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Who Tamed Fire First? Essay -- Exploratory Essays Research Papers

Who Tamed Fire First? The more distant back in time we investigate, the more space there is by all accounts for inconsistency among different speculations in regards to the historical backdrop of the earth. One of the many questioned parts of history concerns the idea of the connection among people and the earth. This paper will concentrate on the discussion of the birthplace of first restrained fire. Was it Homo erectus or Homo sapiens? The broadly acknowledged theory of prehistoric cosmic detonation of development paints Homo erectus as close to a shrewd chimp, (McCrone, New Scientist, May 20, 2000, 31) with a, 15-minute culture, (McCrone, 34) unequipped for controlling his general condition. Despite the fact that regardless of whether we were to accept he was truly equipped for achieving this demonstration, McCrone clarifies, controlling fire basically appeared to be too mentally advanced an accomplishment for this animal, who were, crude toolmakers, and gave no indications of representative thoroughly considering the following at least million years of their reality, (McCrone, 31). Under this hypothesis, any remaining parts of flames from his time are discounted as shrubbery fires, lightning strikes, and other such normally prompted events. It isn't until Homo sapiens goes along that people are considered to have started to ace their condition. An ongoing, all the more deductively based examination of antiquated Chinese flames underpins this equivalent position that Homo erectus was not the first to tame fire. The geographical examination occurred at the Zhoukoudian site in China, where a restricting hypothesis denotes the main controlled fire at 500,000 years prior by Homo erectus' hands, (Wuethrich, Science Magazine, July 10, 1998). Despite the fact that they affirmed recuperating consumed bones from the site, there was no strong proof to propose the controlled utilization of fire, for example, hearths,... ...request in our reality. It gives us a past, present and future. Time likewise offers us a feeling of point of view, so we can cause bits of knowledge and associations, to choose what is valid and what is bogus, what is important and what is insignificant. In such manner, the discussion over the time and inception of the main restrained fire is a powerful representation of the manners by which time influences our view of mankind and its relationship with the earth. Which hypothesis of inception we at last decide to accept is especially noteworthy in that it gives understanding into the manner by which we see ourselves comparable to our past. Sources Cited: Did Homo Erectus Tame Fire First? Balter, Michael. Science. June 16, 1995. Started Up. McCrone, John. New Scientist, May 20, 2000. Land Analysis Damps Ancient Chinese Fires. Wuethrich, Bernice. Science Magazine, July 10, 1998.

Staying Agile 5 Best Practices in Software Project Management - Focus

Staying Agile 5 Best Practices in Software Project Management - Focus When launching a new software project, the chances are it’s been proposed for one of two reasons: either your stakeholder has a groundbreaking idea that they feel will bring unique value to users, or they have a pain-point that they need help solving. What’s also likely is that as the project progresses, these plans that first justified the project will change considerably. As new market information emerges, features, priorities, and timelines will adapt. Perhaps the solution you first had planned for your client is actually too complex for their non-technical team members. Or maybe a competitor has entered the market since development began, making your unique selling point a little less unique. In either scenario, your team members need workflows in place that enable them to be flexible, overcoming hurdles that could otherwise throw a project off-course. This is where Agile project management comes into its own. First introduced back in 2001, mastering the Agile Manifesto has become the holy grail of many project managers. And theres a reason for that. According to the VersionOne 2012 Agile Dev Survey, 90% of participants claimed that implementing an Agile practice improved their ability to manage changing priorities. Other studies have echoed the benefits of Agile, with the approach speeding up delivery time to market by an average of 37% and raising team productivity levels by 16%. However, a lot of things have changed in the business world over the past 16 years, and many teams now struggle to make the original Agile values work for their projects.  