History of Electromagnetism

History of Electromagnetism Electromagnetism  is an area of  physics  which involves the study of the  electromagnetic force, a type of physical interaction that occurs between  electrically charged  particles. The electromagnetic force usually produces  electromagnetic fields, such as  electric fields,  magnetic fields  and  light. The electromagnetic force is one of the four  fundamental interactions  (commonly called forces) in  nature. The other three fundamental interactions are the  strong interaction, the  weak interaction  and  gravitation. Until 1820, the only magnetism known was that of iron magnets and of lodestones, natural magnets of iron-rich ore. It was believed that the inside of the Earth was magnetized in the same fashion, and scientists were greatly puzzled when they found that the direction of the compass needle at any place slowly shifted, decade by decade, suggesting a slow variation of the Earths magnetic field. Edmond Halleys Theories How can an iron magnet produce such changes? Edmond Halley  (of comet fame) ingeniously proposed that the Earth contained a number of spherical shells, one inside the other, each magnetized differently, each slowly rotating in relation to the others. Hans Christian Oersted: Electromagnetism Experiments Hans Christian Oersted was a professor of science at Copenhagen University. In 1820 he arranged in his home a science demonstration to friends and students. He planned to demonstrate the heating of a wire by an electric current, and also to carry out demonstrations of magnetism, for which he provided a compass needle mounted on a wooden stand. While performing his electric demonstration, Oersted noted to his surprise that every time the electric current was switched on, the compass needle moved. He kept quiet and finished the demonstrations, but in the months that followed worked hard trying to make sense out of the new phenomenon. However, Oersted could not explain why. The needle was neither attracted to the wire nor repelled from it. Instead, it tended to stand at right angles. In the end, he published his findings without any explanation. Andre Marie Ampere and Electromagnetism Andre Marie Ampere in France felt that if a current in a wire exerted a magnetic force on a compass needle, two such wires also should interact magnetically. In a series of ingenious experiments, Andre Marie Ampere showed that this interaction was simple and fundamental: parallel (straight) currents attract, anti-parallel currents repel. The force between two long straight parallel currents was inversely proportional to the distance between them and proportional to the intensity of the current flowing in each. There thus existed two kinds of forces associated with electricity- electric and magnetic. In 1864, James Clerk Maxwell demonstrated a subtle connection between the two types of force, unexpectedly involving the velocity of light. From this connection sprang the idea that light was an electric phenomenon, the discovery of radio waves, the theory of relativity and a great deal of present-day physics.

Family Relations and Dynamics Assignment Example | Topics and Well Written Essays - 2500 words

Family Relations and Dynamics - Assignment Example Family Relations and Dynamics There are various issues that have been characteristic of families especially when a critical analysis and evaluation lacks, these includes, domestic violence, child abuse, teen violence, suicide, aging, depression, divorce, and separation among others. Theses aspects have profound implications on the well-being of the family if proper management is deficient. In contrary, there are families that are characterized by peace, well being, mutual understanding, unity and being development minded among others. The foundation of such, in most cases is a key player in the way growth and development happens. There are four major aspects of critical thinking that makes a family develop the above-mentioned positive traits; these elements are sound reasoning, rationality, logic and constructive arguments. Research has pointed out various advantages of critical thinking in a family setup that drives a healthy family, contrary to which unethical and morally unacceptable happenings and mindsets ta kes toll. Various authors have put across their arguments and counterarguments concerning family relationships and dynamics. This paper will focus on some of the thoughts presented by various scholars, commentators, writers and analysts while providing a critical view of the arguments presented. The acquisition of this knowledge is very beneficial to every body since we are all part of a family; it is paramount that we understand the dynamics therein and have a defined action plan. A critical thinker is a uniting factor, promoter of the social as well as the economic well being of a family. Teens are part of the family; they are very explorative and are very much under the influence of the adolescent stage of growth. The ability to master the dynamics that accompanies this stage can help in facilitating growth of healthy teens that have a positive perception of life. In addition, they are able to overcome some of the pressures that come with the stage. According to Francine Kiefer a nd Neil Erwin of ‘The Christian Science Monitor’, taming adolescence in order to prevent related incidences such violence requires diverse interventions. They advocate for customized efforts that range from simplistic means such as giving rewards for good acts and the complement of good acts by demonstrating appreciation through a word of mouth. In addition, psychological counseling programs can be embraced especially for behaviors that are getting to be exposed publicly. The family is the ore unit that should look into this aspect; however, the community too has its input. Friends shape one’s behavior while the teachers also should embrace the same aspects to make the teens develop to overcome adolescence. The conclusive remarks that were made by David Osher, a researcher with the American Institutes for Research, depicts that there is a possibility of a complete transformation in teenagers if proper preventive measures are implemented. The two authors suggest t hat the convectional means of having to frisk students so that they are seen to be unarmed was an aspect that encouraged violence the more. A more close home approach that does not require much effort is the introduction of ‘red stickers’, communication tools that warn that doing something has certain consequences. To complement this strategy, the teenagers are allowed around twenty minutes in a day to learn social skills. It is reported that the best

