers bargaining power is likely to be high when  ·Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚   They buy large volumes, there is a concentration of buyers,  ·Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚   The supplying industry comprises a large number of small operators

Early Childhood Curriculum Essay

While being in this course I have learned about the different curriculums, philosophies and theories. In this paper I will be discussing how to develop an appropriate curriculum for preschool children. This paper will include the following topics: the theories and/or philosophies of Montessori; concepts learned throughout this course, how to apply them into an early childhood classroom focusing on the understanding components to design a curriculum for a preschool classroom based on ages 3 to 5 year old children. First let’s discuss the philosophies of  both Maria Montessori and Jean Piaget. Maria Montessori ideas and beliefs are embedded throughout every early childhood program and her influence on our thinking about curriculum has been profound. She was a tireless child advocate and believed that all children deserve a proper education. Montessori insisted that through proper early education, underprivileged and cognitively impaired children could be successful if they were given a chance to learn. She was one of the first to establish a preschool for poor and mentally retarded children in Rome; these preschools were called â€Å"Casa  dei Bambini†, which translated in English as â€Å"Children’s House. † Dr. Montessori proposed that children that are at risk and the notion that society had a moral responsibility to devote resources to early child intervention. Our textbook states that. â€Å"Montessori embraced and expanded Froebel’s kindergarten concept; she felt that children were natural learners and should drive much of their own learning. She asserted that children should be grouped in multiage (2 ? to 5 years) classes to allow flexibility and opportunities for peer mentoring. Montessori developed an  extensive set of â€Å"didactic† materials and lessons designed to be attractive to children and used by teachers to teach specific concepts and skills. She adapted furniture to child size as a gesture of respect for the unique needs of early learners† (Jaruszewicz, 2012). I agree with her philosophy and theory, because children do need the freedom to learn at their own pace and not to be pressured to do what they see other children do. It is also important the classroom learning environment to be attractive so that it will draw the children to be there and learn new and exciting things. In order to use the teaching method, the teachers must be trained to work with all children and understand that no one child develops the same as another. The other philosopher that I will discuss is Jean Piaget. A contemporary of both Montessori and Dewey, Swiss psychologist Jean Piaget proposed a theory of cognitive development that initiated a constructivist view of curriculum (Jaruszewicz, 2012). Piaget conducted several experiments with young children that proved that their mental concepts are learned through trial and error experiences. Young children will continue to do  things that they have been told not to do, until the consequence of their actions has been reached. For example, when a parent tells their child not to stack the building blocks up too high or they will fall on them which could lead to them being hurt; the child continues to do that the same thing over and over again to see if what their parent said is true. Once the child has seen the building blocks fall over on them is when they have learned that they don’t need to do that. His work confirmed early learning as distinct from other developmental periods, implying, therefore,  that materials and activities for young children should reflect the idiosyncratic way in which they think and process stimuli (Jaruszewicz, 2012). Piaget proposed that cognitive development occurs in four different stages, three of which occur during early childhood. In the sensorimotor stage, infants and toddlers process experience and begin to coordinate movement through sensory exploration. Preoperational thinking of preschoolers emerges spontaneously, as they are internally motivated to make sense of their environment by testing ideas and theories in play and  exploration with materials (Jaruszewicz, 2012). Piaget and Montessori are the main philosophies that stood out to me in this course the most. Next I will discuss the Core knowledge preschool sequence curriculum and the areas inside it. With strong focus on challenging, but appropriate content, the Core Knowledge Preschool Sequence and Teacher Handbook is unique among early childhood programs. It outlines a cumulative and coherent progression of knowledge and skills in all developmental areas and integrates developmentally appropriate practices for both content and instruction. Using the core knowledge curriculum helps with creating appropriate activities that prepare the preschool age children to learn. Children are always ready to learn; as long as the teacher understands that, each child will be eager to learn in new and exciting ways. It is important for teachers to make sure that the information that they wish to teach the children in the classroom is appropriate and fun. The Core Knowledge Preschool