To create a modern guide to Agile, we spoke with five successful Agile teams about how they’re putting Agile project management into action in their software development projects and achieving great results. A Modern Guide to Agile Project Management Combining the lessons of five successful Agile teams with over 15 years of experience in Agile, we’ve formulated five best practices in taking an Agile approach to software management. We’ve collated key challenges to watch out for, and have provided  strategies to overcome them. These lessons are now available in our brand new, free white paper: Staying Agile: 5 Best Practices in Software Project Management. Staying Agile5 Best Practices in Software Project Management Download The Free White Paper Looking at how best to implement the 12 values listed in the Agile Manifesto, our white paper includes: Establishing the ‘Why’: How to begin every project with a strategy sprint Too often, teams will jump into a project without a thorough assessment of what’s already available and why the planned product is required. Before development work begins, all teams should implement a strategy sprint to identify either: Which pain point(s) the proposed product would be solving Which unique experience or service the proposed product would support. This strategy will then establish the vision for the project ahead. Within the first chapter of the white paper, we’ve shared why it’s necessary to hold a strategy sprint and included a day-by-day plan for what the sprint should cover. Planning to Perfection: How to develop a realistic project budget As mentioned, with new market information, project plans and expectations will adapt and evolve. However, it’s still essential that project teams first establish a realistic project scope and budget with the client or stakeholder, ahead of beginning development. In the second chapter of our white paper, we provide a step-by-step guide for creating a realistic initial project scope and budget with your client, which will adapt as additional requirements inevitably emerge. Customer Values: How to engage with client and user feedback at every iteration Inviting and embracing customer and stakeholder input at every iteration is the bread and butter of Agile project management. However, accessing, truly listening to, and disseminating this information can prove to be a challenge. In our customer values chapter, we’ll take you through a 3-step plan for integrating user feedback into your project development process at every iteration. We’ll also provide strategies for demonstrating this to your client transparently, through a number of collaboration solutions both online and offline. Collaborating Cross-Departmentally: Enabling communication between business and development When the Agile Manifesto was written back in 2001, the team argued that the best cross-departmental collaboration is done via face-to-face meetings. However, 16 years on, distributed teams are now commonplace across the technology sector, making in-person meetings difficult. In the fourth chapter, we’ll go through a handful of strategies for improving communication between business and development team members, regardless of technical level, in order to prevent departmental siphons. Sustainable Productivity: How to achieve team efficiency long-term While taking an Agile approach to project management, it’s essential that teams are able to streamline their workflows in order to be productive. However, it’s also vital that these productive workflows are sustainable and won’t result in team burnout. In our final chapter, we’ll recommend strategies for holding sprint retrospectives that will get the most out of each development cycle, while ensuring that your team members aren’t overloaded. With these strategies, your team will be able to develop a more refined product, while also avoiding bottlenecks and the risk of causing team stress. Whether you’re new to Agile and looking to persuade colleagues about the benefits, or are already using Agile and hoping to improve your team’s workflows, our Agile guide will provide you with tangible lessons to apply in your team. Staying Agile5 Best Practices in Software Project Management Download The Free White Paper P.S. Did you know we offer a live workshop on Agile project management, too? Learn more and sign up here. Staying Agile 5 Best Practices in Software Project Management - Focus When launching a new software project, the chances are it’s been proposed for one of two reasons: either your stakeholder has a groundbreaking idea that they feel will bring unique value to users, or they have a pain-point that they need help solving. What’s also likely is that as the project progresses, these plans that first justified the project will change considerably. As new market information emerges, features, priorities, and timelines will adapt. Perhaps the solution you first had planned for your client is actually too complex for their non-technical team members. Or maybe a competitor has entered the market since development began, making your unique selling point a little less unique. In either scenario, your team members need workflows in place that enable them to be flexible, overcoming hurdles that could otherwise throw a project off-course. This is where Agile project management comes into its own. First introduced back in 2001, mastering the Agile Manifesto has become the holy grail of many project managers. And theres a reason for that. According to the VersionOne 2012 Agile Dev Survey, 90% of participants claimed that implementing an Agile practice improved their ability to manage changing priorities. Other studies have echoed the benefits of Agile, with the approach speeding up delivery time to market by an average of 37% and raising team productivity levels by 16%. However, a lot of things have changed in the business world over the past 16 years, and many teams now struggle to make the original Agile values work for their projects.  