History of Western Art Essay Example | Topics and Well Written Essays - 1250 words

History of Western Art - Essay Example athedrals, the traditional basilican form which has a central nave flanked with by a twin tower in its exterior an an entrance adored with lavish structures and stained glass window. This era of architecture developed in four stages: early gothic, lancet gothic, rayonnant gothic and late gothic. In early gothic, the use of pointed vaults like in the Notre Dame of Paris developed. Pointed arches evident in the Bourges Cathedral developed during the Lancet period while in the rayonnant era, structures where usually made of glass with a thin skeletal masonry frame. An example is the Saint Chapelle of Paris. The late gothic style is also known as the flamboyant style because of its form of suggesting flames in their structure. An example of this is the Church of Saint Maclou in France. Gothic architecture also spread out of France to other European countries like Italy, Germany and England. The Milan Cathedral in Italy is a perfect example of this style where it is of a classical basis characterized of a vast span and simple arches. In Germany, gothic structures are evident in the Cologne Cathedral which is built on bricks rather than stone. Their style is greatly influenced by France’s gothic structures. The structures in England were subdivided into three stages that is the early English, the decorated style and the perpendicular style. The English style developed in the 12th to the 13th century and is influenced by the Norman architecture. An example of this is the Lincoln Cathedral and the Salisbury Cathedral. The decorated style flourished during the 13th to the 14th century while the perpendicular style developed in the 14th to the 16th century was predominated with vertical lines. A perfect sample is the cathedral located in Gloucester and the King’s College Chapel in Cambridge. Synthesizing, gothic architecture has three distinctive characteristics that are structures with pointed arches, flying buttresses and ribbed vaults that help support the ceiling

Movies and Television Shows Should Include Better Role Models for Their Audiences Essay Example for Free