Sequence Curriculum focuses on five different areas: Social Skills, Early Literacy skills in reading and writing, Mathematics, Science and Visual Arts. It is important for children to learn how to interact with other children their age early in their lives to develop their social skills. One of the many things I love about Montessori is that Montessori teachers see the ‘whole’ child-developmentally, academically, socially, emotionally, and physically. There is a myth out there that says simply placing children in the same room and having them do activities helps them develop social skills. I disagree. Developing social skills needs to be a value in the classroom as well as modeled by the teachers/adults who are around  the children. Using manners, demonstrating what Montessori called ‘Grace and Courtesy’ and always being respectful of the child are key ingredients to helping a child develop social skills. There are several ways to help expand children’s social skills. The activity that would be used to develop social skills would be to have the children sit in a circle on the floor, pass an object around each child to take turns telling the class something about them. Whether it is there name, favorite color, parents name, how many sibling they may have, etc. When are playing together in  the classroom they learn to take turns, shared things and playing with others in general helps them develop social skills. The development of language in early childhood classrooms is an umbrella for the Montessori curriculum. The teachers and parents consider activities on the shelves of the Language area as the heart of actual language learning. The techniques used in a Montessori classroom are different when it comes to teaching language and literacy. Teachers, parents, and administrators need to recognize communication as the foundation for the meaningful  development of language concepts and skills. Effective communication depends on authentic relationships between communicative partners. Teachers have the responsibility (actually, the opportunity) to develop and expand learning relationships with young children. This is truly the ultimate opportunity to make a difference. Seen in this light, conversations with young children on the playground, during field trips, on the way to the bathroom, in the midst of conflict resolution, during lessons, and countless other times create the context for the development of language skills. Relationships of trust are built between children and teachers and among peers. Classroom work further contributes to language concept and skill development within this context of meaningful communication. It is important to talk children especially infants constantly, so they can develop a strong sense of vocabulary. Children catch on to everything that they may hear. So it is definitely important to be cautious what language you use around children. Printed materials and images are strongly important in an early childhood classroom. These materials make the classroom attractive to  children as well as make them want to learn about what those images and books mean. Phonemic awareness is part of a balanced literacy program, and can be developed in several ways during shared reading and shared writing. Shared reading and shared writing typically occur during the language arts time block, but may also occur during content-area learning. On to my favorite subject any grade level or age is mathematics. In an early childhood classroom, teaching young children mathematics somewhat easy and in some cases not so much. Getting children ages three to four year olds to learn their numbers and one to one  correspondence can be a challenge, but it requires patience to teach the children the meaning of number awareness. Provide children with authentic, hands-on learning experiences-DO NOT USE WORKSHEETS. In preschool you should play to the children’s natural curiosities and look to your student’s interest to guide lesson planning. You are setting up children for a lifetime of learning and you should create excitement around what you. Also, the more hands on the activity is, the more learning styles you are engaging, and the more the child enjoys it the more they will  learn and retain! Create activities that children are actively involved in learning something new, such as how to count and recognize numbers. Numbers are not the only thing that children can learn that is related to mathematics. Shapes are how to perceive and recognize them are important as well. Teaching children about shapes and how many sides each one has involves numbers as well. Mathematics and Language go together because you are using vocabulary words to decide the shapes, numbers, etc. In conclusion, this paper touched on some important factors to help develop a  developmentally appropriate curriculum for preschool/pre-K age children. It is important to provide activities for young children and make sure the environment is a positive, warm and inviting one that children will want to come to school and learn new things. In this paper I discussed the standards for each core knowledge area to develop an appropriate curriculum for young children. References Jaruszewicz, C. (2012). Curriculum and Methods for Early Childhood Educators. In C. Jaruszewicz, Curriculum and Methods for Early Childhood Educators. San Diego: Bridgepoint Education.

