Quantum Phenomena Essay Example for Free

Quantum Phenomena Essay Quantum theory (including subfields such as quantum mechanics and quantum electro and thermo dynamics) is at least to say, is a relatively new field of physics, having been born just over a century ago. It can be described as one of the most powerful theory ever to be proposed in the history of physics, even today our knowledge on this subject is regularly updated with new ideas and as we progress further into this subject we begin to discover basically, the many secrets of our universe. In the early 1900s, mankind had basically been able to answer nearly all of the questions concerning physics with the knowledge gained from giants such as Newton. However 10% were unanswerable, they simply could not figure out what was going on and why certain things did not obey rules set down by classical physics. In order to overcome this problem, scientists had to propose some new radical ideas regarding the relationship between matter and energy. Surprisingly a selection of these many dreamt up ideas worked and so quantum theory was born. As said by one of the forefathers of this theory, Erwin Schri dinger (famous for his thought experiment), I do not like it, and I am sorry I ever had anything to do with it. One from the Great Dane, Niels Bohr, Anyone who is not shocked by quantum theory has not understood it. And lastly one from the Richard Feynman, I think it is safe to say that no one can understand quantum mechanics. Generally quantum phenomena can only be observed in atomic and sub-atomic scale, it is rare to see such observations on a large scale. Of the various interpretations of quantum theory that have been proposed, most physicists accept the Copenhagen Interpretation, however this does not mean it does not have any faults or lead to any paradoxes. This brings us onto Schri dingers cat, a thought experiment which criticises the Copenhagen Interpretation of quantum mechanics, stating that the interpretation would just collapse when applied to objects on a large scale, in his case, a feline mammal. If atoms can exist in a state of superposition then is it reasonable to say that larger bulkier objects can since it is also made from atoms? He points of that such as theory would state that a cat can be dead and alive at the same time, which seems impossible. Now we introduce the observer effect, which makes this problem a little bit disturbing, many have talked about the act of measurement as the moment that causes the collapse of superposition, leading to an outcome. Furthermore some scientists even believe that human consciousness is necessary to trigger the collapse, resulting in questions about the roles of consciousness in our universe. For example, if we turn our back on an object, does that object even exist anymore; was it just a part of our imagination, a virtual reality? However, we are not here to discuss about such philosophical subjects, as I mentioned before, there are some special cases where certain objects can be seen with ones naked eyes obeying the rules governed by quantum theory. Once such example is the rather strange state of matter, BEC or Bose-Einstein Condensates, named after the two people who predicted the existence of such matter. It is regarded as an example of a superfluid, we will talk more about those later. The basic formation of a superfluid involves cooling down a sample such as helium gas (helium IV) just above -217oC or 2. 17K to form helium II. Note that the temperature required for such a formation is just above absolute zero, 0K or 217. 15oC. Absolute zero is the theoretical temperature in which particles have a minimum energy. However at these conditions we can observe odd and strange phenomena that are governed by the rules of quantum mechanics. To cut a rather long story short, when helium IV is cooled down to such a low temperature, every single atom will occupy the lowest energy level resulting in a very strange state of matter due to the fact that every single atom will be identical. The Indian theoretical physicists Satyendra Nath Bose in the 1920s, whilst studying the new idea of light being made from discrete packets (now we know as quanta or photons), proposed some rules which decided whether two photon should be treated as the same particle or differently. This is now known as Bose-Einstein Statistics. Einstein had several roles to play in the events leading up to the proposition of the existence of BEC. Firstly he used his influence to allow Boses papers to be published in certain journals. Secondly but also most importantly, he used Boses rule in the context of atoms, seeing that photons and atoms are relatively the same thing. When these rules were applied to atoms in gases, for most temperatures, the behaviour according to him was pretty much the same as Boses prediction. However when it was applied in near absolute temperatures, near 0K, strange phenomena were predicted to happen. So puzzled was Einstein that he himself was unsure if his predictions and calculations were correct. Both scientists were unable to live long enough to observe the production of BEC, although superfluids were able to be made, it was not until 1995 when the worlds first condensate was made. Made by Eric Cornell and Carl Weiman, both of whom with Wolfgang Kettle, won the 2001 Nobel Prize in Physics for their works on condensates. In order to achieve this feat, they had to cool a gas of rubidium atoms to 170 nanokelvin, equivalent to -273. 