Movies and Television Shows Should Include Better Role Models for Their Audiences Essay I’m sure it has happened plenty of times. When you finish watching a movie and afterwards feel so inspired. This is often when the movie hero was presented as someone we would like to be or has a personality that we admire. Sometimes it can be other characters that are shown to be â€Å"cool†, attractive, and popular that also inspires us to mimic their personality traits. Movies can also prompt us to try certain activities. Of course this can be seen as the beneficial side of media; the fact that there could be that one movie that has the power to influence someone to become a better person. But like almost everything, there’s a downside to it too. The fact that media can be convincing in positive ways suggests that it can equally convey negative messages as well. The way that movies or television shows portray their characters is something that definitely needs to be paid attention to. The rebellious heroes, senseless social statuses, and unhealthy activities characters engage in are all factors that will influence the audience. Therefore it is important to consider whether it is worth presenting the characters in this way. A large majority of movies are presenting their characters as bad people, yet the people that anyone would find themselves wanting to be. I believe that is wrong, thus movies and TV shows should include better role models for their audiences. Current movies portray violence without consequence, inaccurate representations of social statuses and social interaction, and encourage characters to engage in activities with more harm than good. Many of the heroes in movies happen to be quite rebellious and are often involved in violence. It’s usually the fact that they’re so involved in violence that helps them obtain their cool, heroic status. The characters we see as role models are always showing that violence can be used as a quick fix for conflicts to avoid negative consequences. K. A. Earles states, â€Å"This depiction of violence increases the probability that violence will be one of the first strategies chosen by a child. † Bandura, a professor in psychology at Stanford University demonstrated that preschoolers learn aggressive behavior by watching television. Three groups of children were shown a film n which a man commands a human-sized doll to move, and when it did not he hit the doll with his fists, a mallet, and then rubber balls. In other words, he used violence as an immediate strategy. Group one saw the man rewarded. Group two saw the episode end without reward or punishment. Group three saw the actor receive a verbal lecture. After watching the film, the children in groups one a nd two were seen to behave more aggressively than the ones in group three. This proves that the consequences characters find themselves facing has quite a strong impact on how the audience will act. What encourages violence even more is that it is often carried out by the hero in the story line who is then rewarded for his/her endorsement in violence. â€Å"Such constant exposure to portrayals of physical violence, some of which viewers do not even recognize as violent, may dull a child’s aversion to this behavior. † says K. A. Earles. Reenactments of national worldwide disasters such as terrorism scenes or brutal wars are one thing. But for a fictional superhero to battle and beat his â€Å"enemies† with realistic and bloody dramatizations is not a good way to entertain kids. There aren’t many positive or useful characteristics of the role model heroes for the children to gain besides their â€Å"charismatic† and â€Å"brave† personalities but they express these lovely character traits through violence. They care for the ones who are in danger so they save them with violence. As they stand up to their enemy and begin to battle them they show out their bravery. These heroes are showing young boys that if you are not strong enough, not brave enough to endorse in a physical fight then you are not capable to be someone as amazing and powerful as they are. Physical strength is spotlighted while intellectual strength is forgotten. Sharon Lamb, a professor of mental health at University of Massachusetts-Boston surveyed 674 boys aged 4 to 18 to analyze marketing trends for action figures and movies. This resulted in violence, emotional aloofness, and general hyper-masculinity being the main messages directors of these movies are promoting to young boys. This shows us that there aren’t many useful or healthy things these movies are promoting to their audiences. This only leads me to conclude that directors need to think over the way they are presenting their heroes. Violence is not the only existing strategy. As well as action movies, there are the modern teenage soap operas. I’ve noticed that these programs have a distorted portrayal of the theoretically existing teenage social statuses. There are always the good people and the bad people, the â€Å"cool† people and the â€Å"lame† ones. Although most television programs are to entertain, having a message or lesson for the audience to gain is also important. As mentioned earlier, the way the characters are portrayed is very significant to the audience since they are what influence the audience. There are the more obvious heroes which are the supermen in action movies but the less spotlighted ones in calmer, closer-to-reality programs. In these kinds of films, the â€Å"hero† would be a character the audience finds themselves admiring and looking up to. This depends on the way the characters in the film are presented. A person who our society would admire and want to be has very precise but general character traits; a confident, rich, bossy girl who has an attractive appearance and good leadership skills. It’s practically the same for boys. Society’s image of a picture perfect female or male is neglecting the many other personality traits of a human being that makes them a good and interesting person. Movies present the â€Å"popular guy† typically as someone who is necessarily good at sports for instance, and send the message to younger boys that if they are not good at sports they can’t expect to be at the top of the theoretical social scale regardless of other good qualities they can have. The same goes for girls. These films portray the â€Å"popular† girls as girls who are very narrowed down in their interests. Female adolescents are portrayed as being obsessed with their appearance. † Smart people are shown to be socially unaccepted. â€Å"Intellects are frequently viewed as social misfits. † These movies are encouraging and strengthening society’s distorted image of who the â€Å"popular† kids should be and contribute to a very inaccurate picture of what social interaction and social status is built on in reality. Young girls or boys may start to think that if they are not what the â€Å"cool kids† are presented as in movies, then they will not be successful or liked. This is definitely not the kind of message that should be sent to the younger generations. Lastly, quite a few of the activities characters in movies or TV shows engage in are not healthy and do not set good examples for young teens. The usage of alcohol and drugs is always by the cool, popular kids who will then convince the kids and teens a part of their audience to try them at one point. â€Å"Social Learning Theory suggests that children learn by watching, imitating, and assimilating. † This only proves that the majority of the children that are exposed to media that is practically encouraging alcohol and drug usage will most likely try it in attempt to imitate their role models. Movies propel the idea of these bad habits being â€Å"cool†. With teenagers picking up their first cigarette as early as 14 years of age, evidently there’s a problem. As many parents and adults may have noticed, kids/teens are beginning to have a distorted idea of what sex is all about and media may be the main cause for their way of thinking. Many movies and shows portray it as a normal thing to indulge in, therefore teens are enacting what they see from the media and often end up being pregnant or contracting a sexually transmitted disease. A study was done on 75 girls in which half were pregnant. It was found that the pregnant girls watched more soap operas than the non-pregnant girls and were found more surprised when told that their favorite soap opera characters used any sex protection. According to the National Survey of Children, males who watched more television were found to be more sexually active than the ones who watched less television. â€Å"Television may be a significant contributor to the sexual practices and attitudes of young people. † All of these things may be a part of a movie to show what it’s like out there but there must be some sort of proof of it being a bad thing to no give out the wrong message. Having characters in movies continuously smoking cigarettes and never even considering the consequences of having sex may influence kids in a completely wrong way. All of these reasons strongly suggest that the role models portrayed in movies and television shows can influence the younger audiences in negative ways. If teenagers are continuously exposed to such behaviors their minds will adjust to thinking in a certain way and no matter how hard their loved ones will afterwards try to convince them that these activities are wrong, that these behaviors are wrong, they will not be capable of changing their minds. Dear parents, are you okay with your 14 year old daughter already indulging in sexual activity, and your 15 year old son reacting violently and aggressively to any confrontations? Dear world, do you believe it’s acceptable for young girls to stress about their appearance and feel bad about themselves simply because of the way they look? For boys to believe that sports are what they are bound to engage in to be liked? Directors of movies should start to think how to get society to think differently, rather than encourage its shallow beliefs. Fighting scenes should not be the only entertaining scenes for kids. More creative ways of how to entertain children in a positive way could be thought of. The modern teenage popular kids should all have different interests and be liked for who they are and not what they look like. Pathetic assumptions and senseless social statuses in general should be presented in a brighter way in programs. Unhealthy activities should be portrayed as the bad things to do rather than the â€Å"cool† things. Kids will follow their role models, and if they’re role models are doing good things, it’s likely they will too.