Lean Operations Design Homework

Lean Operations Design Homework Introduction Lean operation refers to practices that are aimed at achieving manufacturing processes with minimum waste. This paper seeks to discuss aspects of manufacturing processes. The paper will explore definitions of terms that are used in manufacturing processes. It will also explain lean wastes in a manufacturing set up.Advertising We will write a custom assessment sample on Lean Operations Design Homework specifically for you for only $16.05 $11/page Learn More Definitions Cycle time Cycle time is the duration of time needed to complete a production process. Raw materials are processed into finished products within the period. Cycle time begins when production process starts with raw materials until the time when the necessary production activities are completed (Curry and Feldman, 2010). Throughput Throughput is the measure of the rate of production of a process. It measures the quantity of raw materials that are utilized in a production process per unit duration of time. Denis and Shock define throughput as the mean rate of outcome from a process (Denis and Shock, 2007). Throughput time Throughput time is a total time that is taken to complete a production process. The period begins from the first step of a production process up to the process’ last step. Throughput time in a manufacturing industry is, for instance, defined as the duration of time that starts at the beginning of a production process until the time that the desired finished product is obtained (Reijers, 2003). Work in progress Work in progress refers to the value of raw materials that have been put in a production process but have not yet been completed. Example of work in progress in a manufacturing industry is the set of materials that are meant to be used in the production of commodities, but which are still under the manufacturing process (Dudbridge, 2011). Job shop A job shop is a production facility or a set of machines, which can only execute one activity at a time, but can be reused after every single operation. It defines a collection of facilities which functionalities are renewable (Lee and Choi, 2010). Possible seven lean wastes in Kentucky Fried Chicken domain The main aim of lean production processes is to minimize wastes that could be incurred during production processes. Possible lean wastes in a manufacturing industry include â€Å"overproduction, inventory, transport, processing, idle time, operation motion, and bad quality† (Dudbridge, 2011, n.p.).Advertising Looking for assessment on business economics? Let's see if we can help you! Get your first paper with 15% OFF Learn More Overproduction, which is defined as excess output of finished products, is a waste because it induces turbulence in a supply chain’s production flow. Further, overproduction means that resources that could have been used in other activities are tied up in stock that is not immediately useful to an or ganization. Transportation, which is defined as the process of moving inventory from one location to another, is also a waste because it causes expenditure, but does not add value to the production process. Operator motion, a process that involves movement of personnel from one manufacturing location to another, in cases where processes are executed at different locations, is also a significant waste. This is because the time and resources that are used in operator motions could be utilized in adding value to the production process (Dudbridge, 2011). Inventory, which is a derivative of overproduction, is another waste in production processes. Like overproduction, inventory holds up resources and disrupts flow of production processes. While bad quality leads to poor sales, costly processing methods reduce availability of resources and idle time delays production processes (Dudbridge, 2011). One of the possible lean wastes that Kentucky could face is overproduction. This could lead to held up resources and losses due to expired stock. The organization can avoid the waste through market research on demand trends. Transportation of resources such as raw materials is another possible waste for the company. This can be avoided by establishing the company’s own poultry firm within or around its premises. Large inventory due to over production can also be avoided by monitoring market trends together with application of sales promotions. Idle time and poor quality are other wastes that the company could face and can be avoided by ensuring proper operations management (Dudbridge, 2011). References Curry, G., and Feldman, R. (2010). Manufacturing Systems Modeling and Analysis. New York, NY: SpringerAdvertising We will write a custom assessment sample on Lean Operations Design Homework specifically for you for only $16.05 $11/page Learn More Denis, P., and Shock, J. (2007). Lean production simplified: a plain language guide to the worlds m ost powerful production system. New York, NY: Productivity Press Dudbridge, M. (2011). Handbook of Lean Manufacturing in the Food Industry. Oxford, UK: John Wiley Sons Lee, S., and Choi, B. (2010). Frontiers of Assembly and Manufacturing: Selected Papers from ISAM09. Barcelona, Spain: Springer Reijers, H. (2003). Design and control of workflow processes: business process management for the service industry. New York, NY: Springer

Free Essays on Superconductivity

Superconductivity INTRODUCTION We've all heard about superconductivity. But, do we all know what it is? How it works and what are its uses? To start talking about superconductivity, we must try to understand the how "normal" conductivity works. This will make it much easier to understand how the "super" part functions. In the following paragraphs, I will explain how superconductivity works, some of the current problems and some examples of its uses. CONDUCTIVITY Conductivity is the ability of a substance to carry electricity. Some substances like copper, aluminium, silver and gold do it very well. They are called conductors. Others conduct electricity partially and they are called semi-conductors. The concept of electric transmission is very simple to understand. The wire that conducts the electric current is made of atoms which have equal numbers of protons and electrons making the atoms electrically neutral. If this balance is disturbed by gain or loss of electrons, the atoms will become electrically charged and are called ions. Electrons occupy energy states. Each level requires a certain amount of energy. For an electron to move to a higher level, it will require the right amount of energy. Electrons can move between different levels and between different materials but to do that, they require the right amount of energy and an "empty" slot in the band they enter. The metallic conductors have a lot of these slots and this is where the free electrons will head when voltage (energy) is applied. A simpler way to look at this is to think of atoms aligned in a straight line (wire). if we add an electron to the first atom of the line, that atom would have an excess of electrons so it releases an other electron which will go to the second atom and the process repeats again and again until an electron pops out from the end of the wire. We can then say that conduction of an electrical current is simp... Free Essays on Superconductivity Free Essays on Superconductivity Superconductivity INTRODUCTION We've all heard about superconductivity. But, do we all know what it is? How it works and what are its uses? To start talking about superconductivity, we must try to understand the how "normal" conductivity works. This will make it much easier to understand how the "super" part functions. In the following paragraphs, I will explain how superconductivity works, some of the current problems and some examples of its uses. CONDUCTIVITY Conductivity is the ability of a substance to carry electricity. Some substances like copper, aluminium, silver and gold do it very well. They are called conductors. Others conduct electricity partially and they are called semi-conductors. The concept of electric transmission is very simple to understand. The wire that conducts the electric current is made of atoms which have equal numbers of protons and electrons making the atoms electrically neutral. If this balance is disturbed by gain or loss of electrons, the atoms will become electrically charged and are called ions. Electrons occupy energy states. Each level requires a certain amount of energy. For an electron to move to a higher level, it will require the right amount of energy. Electrons can move between different levels and between different materials but to do that, they require the right amount of energy and an "empty" slot in the band they enter. The metallic conductors have a lot of these slots and this is where the free electrons will head when voltage (energy) is applied. A simpler way to look at this is to think of atoms aligned in a straight line (wire). if we add an electron to the first atom of the line, that atom would have an excess of electrons so it releases an other electron which will go to the second atom and the process repeats again and again until an electron pops out from the end of the wire. We can then say that conduction of an electrical current is simp...