14999983oC. Also it should be noted that BEC can only be called a true BEC when bosons, particles that carry a force, are supercooled, otherwise when other particles are used, the BEC can also be called a super atom (due to the fact that all the atoms are identical thus losing their individuality, all forming a single blob). As I have mentioned earlier, BEC can be considered as a superfluid. One very special example of a superfluid is helium II. The boiling point of helium gas was found out to be 4K, therefore when cooled, helium I (normal liquid helium) can be seen boiling and bubbling away. However as the temperaure moves towards absolute zero, 0K, we notice a change in properties. As it nearly approaches 2K, all movement stops, and the helium becomes very still. At approximately 2. 17K, helium I becomes helium II, a superfluid. This point is known as the lambda point due to the shape of the above graph, which looks similar to the greek letter lambda (? ). Here the helium I show some remarkable properties, such as at this point, the viscosity or treacliness of helium duudenly drops by a factor of a million, soon becoming zero. It also has zero entrophy, the measure of randomness of molecules in a system, and infinite thermoconductivity. It can perform two strange feats which can actually be seen with the naked eyes. One is when a beaker is lowered onto a container of helium II and then partially withdrawn, a thin film of helium II (a single atom thick) will form over the entire surface of the beaker. Then depending on the level of helium inside and outside the beaker, it will try and flow into the beaker until both levels are equal. A similar behaviour can be observed when a beaker of heium II is withdrawn completely from a bath of the same substance, it will creep up the sides of a container and try to debeaker itself via flowing over the top of the beaker and down the sides until it combines to form a drop of liquid at the bottom of the beaker, dripping back into the bath. Apparently in both cases, it is an example of the heliums futile attempt to reduce its own energy level, which is theoritically already at its lowest. The other feat I wish to mention is known as the fountain effect or the thermomechanical effect. If a capillary tube is placed in a bath of helium II and then heated, it will cause the liquid to flow up the tube, thus forming a fountain. It actually takes only a small amount of thermal energy to cause this effect, even radiation from visible light is enough to heat it up. One interesting application of superfluid was to trap and slow down the speed of light. In one experiment, performed by Lene Hau of Harvard, the speed of light was managed to be reduced to only 17 metres per second and momentarily stopped via the use of superfluids. Another phenomenon which occurs near absolute zero temperature is the existence of superconductors. This only happens with certain materials, characterized by zero electrical resistance and the expulsion of a magnetic field. Superconductivity can occur in a variety of materials such as simple elements (e. g. tin and aluminium), metallic alloys and some semiconductors. However it cannot occur in noble metals and most ferromagnetic materials. There are two types of superconductor, Type I (conventional superconductors), materials that only exhibits superconductivity at near absolute zero conditions. Secondly in 1986, there was the discovery of high temperature superconductors (Type II). This allows certain materials to undergo superconductivity at a higher temperature than conventional type I, around 77K, the boiling point of liquid nitrogen. The picture below shows a magnet levitating above a Type II superconductor; this is due to the fact that the superconductor can exclude the magnetic field of the magnet, resulting in the formation of an electromagnet that repels the magnet. The basic principles of superconductors can be explained by the visualization of electrical current as a sea of electrons, basically a fluid, which moves across an ionic lattice. Electrical resistance is caused by collisions between the ions and the electrons in the fluid. However, in superconductors, instead of a fluid scattered with individual electrons, it is filled with bound pairs of electrons, known as Cooper pairs. Quantum theory dictates that this fluid becomes a superfluid, resulting in a change in property, such as it cannot exhibit electrical resistance. The characteristics of superconductivity only appears when the termperature of the material is cooled below its critical temperature (Tc), generally Type I temperatures range from 20K to 1K. The graph below shows the relationship between temperature and resistivity of a material, we can see it must be a Type II superconductor due to its relatively high critical temperature.