To create a modern guide to Agile, we spoke with five successful Agile teams about how they’re putting Agile project management into action in their software development projects and achieving great results. A Modern Guide to Agile Project Management Combining the lessons of five successful Agile teams with over 15 years of experience in Agile, we’ve formulated five best practices in taking an Agile approach to software management. We’ve collated key challenges to watch out for, and have provided  strategies to overcome them. These lessons are now available in our brand new, free white paper: Staying Agile: 5 Best Practices in Software Project Management. Staying Agile5 Best Practices in Software Project Management Download The Free White Paper Looking at how best to implement the 12 values listed in the Agile Manifesto, our white paper includes: Establishing the ‘Why’: How to begin every project with a strategy sprint Too often, teams will jump into a project without a thorough assessment of what’s already available and why the planned product is required. Before development work begins, all teams should implement a strategy sprint to identify either: Which pain point(s) the proposed product would be solving Which unique experience or service the proposed product would support. This strategy will then establish the vision for the project ahead. Within the first chapter of the white paper, we’ve shared why it’s necessary to hold a strategy sprint and included a day-by-day plan for what the sprint should cover. Planning to Perfection: How to develop a realistic project budget As mentioned, with new market information, project plans and expectations will adapt and evolve. However, it’s still essential that project teams first establish a realistic project scope and budget with the client or stakeholder, ahead of beginning development. In the second chapter of our white paper, we provide a step-by-step guide for creating a realistic initial project scope and budget with your client, which will adapt as additional requirements inevitably emerge. Customer Values: How to engage with client and user feedback at every iteration Inviting and embracing customer and stakeholder input at every iteration is the bread and butter of Agile project management. However, accessing, truly listening to, and disseminating this information can prove to be a challenge. In our customer values chapter, we’ll take you through a 3-step plan for integrating user feedback into your project development process at every iteration. We’ll also provide strategies for demonstrating this to your client transparently, through a number of collaboration solutions both online and offline. Collaborating Cross-Departmentally: Enabling communication between business and development When the Agile Manifesto was written back in 2001, the team argued that the best cross-departmental collaboration is done via face-to-face meetings. However, 16 years on, distributed teams are now commonplace across the technology sector, making in-person meetings difficult. In the fourth chapter, we’ll go through a handful of strategies for improving communication between business and development team members, regardless of technical level, in order to prevent departmental siphons. Sustainable Productivity: How to achieve team efficiency long-term While taking an Agile approach to project management, it’s essential that teams are able to streamline their workflows in order to be productive. However, it’s also vital that these productive workflows are sustainable and won’t result in team burnout. In our final chapter, we’ll recommend strategies for holding sprint retrospectives that will get the most out of each development cycle, while ensuring that your team members aren’t overloaded. With these strategies, your team will be able to develop a more refined product, while also avoiding bottlenecks and the risk of causing team stress. Whether you’re new to Agile and looking to persuade colleagues about the benefits, or are already using Agile and hoping to improve your team’s workflows, our Agile guide will provide you with tangible lessons to apply in your team. Staying Agile5 Best Practices in Software Project Management Download The Free White Paper P.S. Did you know we offer a live workshop on Agile project management, too? Learn more and sign up here.

