Saturday, October 5, 2019
Literature and Community Essay Example | Topics and Well Written Essays - 500 words - 1
Literature and Community - Essay Example Faulkner introduces Miss Emily Grierson as a woman who has been strictly contained within the boundaries of her fatherââ¬â¢s old Southern ideals. ââ¬Å"None of the young men were quite good enough to Miss Emily and such. We had long thought of them as a tableau; Miss Emily a slender figure in white in the background, her father a spraddled silhouette in the foreground, his back to her and clutching a horsewhip, the two of them framed by the back-flung front doorâ⬠(437). As a result of his behavior and her confinement, the Grierson family becomes the townââ¬â¢s idealized image of what the Old South should be. As a result, the town insists upon Emily maintaining this role even after her father dies and she is left all alone. Miss Emily attempts to break out of this mold by dating Homer Barron and adopting more Northern ideals. ââ¬Å"Her hair was cut short, making her look like a girl, with a vague resemblance to those angels in colored church windows ââ¬â sort of trag ic and sereneâ⬠(438), but the town sees her as defying the old order of her class. Her cousins are quickly sent for (by the townspeople) to bring Miss Emily back into her ââ¬Ëdestinedââ¬â¢ role. Franz Kafkaââ¬â¢s story ââ¬Å"Metamorphosisâ⬠centers on the character of Gregor Samsa who wakes up one morning to discover heââ¬â¢s been transformed into the shape of a large bug, possibly a cockroach, which reflects his position in society and the expectations they have for him. It can be argued that Gregorââ¬â¢s transformation is a literal indication of his feelings of separation from humanity, including the members of his own family. Despite waking up to find himself in the form of a bug, Gregorââ¬â¢s primary concern is to get to work so that he can still support his family as heââ¬â¢s been doing for five years. This is the expectation society has placed on him and he has adopted for himself. As he thinks about his condition, he realizes the level of disconnection that has already occurred between
Friday, October 4, 2019
World Views on theism Essay Example | Topics and Well Written Essays - 1500 words
World Views on theism - Essay Example Just as Hackett recounts, the absence of the divine Being immediately creates the limitations of cultural relativism. This is because, the notion that a divine Being exists and created the universe and the fullness thereof immediately gives room for moral absolutes or the universal law. Since a personal example suffices, living in America made me note that as globalization continues to render the US and the entire world a cultural melting pot because of multiculturalism, the danger of cultural relativism has certainly become inescapable. This danger has mainly manifested itself in a clash between legislative pieces and cultural values. For instance, because of the constant but radical shifting away from theism, the US government with all its constitutional maturity still remains ambivalent and unsure about the publication of literature such as Phillip R. Greaves IIââ¬â¢s The Pedophileââ¬â¢s Guide to Love and Pleasure, despite the risks it poses to children. Only theism can here by strike this delicate balance between freedom of speech and conscience and that of childrenââ¬â¢s safety.... The crux of the mater herein is that when stimuli are introduced, there must be a response, as a corresponding action. Personally, I readily identify with behaviorism because I have come to note that results or consequences shape individual or collective action. Action in turn develops into behavior. Particularly, I have come to note that most of my colleagues did not take their assignments seriously until lecturers set deadlines. Reflecting on my past life also reinforce my belief in behaviorism, since we worked hard in high school, mainly upon knowing that entry into college or university learning would be based only on merit. Learning Styles Personally, kinesthetic approaches to learning have proven the best and most fruitful. This is because, this approach proves to be the most practical since it involves learning by performing, and therefore incorporates hands-on approaches such as movements, observing and other physical activities. Alongside note-taking and ensuring physical co mfort, joining study groups, using appropriate technology such as visual aids and reviewing information have catalyzed learning. The foregoing has especially been the case during encounters with cognitive sciences such as linguistics. Particularly, it has been virtually impossible to master phonetics, the International Phonetic Alphabet (IPA chart), the phonological processes and supra-segmental features thereof, without looking at the mirror to watch the movement of articulators, or feeling the movements of my articulators, or both. In courses pertaining to political science, history and sociology, I have found it most benefiting to my memory when I place the world map before me, as a reference material. Likewise, as one given over to kinesthetic approach, I have found
Thursday, October 3, 2019
Industrial Revolution Essay Example for Free