Why People Cannot Ask For Help Essay examples -- Asking For Help

It can be seen all around us. It may, in fact, affect a good number of us. What is affecting so many people is something called the wall of pride. start to build this wall once they turn into adolescents. The wall of pride is nearly indestructible and many problems. Some people build their wall so high that they are no longer able to ask for help and that can be destructive. The unavoidable truth is that everybody needs help at some point in his or her life. What makes some people refrain from asking for it? . It can be seen in many TV shows, movies, or books. . My own mother has had experience with this strange stereotype. When I interviewed her she said that one notable experience stood out from the many. This event happened a couple of years ago when my family was driving back from Colorado. She said that we were on our way back and my dad wanted to stop at a nursing home to visit his grandma. Now, this nursing home was in the middle of nowhere, Nebraska. After visiting, my mom asked my dad if he needed any help getting back onto the road. My dad took offence that my mom thought that he did not know where he was going. My mom said that he would not listen to her or look at a map. He said that he grew up going to visit his grandma and knew exactly where to go. My mom said that she gave up trying to help and started to read her book. A few hours later, my mom asked if he needed any help because we were still not on the highway. My dad said that he might have taken a wrong turn Kansas. This was a time before smart phones and GPS. My mom said that we had to find a rest stop and buy a map in order to get back onto the correct highway. When I asked if he listens better now, my mom said that my dad still does not like to ge... ...rove as a society until we can learn our weaknesses and rely on others for help to broaden our overall knowledge. Only when we reach that point will the wall of pride be desolated. Works Cited â€Å"Asking For Help†. Personal Experiment. Ed. Kim Geis. 7-19 Nov. 2013. Fallows, Deborah. "The Internet and Daily Life." Pewinternet.org. Pew Internet, 11 Aug. 2004. Web.10 Dec.2013. Gladwell, Malcolm. The Tipping Point: How Little Things Can Make a Big Difference. Boston: Back Bay, 2002. Print. Geis, Kim. â€Å"Student Survey.† Survey. 12 Dec. 2013. Geis, Teri. Personal interview. 11 Dec. 2013. Mayerowitz, Scott. "Male Drivers Lost Longer Than Women." ABC News. ABC News Network, 26 Oct. 2010. Web. 10 Dec. 2013. Seidman, Dr. Daniel. "Men and Asking for Help." The Huffington Post. TheHuffingtonPost.com, 08 Dec. 2010. Web. 10 Dec. 2013.

Peel Memorial Hospital Case Analysis Essay

Introduction Prior to the 1990s, generous government funding allowed Canadian health care facilities to provide excellent service and quality. In the early 1990s, increasing health care costs have changed government funding, requiring providers to be more financially accountable. In the mid-1990s, hospitals and regional health authorities across Canada were under siege from funding restraints, mergers and forced closures. At the same time, the healthcare industry was focused on delivering high-quality patient care and aligning the key stakeholders to the newly created vision. To evolve and to survive, Peel Memorial Hospital (PMH) implemented the Balanced Scorecard performance management system and that is the focus of this case study. Also highlighted are the value of and the benefits to be gained when best practices from the corporate sector are successfully adapted to the health care environment. History and Issues Peel Memorial Hospital (PMH) in Brampton Ontario lacked measurable targets and tired Mission Statement that tried to be all things to all people (Harber, 1998). Internal surveys revealed that employees were unclear on the organization’s strategic direction and the linkage of various programs and initiatives undertaken. In 1994, PMH embarked on a comprehensive Continuous Quality Improvement (CQI) training program for all staff which was followed by a burst of departmental and interdepartmental improvement initiatives. The hospital management looked closely at whether time, money and energy were being focused on the key clinical and business processes. Meanwhile, the hospital employees wanted to know how the evolving program management structure relates to PMH’s move into a patient focused care model; how these organizational development initiatives tie in with PMH’s move to shared governance models for nursing and the professional discipline; and where the fit for CQI and new computer system were. Working with Xerox Quality Services, PMH identified the â€Å"balanced scorecard† solution as a good fit for PMH and an effective vehicle to further evolve the organization. In 1995, PMH adopted the balanced scorecard system to measure its performance. Performance Management System Analysis The use of balanced scorecard in hospitals as part of their performance management and strategic management system has increased substantially. These scorecards incorporated the concern of the hospitals’ stakeholders, focused on the hospitals’ processes, and included both financial and non-financial indicators for performance measurement. The balanced scorecard at PMH included six categories of business with 23 data elements that were the drivers of