Should vegetarianism remain purely a personal choice - Free Essay Example

Sample details Pages: 2 Words: 596 Downloads: 2 Date added: 2019/07/03 Category Health Essay Level High school Topics: Vegetarian Essay Did you like this example? I can remember staring at the food pyramid poster in health class every day in Elementary School. The message of the graphic is still ingrained in my memory to this day: to maintain a healthy lifestyle, I needed to eat a balanced diet. The simple graphic told students to eat larger portions of the food groups at the base of the pyramid (grains, fruits, and vegetables) and the fewer portions of the foods at the top (fats, oils, and sweets). Only in the last few years have I realized the flaws of this graphic developed by the USDA and pushed out throughout the US educational system. The food pyramid explicitly privileged diets that include meat and animal products as the healthiest option, titling the protein category as meat. Even in new initiatives, like My Plate, include a dairy section and glides overplant-based protein sources. Although a government requirement for vegetarianism would shift the dietary pendulum too far, meatless diets should be acknowledged as viable, healthful diets for the American people. Don’t waste time! Our writers will create an original "Should vegetarianism remain purely a personal choice" essay for you Create order Simply put, the diet debate has focused on the wrong issue. Rather than debate omnivore versus vegan, government support for the reduction of large quantities of meat would help Americans realize that meatless is a healthful, practical option. Research has shown that well thought-out meatless diets can have major health benefits that can lead to long, healthy lives. A vegetarian diet may help prevent Heart Disease, Cancer, and Type 2 Diabetes. However, proper planning is necessary to ensure that sufficient nutrients are consumed. Vegetarianism can consist of a diet of bread, pasta, and cheese; although delicious, any diet can be unhealthy when it consists of too many foods from a food group, regardless of if it includes meat. Some may claim that a government mandate of a plant-based diet is the solution. This is equally impractical and ineffective. When the US government has attempted to regulate the consumption of substances like alcohol or tobacco, cultural phenomena including social disapproval, scientific innovation, and shifts in public perception have driven public policy (Kersh and Monroe, 163-166). Although these activities have begun, there is no large-scale movement to cut meat out of our diets. Mandating reduced meat consumption as a governmental policy will not improve the eating habits of the American people. Food consumption is polarizing issue, with individuals adamantly sticking to personal preferences. Eating is perceived as a deeply intimate act, one in which individuals decide their nutrition. Michael Pollan put it simply: Eat food. Not too much. Mostly plants. Before the government can formally support meatless diets, vegetarian diets need the even footing that comes with governmentally-backed legitimacy. Demonstrating this support is simple: rather than viewing primarily plant-based diets as an alternative to the mainstream, the government should present vegetarian diets as equally valid as meat-based diets. Opponents may claim that these adjustments in messaging are trivial and will not impact the eating habits of everyday Americans in the grocery store. This is simply not true. Words matter, as do pictures. That infamous pyramid graphic design is known by all and questioned by few. Formal government acknowledgement of vegetarianisms viability as a healthy eating practicecoupled with its ethical and environmental backingsis by no means the end-all-be-all solution to the healthy eating crisis plaguing the United States. However, this shift in messaging is an important and necessary step toward progress. Support for plant-based eating needs to come from the ground up to become a sustainable shift. Giving the meatless movement, the opportunity to prove itself is the needed first step in a long trek toward healthier American eating practices.

Environmental Risk - 2484 Words

Environmental Risk Introduction Plastic bags have been around for ages now and have a multitude of different uses. Since the 1960s, people of all ages have been using these multi-purpose bags for a variety of purposes including shopping, carrying personal items and for dumping garbage (Sugii, 2008). Plastic bags are mostly single-use items which consumers can dispose off once used and took the world by storm once introduced, replacing the popular paper bags. Plastic Bags what makes them useful? Plastic bags are made from a thin layer of plastic textile or film, the most popular being Polyethylene, and sealed together by adhesives or heat-sealed. They are available in a variety of design options to offer all kinds of convenience to the consumer. Some have hard or soft handles in order to offer carrying convenience while others boast easy-to-open and seal options to keep its contents airtight. Examples of such bags include the popular Ziploc bags which are often used to refrigerate edible contents while