Industrial Revolution Essay Industrial Revolution is regarded as a very important period in human development which occurred in the period towards the end of the 18th century stretching to the 19th century. Industrial revolution is said to have begun in the United Kingdom and later spread to other parts of the world including the rest of Europe, North America amongst other parts of the world. During this period there were major transformations in the agricultural sector, transportation, and manufacturing among other spheres of life. These changes were to have profound impacts on the social, economic, and cultural life of the people in Britain which was the cradle of the revolution. This paper shall examine the central ways in which the Industrial Revolution changed the western societies. Impacts of the Industrial Revolution The inception of the Revolution is regarded as a crucial turning point in the history of mankind as it led to alterations in virtually every aspect of life. The Revolution started towards the end of the 18th century when there was mechanization of the textile industry, emergence of new iron making skills, and an increase in the utilization of polished coal. There were improvements in the transport network which facilitated exchange of goods and services. Generally, a growth in various industries was witnessed and manual labor was replaced by mechanization which led to increased production . The textile industry was among the first to feel the impacts of the industrial revolution. The invention of the cotton gin in 1794 brought efficiency in separating of cotton seeds from fiber. The discovery of the sewing machine in 1846 further revolutionized the textile industry as the making of clothes moved from homes to industries. Apart from the impacts of the industrialization on the domestic industries, the revolution led to increased productivity in the farms due to mechanization of agriculture. With increased productivity in the farms, industries cropped up and individuals clustered in particular regions working in the industries or engaged in trade. This eventually led to the development of towns and cities . Advancement in technology during this period led to the growth of capitalism as the owners of the means of production grew richer. There was an increase in the economic growth which was due to the new technologies of the industrial revolution as seen in the doubling of the UKââ¬â¢s purchasing power and a rise in the total national income during the 19th to 20th century . The revolution also brought about changes in the countryââ¬â¢s political structures in Britain as capitalists begun replacing the land owners of the agrarian period to become influential in the countryââ¬â¢s economic and power structure. There were also alterations in the working conditions as factories provided the workers with poor working conditions. These included poor ventilations, overcrowding, child labor was on the rise, and individuals were poorly paid and worked under dangerous and unsafe environments . The laborers were paid less wages that led to development of slums since they could hardly afford decent housing. The workers were generally working under extreme conditions which forced the government of the day to pass legislations that would govern the interests of the workers. The workers also initiated efforts that resulted in the creation of trade unions which agitated for their interests . The Industrial Revolution also led to developments in the transport and communication sector. Several inventions led to the efficiency in this sector as road networks were improved, water transport boosted through the invention of steam engines, and communication made easier especially with the discovery of telegraphic machines. Railway transport was also developed and this eased the transport of bulk goods, products, and raw materials to the industries . Conclusion There is no doubt that industrial revolution was a defining moment in human history. There were great advancements and innovations that were aimed at making life more efficient at the same time increasing production. Though the revolution came up with its challenges, it remains to be a crucial part of human history as it totally revolutionized the world into a new order.
How Are Pistons Made Engineering Essay
How Are Pistons Made Engineering Essay There are different ways of doing the pistons and they all aims to achieve the lighter piston with least friction. Some of these are explained as follows: Cast piston is used for light-duty. The cast surface tells us this piston wont stand up to extremes of temperature and rpm because the molecular structure isnt as tight as it is with hypereutectic and forged pistons. Die-cast pistons are made by pouring molten aluminium into a mould. Then, the piston is machined into a finished product. Hypereutectic pistons are little more than a die-cast slug with a high silicone content. This makes the surfaces harder and shinier. It also changes the expansion properties, allowing you to run tighter piston-to-cylinder-wall clearances. You can run a hypereutectic piston a lot harder than you can a cast unit. The high-silicone content gives the hypereutectic a forged appearance. Note the huge valve relief for those Cleveland intake