the performance results. At the center of the Integrated Management Model framework was the Patient and Community Focus. The other five categories of business were Management Leadership, Human Resource Management, Patient Care Process Management, Quality Tools and Information Utilization, and Performance Results, and their interrelationship was identified in the framework (Harber, 1998). â€Å"The first year of implementation included objectives that identified the need for corporate measurement tools such as patient and st aff/team satisfaction† (Harber, 1998, p. 60). During year two of implementation, the Integrated Management Model was streamlined to reduce the data elements. By now, PMH had become more adept at managing and understanding the causal relationship between performance indicators and performance results. It had a good idea of which performance results help to drive performance results in other areas. Although the development of the balanced scorecard was a major undertaking and the development of performance measures a challenge, the implementation of balanced scorecard at Peel Memorial Hospital was a success as the satisfaction level from patient rose from 89 percent to 95 percent and the staff satisfaction survey participation rose from 33 percent to 75 percent. Also, PMH achieved a better understanding of where to invest time and money  in learning objectives and the ability to relate mission and vision statements to performance. It also enables PMH to become the lowest-cost provider in its peer group. The balanced scorecard provided PMH the ability to translate the hospital’s strategic objectives into a coherent set of performance measures as well as to align the seemingly disparate elements with organizational objectives. Conclusion Mello (2011) says that performance management systems can significantly impact organizational performance and process. The achievement of organizational goals requires a sensible balance between managerial commitment to the strategic interests of a business and to the human interests of its everyday operation at every level. The successful in health care management will depend on organizations and top executives balancing quality and customer satisfaction with adequate financing and long-range goals. The balanced scorecard not only provides a framework for establishing performance measurement goals but also incorporates continued quality improvement throughout the organization. Today, more and more Canadian hospitals have adopted balanced scorecard as their strategic management system. References Mellow, J. A. (2011). Strategic Human Resource Management. Mason, OH: South-Western Cengage Learning. Chapter 10, p. 438-454. Harber, B. W. (1998). The Balanced Scorecard Solution at Peel Memorial Hospital. Hospital Quarterly, p. 59-63.

Essay on Analysis of Two Advertisements - 753 Words

I will be analyzing two advertisements, stating how effective they are likely to be in achieving their purpose and in selling a renter’s paradise. In my analysis I will include a list of persuasive techniques used in these advertisements. Undoubtedly, the purpose of an advertisement is a strong appeal to the readers. The purpose of the first advertisement; The Grove, apartments is to persuade the audience to experience the pleasurable and joys of living. It strongly reinforces the views through the content of the text and captures the interest of the audiences through multiple eye-catching pictures. When the reader first looks at the advertisement, it makes him or her feel how entertained and amusing this place can be in spite of the all†¦show more content†¦This advertisement for The Grove is trying to evoke emotions and to link those emotions to their product. One look at this ad and immediately the â€Å"awww†¦.† Factor is engaged. They do a very good j ob linking their product to good times and the first feelings associated with this first time of living away from home that brings out the independence in all young adults. When you look at the ad even closer you see the colors at the bottom, drawing your eye in at the logo of The Fleharty 2 Grove. In the background, bringing about the warm feelings is bland pastel colors of keeping your eye focused on the fun pictures. The greatest eye-catcher within this as is the â€Å"unlimited fun limited vacancies† (Lubbock Apartments 85) text across the top is used in a large, bold red font. Secure and enjoyable feelings associated subtle but powerful images. By using the many different exciting scenarios in their ad they get you to transfer the feelings that this single-handedly brings out in all of us to their product. They want you to believe that their apartments are so awesome, so desirable and a good representation of college student product by using the images of students studying and at the same time have enough time to hang out and have fun with friends. They link to the desires and feeling of what the average college age American wants or should want, by using these powerful images. Looking into an opposite livingShow MoreRelatedAnalysis of Two Advertisements Ess ay773 Words   |  4 PagesAnalysis of Two Advertisements I will be analysing two advertisements, stating how effective they are likely to be in achieving their purpose and in selling as a cruise holiday. In my analysis I will include a list of persuasive techniques