keeping them airtight. Moreover, plastic bags are leak-free and can be used to transport frozen and wet items without worrying about leakage during transportation. The bags can also be developed in different colors and with messages, which do not wear off very quickly, thus making them popular with businesses, which like to offer their own branded shopping bags to customers. The design friendly aspect of plastic bags means there is always room to innovate and customizeShow Mor eRelatedEnvironmental Scanning And Key Risk Indicators809 Words   |  4 Pagesorganization risk, such as Risk Analysis Questionnaire, Financial Statement Method, Flowchart Method, On-Site Inspections, Environmental Scanning, and Key Risk Indicators (Fraser Simkins, 2010). Ultimately, I chose to use Environmental Scanning and Key Risk Indicators to assess The Kroger Company’s risk. Comparatively, each tool offers unique advantages and viewpoints of the organization’s operations, current risk, and perceived future risk. So, why did I choose Environmental Scanning andRead More Media Portrayal of Environmental Risk Essay2931 Words   |  12 Pages Media Portrayal of Environmental Risk: Dissemination or Delusion? Transmission of ideas and information through media avenues like television and the press are the predominant means by which much of contemporary culture and the developed world obtain vital information. The media has an enormous impact on the public’s conceptualization of ideals: societal perceptions are shaped by the information made available to us through the different venues of media. Examining how the transmittal of informationRead Moreadvantages and disadvantages of environmental risk management1374 Words   |  6 Pagesdisadvantages of environmental risk management?   Advantages: 1. Better strategy of company. Through the environmental risk management, we are going to have a better understanding on the environment, which may make have a better decision making on company strategy. Usually, if we know a place which may suffer from earthquake or tsunami frequently, we may not build or open some department on that place in order to reduce risk. If we have better understand or information for environmental risk, we canRead MoreAnalysis Of Norman s Article About Environmental Risk894 Words   |  4 PagesIn Norman Wei article about Environmental Risk, he uses the word, â€Å"risk† several times throughout the article too really bring in the interest of the reader. By using the word risk he is applying an emotional aspect to life. By doing this he makes the reader visually imaging the possibility of their overall physical harm. He then mentions the possibility of the risk we face every day as we act in our normal lives such as, â€Å"there is a risk of car crashes as we drive along the f reeway.† Now at thisRead MoreEvaluating The Environmental Quality International On A Risk Management Plan1397 Words   |  6 Pageswith ATOM technique will be utilized for the Environmental Quality International in Siwa Project: †¢ Initiation: clarifying and recording targets of the project being evaluated, and defining the subtle element of the methodology has to be executed archiving the outcomes in a risk management plan. †¢ Identification: exposing and reporting which it may influences projects goals either emphatically or adversely †¢ Assessment: either qualitatively describing risks individual so they can be understood and prioritizedRead MoreMaterial Disclosure Of Risk Assessment And Implications Of Environmental, Social, And Governance Essay805 Words   |  4 Pages1.0 INTRODUCTION It is through the guidelines report that material disclosure of risk assessment and implications of environmental, social, and governance (ESG) factors is increasingly important, therefore companies need to raise awareness, management, and responsibility in offering more substantiated reporting. 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(2015)Read MoreEnvironmental Risk Assessment931 Words   |  4 Pages Risk Assessment Worksheet Name ENV/420 Date Instructor Risk Assessment Worksheet Ecological Risk Assessment Framework The framework of ecological risk assessment consists of a problem statement (formulation), risk analysis, risk characterization, and risk management. A precursor to the problem statement involves a historical account and fundamentals of living organisms, ecological systems, and any substances, whether biological or synthetic, that may be introduced to environmental componentsRead MoreEnvironmental Risk Perception Paper1324 Words   |  6 Pages Environmental Risk Perception Paper Justin Yates Environmental Psychology June 17, 2014 Gerry Lloyd Environmental Risk Perception Paper As the earth continues to age, there are many harmful and lasting direct consequences that the earth and the human nature have endured. 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Analysis of National and Cultural Stereotypes Free Essays