Research Essay Example | Topics and Well Written Essays - 2500 words

Research - Essay Example ............8 6 Methodology....................................................9 7 Analysis...........................................................10 8 References.......................................................12 1. Introduction The main aim of this research is to provide important marketing data to the client which is a company seeking to introduce a new range of ready to eat nutritious meals for fixed budget customers. The client company is planning to launch nutritious food products in United Kingdom market with the students as the main target customer of the product. This nutritious food product features a variety of read to serve meals at an affordable price. Beaver’s Corn Flakes are targeted towards the student population of UK and it is a substituent for the junk food preferred because of low cost. The client is planning to conduct a research for understanding the eating habits of the specific target consumers of their product. On behalf of the client, a resea rch agency is employed to carry out all the necessary research. There are various approaches followed by the marketing company to test the launch methods that have to be adopted for launching the product in UK market. This research will help the client company in understanding the real market conditions and help them in designing an effective strategy for the launch of product. This report is prepared with the purpose of highlighting the methods that are used in research process and the importance of every single method with relevant output for the client. There will be detailed explanation for the research methods used and reason behind using those particular methods for the research. 2. Research Objectives This main purpose of this research is to understand the UK market and the food habits of the potential customers. The research is divided into different stages including consumer research, expert advice from nutrition and diet experts in UK and conducting online research campaig n for the product. The research agency will focus in finding the right methods for promoting Beaver’s Corn Flakes and getting the feedback from the targeted audience. The main objective of conducting this research is to provide important insights of the research and useful data to the client that will guide in marketing and production strategies of the company. One of the most important parts of the research is consumer participation and the inputs from direct targeted customers. The feedback from customers will be taken in form of short surveys and the satisfaction level of the customer from Beaver’s corn flakes and other range of products. It will allow the client to understand the customer’s perspective towards the product and estimate of number of customers that are willing to use this product. Some of the important results obtained from research are: a) Customer awareness of Beaver’s corn flakes product (Including data like age, socio-economic status , sex and location of customer) b) What are the possible challenges in introducing Beaver’s corn flakes and food products in UK market? c) What is the customer satisfaction level and feedback for Beaver’s Corn Flakes? d) What percentage of UK customers are willing to try this new range of nutritious food products from Kellogg’s? 3. Terms of Reference The main aim of the research is to provide information to the client that will help the company in developing a consumer base in UK market for their upcoming nutritious range of food products served as