valves. Forged pistons are more involved, and, certainly, more expensive to make. Instead of a simple mould, we need a giant press, which rams the aluminium into a complex mould under high pressure. Machining forged pistons is no small feat. It is both time consuming and expensive. The forged piston advantage is greater strength, harder surfaces, more predictable expansion properties, and virtually no porosity. Another advantage to forged pistons is the ability to make them lighter and with less skirt. We can do this because forged pistons are stronger. We can machine more meat out of them without suffering structural losses. Forged pistons have a distinctive look, with an extra-hard surface and machining marks. These are what you go with when high rpm and high heat are expected. If youre running nitrous or supercharging, theyre mandatory. Piston technology has come a long way. Computer-aided design and CNC machining technology has made it possible to make custom pistons for just about any application you can think of. With this technology has come lighter pistons with less skirt that offer less friction. Piston Design: Piston design and shape greatly effect how an engine performs. When pistons are too heavy, we lose power. Design in too much skirt, and we lose power through excessive friction. Too little skirt, and the piston becomes unstable. Shoehorn in too much displacement, push the wrist pin into the ring grooves, and you have a formula for piston failure because this exerts too much heat on the pin and boss. In the dreamy world of piston science, we dream of the perfect pistonthe piston that creates very little friction (drag), weighs very little, carries just the right amount of oil up the cylinder walls, and provides a perfect cylinder seal. In the real world, it is nearly impossible to achieve all of these elements at once. http://www.mustangandfords.com/techarticles/mufp_0505_piston_fundamentals/piston_selection.html Piston Engine: A reciprocating engine, also often known as a piston engine, is a heat engine that uses one or more reciprocating pistons to convert pressure into a rotating motion. This article describes the common features of all types. The main types are: The internal combustion engine, used extensively in motor vehicles, The steam engine, the mainstay of the Industrial Revolution, The niche application Stirling engine. Piston Make: The current problem is that there are two pistons with failure; the author here is doing analysis and investigation on the tow pistons trying to find the root causes for this problem and how to avoid this to happen again next time. Those tow pistons are parts in a marine diesel engine made by a German company called MAN Diesel Turbo. MAN Diesel Turbo is one of the worlds leading suppliers in its various fields. From pleasure yacht engines to four-stroke engines for giant container ships, from emergency power unitsÃâà to turnkey diesel power plants, from single compressors and turbines to complete machine trains for various industrial applications. The engine for the piston is a marine engine with product number L20/27. In theory, diesel engines are internal combusÃâà tion engines designed to convert the chemical energy available in fuel into mechanical energy. This mechanical energy moves pistons up and down inside cylinders. The pistons are connected to a crankshaft, and the up-and-down motion of the pistons, known as linear motion, creates the rotary motion needed to turn the wheels of a car forward. Diesel engines covert fuel into energy through a series of small explosions or combustions. explosions happen In a diesel engine; the air is compressed first, and then the fuel is injected. Because air heats up when its compressed, the fuel ignites. The diesel engine uses a four-stroke combustion cycle . The four strokes are: Stroke 1 of 4 Suck: Intake stroke On the intake or induction stroke of the piston , the piston descends from the top of the cylinder to the bottom of the cylinder, reducing the pressure inside the cylinder. A mixture of fuel and air is forced by atmospheric (or greater) pressure into the cylinder through the intake port. The intake valve(s) then close. The intake valve opens up, letting in air and moving the piston down. Ãâà Stroke 2 of 4 Squeeze Compression stroke: With both intake and exhaust valves closed, the piston returns to the top of the cylinder compressing the fuel-air mixture. This is known as the compression stroke. The piston moves back up and compresses the air. Stroke 3 of 4 Bang Combustion stroke: While the piston is at or close to Top Dead Center, the compressed airà ¢Ã ¢Ã¢â¬Å¡Ã ¬fuel mixture is ignited, usually by a spark plug (for a gasoline or Otto cycle engine) or by the heat and pressure of compression (for a diesel cycle or compression ignition engine). The resulting massive pressure from the combustion of the compressed fuel-air mixture drives the piston back down toward bottom dead center with tremendous force. This is known as the power stroke, which is the main source of the engines torque and power. As the piston reaches the top, fuel is injected at just the right moment and ignited, forcing the piston back down. Stroke 4 of 4 Blow Exhaust stroke: During the exhaust stroke, the piston