Academic English for Business and Management Compare and contrast the two articles, making clear your criteria for comparison. To what extent do these articles show that national and cultural stereotypes are no longer a useful way of examining the human condition and economic activity? Choose an element in the articles which you find interesting and explain your reaction to it by giving examples from your own experience. Your full name: Binjie He Word count: 1152 As the development of globalization, world becomes smaller and smaller. We will write a custom essay sample on Analysis of National and Cultural Stereotypes or any similar topic only for you Order Now People who lived with each other become closer. Meanwhile, international trade is booming, and products could be bought in supermarkets from almost every area in the world. As a result, national and cultural stereotypes attract more attentions than ever before. This essay will compare and contrast two articles, â€Å"East meets west† (Yong, 2009) and â€Å"International Communication† (Piller, 2011), discuss the two authors’ opinions towards national and cultural stereotypes and present my own opinion from personal experience. However, before the discussion I will summarize the similarities and differences based on their type, audience, tone, structure, focus and the attitude to stereotypes. The final section will give an example of Haier, China. My aim is to eliminate people’s misunderstanding of stereotypes. There are two similarities according to the two articles. Firstly, both the two articles describe different reactions of people belonging to the same situation from different countries through examples. Secondly, both of them admit that the mindsets of people are different from various areas, and offer evidences for national and cultural stereotypes. As well as the above-mentioned similarities, there are several differences. At first, the types of these articles are various. Yong’s is an article, while Piller’s is a textbook. Next, the audiences of Yong’s are general public and interested amateurs. On the contrary, Piller’s are students and academics. In terms of the tone, Yong appeared to be a professor, while Piller spoke as a friend of the audiences. What’s more, Yong states the opular notions and his own opinion at the beginning of the article. He cites several experiments which supported popular stereotypes, then recent research is used to prove his opinion in the body, and a conclusion of his view is presented at the end of the article. Piller’s structure differs from Yong’s in that Piller gives an overview of the article at fir st, positive and negative examples are enumerated in the middle, and finally key points of the article are clearly listed. Moreover, the focuses of these articles are different. Except stereotypes, Yong emphasizes much on psychology. Conversely, Piller pays more attention on business, especially advertising. What’s interesting is that Yong opposed to stereotypes, which is different from Piller. The comparison of the two articles have been clear, and it will be vital to discuss to what extent do these articles show that national and cultural stereotypes can contribute to the human condition and economic activity. Yong doesn’t agree with stereotypes in his article. He argues the popular stereotypes that easterners and westerners have distinct world views are far too simplistic. There are pieces of research he conducted as follows. First of all, Yong agrees it is the contexts that evoke people’s mindset rather than history. Then, he suggests â€Å"while the psychology of westerners may be superficially distinct from easterners, when social isolation is an issue there is little difference between the two† (Yong, 2009, p. 34). It is indicated in Trey Hedden’s research that east Asians used the same brain areas with Americans when working harder, and people had to think harder to perform tasks outside their cultural comfort zone. Which was also found by Hedden is that it’s easy to flip between different modes of thinking in people with roots in more than one culture (Yong, 2009). It is generally said that easterners have a holistic world view and westerners are more analytical, while Yong reveals â€Å"we are all capable of both analytic and holistic thought† (Yong, 2009, p. 35). Greatly various from Yong, Piller argues that the stereotypes in advertising should be better utilized. She believes the use of language other than the national one is the key means to achieve intercultural commodification rather in branding and promotion. The most significant she stated is that although the commercial use of English rarely connoted an ethno-cultural stereotype, the use of other languages can connote stereotypes, which is beneficial for advertising. In the same way, the using of exotic languages in brands and advertising is popular in China. One of the examples is Chinese famous major appliances brand Haier. The company only had a Chinese name at its first stage. As the development of business, it entitled an English name of ‘Haier’, which is a word does not function linguistically in English but the pronunciation of it is similar to its Chinese name. What’s more, it seemed modern and international to the customers and easy for them to distinguish it from all the national brands at that time. It is also the first step to be an international enterprise to Haier. After that, the brand Haier was gradually accepted in and abroad. Up to now, Haier has been providing customers with high quality products for 27 years and is the number one brand of Major Appliances in the world with 7. 