Levothyroxine: The Importance of RDH Familiarity

Levothyroxine: The Importance of RDH Familiarity Jessica Jarrard As a registered dental hygienist, there are health concerns to remain aware of when providing care to clients, specifically health conditions that the client may or may not be aware of, and more importantly any medications that may affect dental care in general as well as in the office. As a RDH, one should be able to recognize signs and symptoms and be knowledgeable about how the care being provided to the client may be affected by medication and the health conditions associated with its use as it relates to dental health. The top medication prescribed to individuals is Levothyroxine. The use of this medication is common, and it is important for the RDH to be aware of the conditions associated with its use, the effects this medication may have on the care provided or vice versa, as well as how to direct the client for providing aftercare once they have the left the office. Any possible health concerns the RDH may recognize in regards to the use of Levothyroxine are especially import ant if the client has signs of a possible condition that may be associated with its use or if the client may be suffering an adverse effect resulting from a medication interaction that the client may be unaware of. Being familiar with the medication as it relates to the care provided will help the RDH recognize if referring the client to seek further care from their primary medical provider is necessary. Levothyroxine is a synthetic hormone medication used for the treatment of hypothyroidism, a condition associated with underproduction of hormones secreted within the thyroid gland. Thyroxine, the T4 hormone, is indirectly responsible for regulating many metabolic processes within the body and when deficient or absent can cause a number of health concerns including lethargy, low body temperature, myxedema, intolerance to cold, and weight gain among other, more serious complications (Weinberg, Westphal, Fine, 2008). Although Levothyroxine can regulate the symptoms associated with this health condition, there are also risks involved with long term use of the drug such as cardiovascular disease, stroke, and atrial fibrillation, especially among individuals with thyroid cancer (Nelson, 2017). Therapeutically this medication is utilized as a replacement hormone in the absence of Thyroxine (Vallerand, Sanoski, Deglin, 2013). Although there are other treatments available for hypothyroidism , there is no evidence they are better options, and Levothyroxine remains a common treatment and has been proven to work well (What is T4, n.d.). Levothyroxine C15H11I4NO4 is commonly known as Synthroid but is also known by other names such as Eltroxin or Euthyrox in Canada and Levo-T, Levothroid, Levoxyl, T4, Tirosint, and Unithroid depending on the manufacturer marketing the drug (Hopkins, 2006). Although most commonly used to treat hypothyroidism it is also used as a treatment for suppression of euthyroid goiter as well as thyroid cancer which is often directly related (Vallerand, Sanoski, Deglin, 2013, p. 779). Levothyroxine is absorbed through the GI tract and metabolized by the liver and other body tissues by being converted to Triiodothyronine, the T3 hormone, which regulates metabolism in the body as well as other body functions (What is T4 , n.d.). Levothyroxine can be taken intravenously and intramuscularly, although it is commonly prescribed as a single dose, oral medication. Dosages of this medication are determined by many factors including age, weight, severity of the condition being treated, and other present health conditions. As with all medications, individuals with certain health conditions should use caution while taking Levothyroxine. These include individuals suffering from cardiovascular disease, renal insufficiency, and uncorrected adrenocortical disorders as well as pediatric and geriatric patients who should be monitored especially close as they are more vulnerable to complications or risks associated with any medication or illness (Vallerand, Sanoski, Deglin, 2013). Dosages are increased at regular intervals, usually bi weekly and should be taken in the morning, as the risk for insomnia is increased with its use. It is important that this medication is taken at the same time daily and should not be stopped wi thout consulting the prescribing physician, as it may result in negative health consequences (Vallerand, Sanoski, Deglin,2013). When taking this medication, it is important that patients understand that treatment with Levothyroxine is not a cure for hypothyroidism and should be considered a lifelong therapy. Patients should also understand that it may have an effect on other body systems, resulting in undesirable symptoms such as headache, insomnia, irritability, angina pectoris, arrhythmias, tachycardia, abdominal cramps, diarrhea, vomiting, sweating, hyperthyroidism, menstrual irregularities, heat intolerance, weight loss, and accelerated bone maturation in children. These adverse effects are usually only seen when excessive doses of the medication cause iatrogenic hyperthyroidism (Vallerand, Sanoski, Deglin, 2013, p. 780). Some other medications have been known to interact in conjunction with Levothyroxine and should not be taken together unless directed by a physician. These medications include Warfarin, some diabetic medications, and Estrogen, which may increase the effects of Levothyroxine. Other supplements or foods which contain calcium, iron, and zinc prevent absorption of Levothyroxine and should also not be taken in conjunction. If these medications or supplements are needed, it is best to do so under the care of a physician who can monitor any potential risks or effects and make adjustments in health care accordingly (Vallerand, Sanoski, Deglin, 2013). The use of Levothyroxine is increasingly common in individuals and can cause undesirable effects if not considered when providing dental care as well as any other care to clients. For instance, a common side effect of this medication is xerostomia. This side effect can cause a number of risks to clients as the mouths essential, protective enzymes, which are provided and carried through saliva, are depleted or completely absent. Without this level of protection, the teeth and gums become weak and vulnerable to excessive damage from routine dental care as well as other normal activities, such as eating. It has been reported that there is almost four times greater prevalence of xerostomia in patients taking medications (28%), compared with those not taking any (7.5%) (Risk factors, hyposalivation, 2017). If the RDH is aware of this side effect, whether or not it is a result of the medication, adjustments in dental care can be made preventing further damage. The RDH can also provide repl acement therapy for the missing enzymes by offering products or medications that supplement these enzymes to prevent further dry mouth. All RDH should be educated and aware of the signs and symptoms of disorders or health conditions associated with Levothyroxine and the possible risks involved when providing dental care for a client taking this medication. Understanding how the medication works and the effects it has in conjunction with other medications, supplements, or medical/dental treatments will not only serve to protect the client from any further risks or complications regarding care, but will also allow the RDH to perform client services more effectively and with greater success to the clients well-being. References Flaitz, C., Shlafer, M., Tornwall, R., Viola, T. (2014). Mosby Dental Drug Reference 11th ed. St. Louis, MO: Elsevier Mosby. Haveles, E. (2011). Applied Pharmacology for the Dental Hygienist. Maryland Heights, MO: Mosby Elsevier. Joe (MSC Nutrition). (n.d.).What is T4 and T3: The complete guide. Retrieved from https://www.dietvsdisease.org/t4-t3-thyroid-hormone levels/?hilite=%22levothyroxin%22 Nelson, R. (2017). High risk for CHD and stroke in patients with thyroid cancer. Retrieved from www.medscape.com/viewarticle/875375 Niklander, S., Veas, L., Barrera, C., Fuentes, F., Chiappini, G., Marshall, M. (2017). Risk factors, hyposalivation and impact of xerostomia on oral health-related quality of life. Pub Med, 31. Retrieved from http://www.scielo.br/scielo.php?script=sci_arttextpid=S180683242017000100211lng =ennrm=isotlng=en#B12 Vallerand, A., Sanoski, C., Deglin, J. (2013). Daviss Drug Guide for Nurses 13th ed. Philadelphia, PA: F.A. Davis Company. Weinberg, M., Westphal, C., Fine, J. (2008). Oral Pharmacology for the Dental Hygienist. Upper Saddle River, NJ: Pearson Education Inc.