once again returns to top dead center while the exhaust valve is open. This action evacuates the products of combustion from the cylinder by pushing the spent fuel-air mixture through the exhaust valve(s). The piston moves back to the top, pushing out the exhaust created from the combustion out of the exhaust valve. Remember that the diesel engine has no spark plug, that it intakes air and compresses it, and that it then injects the fuel directly into the combustion chamber (direct injection). It is the heat of the compressed air that lights the fuel in a diesel engine. In the next section, well examine the diesel injection process. Lubrication cooling Medium-alkaline lube oils have proven to be suitable for lubricating the power train, the cylinders, the turbocharger and, if the facility is provided, for the cooling of the pistons. Such medium-alkaline lube oils contain additives which, amongst other things, provide them with a higher neutralization capability than is the case with blended (HD) oils. Basic oil The basic oil (medium-alkaline lube oil = basic oil + additives) must be a narrow distillation cut and must be refined according to modern methods. Bright stocks, if contained, must neither adversely affect the thermal nor the oxidation stability of the basic oil Medium-alkaline lube oil The basic oil with additives have been mixed (medium-alkaline lube oil) must demonstrate the following characteristics: The additives must be dissolved in the oil and must be of such a composition tat an absolute minimum of ash remains as residue after combustion, even if temporary operated on distillate fuel. That ash must be soft. If this prerequisite id not complied with, increased deposits are to be expected in the combustion chamber especially at the outlet valves and in the inlet housing of the turbochargers. Hard additive ash promotes pitting on the valve seats, as well as burnt-out valves and increased mechanical wear. Additives must not cause clogging of the filter elements, neither in their active nor in their exhausted state. The cleaning capacity must be so high that coke and tar-like residues occurring when fuel is combusted must not build-up. The dispersing capacity must selected such that commercially available lube oil cleaning equipment can remove the combustion deposits from the used oil, i.e. the used oil must possess good separation and filtration properties. The neutralization capacity (ASTM-D2896) must be so high that the acidic products which emanate during combustion are neutralized by the lube oil consumption of the engine. The reaction time of the additives must be matched to the process in the combustion chamber. The tendency to evaporate must be as low as possible, otherwise the oil consumption is adversely affected. The lube oil must not form a stable emulsion with water. The lube oil must not contain agents to improve viscosity index. The fresh oil must be free from water and other contaminants.
Wednesday, October 2, 2019
Calvinism Essays -- Religion, God
God takes great pleasure in the salvation of men (Lk. 15:4-7). It is His passion, and the sacrifice of His Son is the measure of it (Jo. 3:16; 1 Jo. 4:10). That He would offer His Son for some and not all misreads the divine concern for the lost (Mt. 23:37; Lk. 5:31,32; 15:1-7; 19:10). Scripture affirms that God has done and is doing all that He can wisely and righteously do to save men (Isa. 5:1-7; 53; Jo. 3:14-17; Ro. 3:24-26). It simply will not countenance the insidious notion that fewer saved is better, which is an unavoidable implication of Calvinist theology. Limiting the saving interest of God to some men only is a troubling feature of Calvinism and should concern all who share God's passion for the lost. Hence, the dispute between limited and unlimited atonement is no small matter, as the atonement controversies in the past have shown. That God has unconditionally assigned some to salvation and some to damnation, either before or after the fall, finds no sanction in Scripture. Yet Calvinists say God has either limited the work of Christ to a select few or has limited the Spirit's application of Christ's work to a select few. In either case they limit the atonement unconditionally. Scripture says God wills the salvation of all men (1 Tim. 2:4-6; 2 Pet. 3:9) and that He has provided for all. "All things are ready" (Mt. 22:4). When it comes to salvation, He stands in the same relation to all men. He is the Creator of all (Jo. 1:1-3; Col. 1:16) and the Saviour of all (Jo. 4:42). To say He has undertaken for some and not for all is the voice of limitarian theology and not Scripture. In taking our nature (Heb. 2:14-18)), Christ provided an atonement for all who wear it. He died for every man in particular (Heb. 2:9; 1 Jo.... ...ll address later). They cannot conceive of God's operating on a generous margin, of His making a provision for more than actually enjoy it. Over the years Calvinists have struggled to give their system a friendlier face, a more congenial and universal look. One plan has been to say the atonement is sufficient for all but only efficient for the elect. However, such "universality" is merely theoretical and does not make the non elect any more savable. In this scheme, the atonement