8% retail volume share in 2011. It also ranks number one for several of its product ranges including refrigeration appliances, home laundry appliances and electric wine cellars. As a forerunner in the industry, Haier emphasize much on customers’ needs and innovation. Since different people will have various requirements to the same appliance, what is the most important is satisfying the needs of local customers. Their global presence allows Haier to localise their production and build high-quality products tailored to local needs. Such examples about language using in brands and advertising are too numerous to mention one by one. Another element that I interested in is cultural differences’ relationship to logic, which apparent obviously in China. Logic is based on education and culture. â€Å"Harmony† is our traditional mindset which is taught at their early ages. That’s why Chinese always try to find a middle ground between two opposing positions to avoid conflicts. That’s why most Chinese students assessed the situation from both sides and try to reconcile the differences between mothers and daughters, while Americans are tend to inclined to reject one proposition for the other (Yong, 2009). Owing to this mindset, Chinese are afraid to be different from others. They want to be the â€Å"middle† people, who are neither the first, nor the last. In conclusion, I agree with the two authors’ opinions in these articles. As far as I am concerned, we should avoid racism because there are few differences between easterners and westerners. It is hoped that national and cultural stereotypes could be used on a positive way. In recent days, numberless examples of the using of languages in brands and advertising could be seen everywhere. What we should not ignore is that numerous of exotic languages benefit advertising a lot if sed properly and accurately. In my opinion, if an English name was used in brands or advertising, people could distinguish it from other national brands easily, and an international stereotype could also functional well. Finally, people’s logic is greatly based on their education and culture. It is the â€Å"harmony† education in China that makes Chinese ‘middle’ people. References Piller, I. (2011) ‘Intercultural Communication for sale’ in Intercultural Communication: A Critical Introduction. Edinburgh University Press Yong, E. (2009) ‘East meets west’ New Scientist March 2009 issue How to cite Analysis of National and Cultural Stereotypes, Essay examples

The Light Of Common Day Essays - Electromagnetic Radiation

The Light Of Common Day In this universe there are many thing that we cannot explain. Among these many things is light. Light, as far as we know, come in different wavelengths and the size of the wavelength determine what type of light it is. The middle wavelength lights are what gives us the seven basic colors of red, orange, yellow, green, blue, indigo and violet. Beside these visible lights there are the lights that cannot be seen by the human eye. These invisible lights can be grouped into two other groups the long waves and short waves. The first group of waves is the longer wavelength of light including infrared and radio waves. Radio waves, the longest wavelengths, alternate and can be volatile. Arthur C. Clarke said in the essay The Light of Common Day that since radio waves fluctuate so much no animal has ever been able to sense them. He goes on to say that if you had an eye big enough to see radio waves your eyes would be millions of times larger than a normal eye. The next longest wave is the infrared light waves. Infrared light is used nowadays to see in the night. Special goggles are designed to pick up infrared light making it possible to see at night. The next group of light waves are the shorter waves of ultraviolet and x-rays. Ultraviolet light, sometimes referred to as UV, is right next to violet and is just beyond sight. UV light is what causes sunburns and can be very painful. In Arthur C. Clarks essay it states that even though UV light is not visible the retina of the human eye reacts powerfully to it. He compare the human eye to a camera and says that a good camera need may types of lenses made out of different types of glass to take a good picture. The human eye has only one lens and cannot possible see UV light. The last type of light is the x-ray. The x-ray is the smallest wave and is used in the medical field greatly to take pictures through flesh of bones. Even though x-rays are very useful they can be very dangerous. They have been know to disrupt radio waves and can poison a human body to the point of death. In summary, the invisible lights can be broken down into large wavelength and short wavelength groups. The large wavelength group consists of radio waves and infrared light. Radio waves are sometimes volatile and infrared light is use to see at night among other things. The other set of invisible light, the short wavelength, include ultraviolet light and x-rays. Ultraviolet light is not visible but affects the retina in the human eye. X-rays are helpful in hospitals but are lethal in large quantities. Philosophy Essays