Jairo Morales Homwork

Lu is the person who handles looks after loan applications. 5 Mailman has announced that it will be intro icing _bringing out a new online payment system in the fall. 6 Can you check _ look up the bank reference code in the directory? 7 The government has decided to advance bring forward the date for submitting tax returns. 8 The bank has refused _turned down my application for a loan. 9 The exact conditions are explained set out in detail in the contract. 10 You need to provide proof of identify before you an open _set up an account.C Choose two of the verbs from the list below. How many phrasal verbs can you make by combining them with the prepositions or adverbs from box 2? Check come cut fall get go look make pay put run settle Check out/ up fall down/ out Grammar Check 2 A The modals can, could, might, may, should, will, and shall are used to express different degrees of likelihood. Look at their use in the sentences below. In which of the three categories (a, b, or c) would you include them? A Possible b Impossible c Certain Customers can't withdraw more than $300 a day in cash. B 2 It can take at least a month before a home loan is approved. _a 3 The insurance company will charge you for the whole year even if you don't deice to cancel after the first month. _ c 4 To cash a check for more than $200, clients may be asked to provide ID. _a 5 It could be difficult to get your associates to agree to those conditions. A _ 6 We shall need written confirmation Of the transfer request. _c 7 You might find it more convenient to do your banking by phone. A_ 8 The bank won't cover overdrafts beyond the specified limit. C B Read the sentences and choose the correct answer (a or b). 1 It b take longer than two days to process your applications. A couldn't B shouldn't lend you an additional $ 1000 if you maintain your credit record. A can B won't 3 They've promised that all the paperwork a _ be ready before next week. A will B may 4 It be better to ask if you can repa y the money in installments. A might shall 5 I'm afraid that we _ a accept payment in cash. A can't B mightn't 6 The local bank closes at six so B should Conclusion: be able to get there in time.A can Being weak in grammar poses a great challenge to ourselves, especially while writing and speaking. This often becomes a major problem. Nowadays most communication is through writing, be it courtesy mails, proposals, invoices, quotations, or invites. People who are into advancing their careers, their businesses, and those on the lookout for personal enrichment have no choice but to polish their grammar, especially the tenses. This will ensure the communication gets understood correctly and avoid misunderstandings.