is sufficient for all in the sense that, had God intended to save all men, Christ's death would have been sufficient to do so. However, since He never intended to save all, He never included the sins of all in the cross. Thus the atonement is sufficient (theoretically able) to save all but efficient (that is, actually saving) for the elect only because only elect's sins were atoned for. Calvinism Essays -- Religion, God God takes great pleasure in the salvation of men (Lk. 15:4-7). It is His passion, and the sacrifice of His Son is the measure of it (Jo. 3:16; 1 Jo. 4:10). That He would offer His Son for some and not all misreads the divine concern for the lost (Mt. 23:37; Lk. 5:31,32; 15:1-7; 19:10). Scripture affirms that God has done and is doing all that He can wisely and righteously do to save men (Isa. 5:1-7; 53; Jo. 3:14-17; Ro. 3:24-26). It simply will not countenance the insidious notion that fewer saved is better, which is an unavoidable implication of Calvinist theology. Limiting the saving interest of God to some men only is a troubling feature of Calvinism and should concern all who share God's passion for the lost. Hence, the dispute between limited and unlimited atonement is no small matter, as the atonement controversies in the past have shown. That God has unconditionally assigned some to salvation and some to damnation, either before or after the fall, finds no sanction in Scripture. Yet Calvinists say God has either limited the work of Christ to a select few or has limited the Spirit's application of Christ's work to a select few. In either case they limit the atonement unconditionally. Scripture says God wills the salvation of all men (1 Tim. 2:4-6; 2 Pet. 3:9) and that He has provided for all. "All things are ready" (Mt. 22:4). When it comes to salvation, He stands in the same relation to all men. He is the Creator of all (Jo. 1:1-3; Col. 1:16) and the Saviour of all (Jo. 4:42). To say He has undertaken for some and not for all is the voice of limitarian theology and not Scripture. In taking our nature (Heb. 2:14-18)), Christ provided an atonement for all who wear it. He died for every man in particular (Heb. 2:9; 1 Jo.... ...ll address later). They cannot conceive of God's operating on a generous margin, of His making a provision for more than actually enjoy it. Over the years Calvinists have struggled to give their system a friendlier face, a more congenial and universal look. One plan has been to say the atonement is sufficient for all but only efficient for the elect. However, such "universality" is merely theoretical and does not make the non elect any more savable. In this scheme, the atonement is sufficient for all in the sense that, had God intended to save all men, Christ's death would have been sufficient to do so. However, since He never intended to save all, He never included the sins of all in the cross. Thus the atonement is sufficient (theoretically able) to save all but efficient (that is, actually saving) for the elect only because only elect's sins were atoned for.
Tuesday, October 1, 2019
Sports Narrative - Wrestling :: Personal Narrative Essays
Personal Narrative- Wrestling CLAP, CLAP, CLAP, CLAP, echoes through my head as I walk to the middle of the mat. "At 160lbs Aidan Conner of La Junta vs. Rodney Jones of Hotchkiss." All I can think of is every bead of sweat, every drip of blood, every mile, every push up, every tear. Why? All of this: just to be victorious. All in preparation for one match, six minutes. For some these six minutes may only be a glimpse, and then again for some it may be the biggest six minutes of their life. Many get the chance to experience it more than once. Some may work harder and want it more than others, but they may never get the chance. All they get is a moral victory. Every kid, every man comes into the tournament with a goal. For some is to win, for some is to place, others are just happy to qualify. These six minutes come on a cold frigid night in February at a place called the Pepsi Center. Once a year this gathering takes place when the small and the large, the best of the best, come to compete in front thousands of people. I am at the Colorado State Wrestling Championships. Ever since the previous season I had my standards set high. I had placed fifth, which was all right for the time being, but I knew as time went on I needed to push myself and increase my level of wrestling. I decided that I would do whatever it took, through thick and thin. I traveled to small local tournaments in Colorado, and a couple out-of-state tournaments, I even traveled to Delaware. It didn't really matter how I did at these tournaments because it was just all practice until February. So, I lifted and wrestled just about every chance I got. It was all in preparation for one match, six minutes. Starting the season as the second ranked wrestler in the state, I was just where I wanted to be, noticed, but not the "top dog". I did well during the season; not losing to anybody in the 3A classification. I didn't do quite what I wanted, but I wasn't going to complain. A broken hand after the second weekend of competition didn't help any, but I fought through it and kept my eyes set on one opponent, one goal, one match, six minutes.