used in these advertisements. Undoubtedly, the purpose of an advertisement is a strong appeal to the readers. The purpose of the first advertisement; Ciudadela, Menorca, is to persuade the audience to try this holiday. It strongly Read MoreAn Analysis of Two Advertisements Essay2548 Words   |  11 PagesAn Analysis of Two Advertisements I am going to analyse two adverts and discuss which one is more effective. The first advert that I am going to study is marketing New Synergie lift by Garnier. The second is promoting the product Total turnaround by Clinique. Both adverts were obtained from Marie Claire- a magazine intended for women aged between twenty and thirty. This suggests that the target audience for these two particular adverts is women, who are possiblyRead MoreEssay about Analysis of Two Advertisements1126 Words   |  5 PagesAnalysis of Two Advertisements One of the massive international industries in the world is advertising. The money that it makes is inestimable because it successfully sells, and attains most the aims of their business. It promotes ideas and products to people using the media. A lot of people feel overwhelmed by the huge number of ads that bombard them everyday. It saturates every media around to meet its target. Adverts now appear not only on television; they also appearRead MoreAnalysis of Two Advertisements of Beauty Product Essay1102 Words   |  5 PagesAnalysis of Two Advertisements of Beauty Products I have analyzed two advertisements, which are both promoting beauty products. The first advertisement I have chosen is Boujour Paris Talon Aiguilles Mascara which was found in the heat magazine and it is aiming at young female adults. The second advertisement I have chosen is Prescriptive Foundation which in contrast to the first advertisement is aimed at an elder audience. In addition this advertisement was foundRead MoreThis Rhetorical Analysis Will Be Focusing On Two Advertisements.824 Words   |  4 Pages This rhetorical analysis will be focusing on two advertisements. The first is â€Å"Top Gear: Ice-Cream† by the agency Selmore and the second is â€Å"the back seat slingshot ad†, for which I do not know it’s real title, by the agency Clement BBDO. The first advertisement depicts the importance of seat belts by using an analogy between children and ice cream. In this ad, an adult, presumably a man, is driving on a nice day with a splattered pink ice cream cone on the windshield. The first thing the audiencesRead MoreEssay Analysis Of Advertisements For Two Different Things1235 Words   |  5 Pages Analysis of Advertisements for Two Different Things nbsp;nbsp;nbsp;nbsp;nbsp;In order for advertisements to succesfully portray a product, they must be directed to the appropriate intended audience. Magazines, in general, are usually geared towards a specific audience with distinct interests. Therefore, the `ads need to be carefully designed to attract the attentions of the magazine reader. This very concept is well displayed in the two selected, yet very different, magazine ads from theRead MoreEssay about Analysis of Two Print Advertisements873 Words   |  4 PagesAnalysis of Two Print Advertisements For this piece of coursework I will be looking at two different adverts made by the same company, Muller, and finding the techniques that are used and what the effect of these methods are on the reader. The first advert is for Muller light mousse. It has a picture of a large mousse pot in the foreground, which has been manipulated to make the viewer’s eyes believe that it is the end of a bath tub, and in the bath tub is a youngRead MoreAnalysis of Two Advertisements From Magazines Essay1280 Words   |  6 PagesAnalysis of Two Advertisements From Magazines I have chosen adverts that are both aimed at teenagers, as this is the biggest market, and the one companies make most money from. As I am a teenager I can identify with the target audience and therefore decide whether the adverts successfully target their audiences. The two adverts I choose to analyse were very different; although they were both aimed at the same target audience, they used different persuasive techniquesRead MoreResearch Paper: Content Analysis of Nine Creative Concepts Found in Magazine Advertisements.1392 Words   |  6 Pages1 MAIN ISSUE This research is a quantitative, cross-sectional, exploratory and descriptive content analysis of selected advertisements from two different magazines published in August 2012 using the nine different creative concepts as main emphasis. 2 RESEARCH CRITERIA The main research problem deals with the use of creative concepts in advertisements which is a mass media issue and therefore contributes to the existing knowledge in communication studies. The issue is also of interestRead MoreResearch Paper: Content Analysis of Nine Creative Concepts Found in Magazine Advertisements.1386 Words   |  6 Pages1 MAIN ISSUE This research is a quantitative, cross-sectional, exploratory and descriptive content analysis of selected advertisements from two different magazines published in August 2012 using the nine different creative concepts as main emphasis. 2 RESEARCH CRITERIA The main research problem deals with the use of creative concepts in advertisements which is a mass media issue and therefore contributes to the existing knowledge in communication studies. The issue is also of interest to