The Dangers of Facebook

They found that 65% of Facebook users accessed their account daily, usually checking it several times to see if they had received new messages. The amount of time spent on Facebook at each log-in varied from just a few minutes to more than an hour. The Ohio report shows that students who used Facebook had a â€Å"significantly† lower grade point average – the marking system used in US universities – than those who did not use the site. â€Å"It is the equivalent of the difference between getting an A and a B,† said Karpinski, who will present her findings this week to the annual meeting of the American Educational Research Association.She has not yet analysed whether a student’s grades continue to deteriorate the longer he or she spends on Facebook. Some UK students have already spotted the potential danger. Daisy Jones, 21, an undergraduate in her final year at Loughborough University, realised the time she was spending on Facebook was threatening her grades – prompting her to deactivate her account. â€Å"I was in the library trying to write a 2,000-word essay when I realised my Facebook habit had got out of hand,† she said. â€Å"I couldn’t resist going online.You do that, then someone’s photo catches your eye. Before you know it, a couple of minutes has turned into a couple of hours and you haven’t written a thing. † Jones is among the few to have recognised the risks. According to Karpinski’s research, 79% of Facebook-using students believed the time they spent on the site had no impact on their work. Facebook said: â€Å"There is also academic research that shows the benefits of services like Facebook. It’s in the hands of students, in consultation with their parents, to decide how to spend their time. †

Nuclear Power and Its Problems - Free Essay Example

Sample details Pages: 2 Words: 508 Downloads: 8 Date added: 2019/08/16 Category Energy Industry Essay Level High school Tags: Nuclear Power Essay Did you like this example? Nuclear power occurs from a series of reactions that causes the build-up and release of energy which in turn generates heat. This heat is then used as steam to power turbines which helps produce the electricity. The production of this electricity is used to power many things including but not limited to homes, schools, business etc. (What Is Nuclear Power And Energy? | GE Hitachi Nuclear Energy) Nuclear power is considered safe when compared with some other energy sources such as solar, wind, hydropower and fossil fuels like coal, oil and natural gas. However, some issues do exist when producing the nuclear power. One of the issues with nuclear power is controlling the rate of the reactions during the production of nuclear power/energy. If the reaction becomes unmanageable and the reaction cant be contained this can lead to a meltdown causing high levels of radio-active fall out. Such an example of this occurred in Chernobyl 1986 – the reactor exploded due to loss of electricity, Three Mile Island – March 28 1979 – the water supply in the circuit malfunctioned causing the circuit to overheat due to the lack of the electricity, Fukushima Daiichi March 2011 – An earthquake caused the nuclear plant to shut down because of no electricity, the reactors over heated causing a disaster,   to mention a few (A Brief History Of Nuclear Accidents Worldwide) . Don’t waste time! Our writers will create an original "Nuclear Power and Its Problems" essay for you Create order Another example of the possible problems that can arise from nuclear power is the disposal of the waste products from the reactions. Once the waste material is produced they are radio-active and can stay radioactive at very high levels for many years. This could potentially cause a huge concern, as if this radio-active waste gets into the wrong hands, the waste can be used in nuclear weapons. (Nuclear Reprocessing: Dangerous, Dirty, And Expensive) Although the above-mentioned situations have occurred with nuclear power, the United States of America benefits from the use of nuclear power, without it there would be no electricity. The USA produces more nuclear power that any other country, producing more than 30% of nuclear generation of electricity. Since the production of electricity from the nuclear power plant is continuous, this saves the USA money for example, on the cost of other fuels such as petrol.   Another reason it is beneficial to the USA is that it reduces the cost of coal and oil as the nuclear power can be used as an alternative source. Cars can now be run on electricity instead of fuel, a cleaner and safer alternative to fuel (Nuclear Power In The USA World Nuclear Association) Although, Nuclear power has its problems, where would our country and the world be without it. Think about not having electricity in your home, you cant watch TV, use the computer, cook, keep your home warm in the winter and cool in the summer, the list is endless. This is why nuclear power is a necessity. With all the safety protocols put in place during the production of nuclear power, it is clean, safe and necessary for the United States and the rest of the World.