General Educational Development Questions Essay
1.Why are dogs mans best friends? Dogs are called mans best friend for many reasons. For hundreds of years, dogs have been friendly, loyal and protective of their human owners. For just as many years, dogs have accepted the love and affection of humans and have been greeting them with a wag of the tail all this time. A dog still wants to be your buddy and play with you even if youââ¬â¢re in a bad mood or havenââ¬â¢t spent much time with him recently. They donââ¬â¢t judge us for things like that, they just keep wagging.All a dog wants is to be loved and loved back. 2. Why are Hurricanes Dangerous? Hurricanes are considered to be very dangerous because they are deadly and are formed from strong tropical storms. When hurricanes happen, they result in heavy rains and strong winds that can sweep humans, buildings and livestock, cause inland flooding, marine hazards and even tornadoes. With that combination, they inflict widespread destruction and can result in a large loss of life. 3. Is addiction a disease.? ââ¬Å"Addiction is a primary, chronic disease of brain reward, motivation, memory and related circuitry. Dysfunction in these circuits leads to characteristic biological, psychological, social and spiritual manifestations. This is reflected in an individual pathologically pursuing reward and/or relief by substance use and other behaviors.Addiction is characterized by inability to consistently abstain, impairment in behavioral control, craving, diminished recognition of significant problems with oneââ¬â¢s behaviors and interpersonal relationships, and a dysfunctional emotional response. Like other chronic diseases, addiction often involves cycles of relapse and remission. Without treatment or engagement in recovery activities, addiction is progressive and can result in disability or premature death [emphasis added].â⬠4.Why is getting my diploma important.?à A high school diploma is important to my future, because college admissions counselors and potential employers usually wonââ¬â¢t consider you unless you have one. If I were to get a high school diploma and not need it, not much would have been lost. However, if I were to not get a high school diploma and then end up in a situation in which I needed it, I would be in a bad position. Even people who decide to open their own business might need business classes, meaning they would likely need to be accepted by a college or university, therefore having to present a high school diploma. It seems like many employers and facilities of higher education are willing to accept a GED in place of a high school diploma, but not all of them are. In addition, in order to pass my GED, I should have knowledge of things learned in high school. So it makes sense to stick it out and get the diploma. 5. Why you like or dislike Miami.? I like it because itââ¬â¢s nice and warm with beaches, and because itââ¬â¢s the ââ¬Å"Spanish Hollywoodâ⬠of the United States. I dislike it because of the streets that tend to get dirty, but overall theyââ¬â¢re fine. 6. Reasons why Math is important. Math is hugely important. Pretty much everything you do involves math. All careers invlove some type of math and even if you donââ¬â¢t have a career you still use math everyday. Think about how many times a day you estimate something or figure out some type of math problem. You do use math whether you realize it or not. Some jobs like an artist might not catch people as a math job but you have to add up totals of money in order to sell your art, or even when etimating paint utencils and other stuff. 7. Why is your best friend so special.? My mother is my best friend, iââ¬â¢ve known her all my life. Sheââ¬â¢s the only person I know that will listen to me, not judge, offer honest and real advice without having other motives. Sheââ¬â¢s just like me but weââ¬â¢re different in so many ways. I feel so blessed to have a best friend who is actually family. We can share everything from clothes, to purses, to hair items and know weââ¬â¢ll get it back lol.! I feel so blessed to have someone so wonderful in my life. The special for me is that I always gonna have her and her pure love. 8. Why is Tanning in the sun Dangerous.? Some people think having a tan gives them a ââ¬Å"healthy glow.â⬠But a tan really shows that the skin is trying to protect itself from sun damage. Sun damage can lead to premature aging (wrinkles!), eye damage and skin cancer. Even ââ¬Å"indoor tanningâ⬠is not without risk. Tanning beds and lamps can expose you to even more harmful ultraviolet light than the sun does. And tanning products such as ââ¬Å"self-tanners,â⬠sunless sprays and pills can expose you to additional risks, according to the Food and Drug Administration. Before you try to get a tan, you should learn how and why our skin tans. When a type of radiation is exposed to the skin, the skin responds by producing melanin. Melanin is a dark substance that helps prevent the body from taking in too many harmful sun rays that can damage skin. The sun produces two kinds of rays, UVA and UVB. UVB rays are around all year and UVA rays are mostly present only during the summer. UVA rays are regarded as ââ¬Å"saferâ⬠and they cause the skin to age, while UVB rays cause the skin to burn. However, both of these types of rays are harmful and dangerous in large quantities. Overexposure to the sun can cause sunburn and even skin cancer.
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