The Great Railroad Strike Essay -- American History

The Great Railroad Strike In the first half of the 19th Century the working class in the newly industrializing American society suffered many forms of exploitation. The working class of the mid-nineteenth century, with constant oppression by the capitalist and by the division between class, race, and ethnicity, made it difficult to form solidarity. After years of oppression and exploitation by the ruling class, the working class struck back and briefly paralyzed American commerce. The strike, which only lasted a few weeks, was the spark needed to ignite a national revolt by the working class with the most violent labor upheavals of the century. Railroads were the big business of the mid-nineteenth century. The rail companies employed thousands of people and ran operations nationwide. The railroad transformed American society from a rural, agrarian society to an urban, industrialized one. The railroads contributed to an economic boom which pulled millions of peasant immigrants from southern and eastern Europe in search of job opportunities and a better life. However, this same industry took advantage of a vast labor surplus and exploited its workers. A record number of immigrants were admitted into the U.S. during the mid-nineteenth century. Attracted mainly by job opportunities and cheap passage from all corners of southern and eastern Europe, a wave of immigrants flooded the American economy. This mass immigration created a labor surplus which produced a marketplace where workers could be hired and fired at will and had to sell their labor for whatever the going rate; labor had become a commodity. Adding to the surplus in available labor was the boom-bust cycle. The depression of 1873 undermined the position of many worke... ...ctuals to the conditions laborers faced. This would lead to the progressive movement at the start of the twentieth century. The railroad was America's first big business. It pulled people from farm labor and individual proprietors to working for wages for a large corporation. Workers were now being treated as a commodity. They were exploited to keep corporate dividends high during an economic bust cycle. In an attempt to stand up to big business small craft unions began to form but they represented a very small segment of the working class. Strike power seemed the only chance to fight backÂâ€"to take a stand for a minimal life-balance. Though the strikes themselves did little to improve things, it brought national attention to the varying middle class as to their labor conditions. This national attention would help launch a new reform movement called progressivism.

Investigation of the Polar Dinosaur Essays -- Exploratory Essays Resea

Investigation of the Polar Dinosaur Today we know through the evidence of fossils that dinosaur and other large reptiles once lived on every continent on earth. If you were a paleontologist in charge of finding fossils where would you look first? In the search for evidence the icy continent of Antarctica would be perhaps the last continent you would think to search. However, during the last twenty years a remarkable number of prehistoric fossils have been found in regions close to the South Pole. Beginning in 1960 with an expedition lead by a man named Spitzbergen, fossilized footprints from non-avian dinosaur showed the region once had a drastically different climate. In the years that followed more fossilized remains were collected in costly expeditions, often to remote areas near the north and South Pole. However, each find can present unique information about physiological adaptations various forms of life made to polar latitude temperatures during the Mesozoic era. An article â€Å"Polar Dinosaurs† by Thomas H. Rich in Science, published in February of 2002, explores the fossil evidence and presents the following ideas about the environment and the types of creatures who lived and adapted to the seasonal conditions present at these polar latitudes. The ice fields of the North Slope of Alaska we know today are thought to have had temperatures ranging from 13-2 degrees Celsius during the Cretaceous period. This hypothesis is based on evidence from flowering plants, and leaf fossils found from the late Cretaceous found in the region. So life around the poles existed in a climate similar to that of Portland, Oregon, which has a mean temperature of 12 degrees, and may have gotten as cold as Alberta Canada’s average of ... ...uld have probably been impossible for life in the Antarctic where a large seaway eventually developed cutting southeastern Australia from Antarctica. The investigation of polar dinosaurs continues with the excavation of a new site in northern Alaska near the Colville River. Paleontologists have discovered a huge, 100 km, slab of rock that spans the last 40 million years of the Mesozoic era. Exploration of this site through tunneling is believed to present a more extensive record of polar dinosaurs as they were over the Jurassic and Cretaceous periods. (1) Works Cited 1) Rich, T.H., P. Vickers-Rich & R.A. Gangloff, February 2002, Polar Dinosaurs. Science 295:979-980. 2) Mayell, Hillary, Researchers Melt Polar Dinosaur Mysteries, National Geographic, Febuary 2002, http://news.nationalgeographic.com/news/2002/02/0225_0225_polardinos.html

What Effects the Bounce of a Dropped Ball

Aim The aim of this experiment is to investigate the efficiency of a bouncing ball, and the factors which affect its efficiency. Hypothesis If I increase the height from which a ball is dropped, then the bounce height will increase because it will increase the speed and create a larger impact, causing the ball to bounce higher then dropping it from a lower height. Materials 1. High bounce ball 2. Measuring tape 3. Tape 4. Wall Risk AssessmentH- Cutting yourself with the measuring tape C- Handle with care and ensure that it is locked Method 1. Hold the measuring tape with the 0 centimeter end on the floor. Then tape the measuring tape to a wall. 2. Hold the bottom of the high bounce ball in place with the 100 centimeter mark on the measuring tape. 3. Drop the ball and determine the total bounce height of the ball, which would be the distance from the surface to the bottom of the ball at the top of its bounce. . Continue till you have data for 3 tests. 5. Repeat steps 2-5 for drop heig hts 80 cm 60 cm 40 cm 6. Average all the data. Variables Independent variable = drop height Dependent variable = bounce height Controlled variables = ball, surface, measuring tool Data Table Height a Ball Bounced From Different Drop Heights DROP HEIGHT (CM) TEST 1TEST 2TEST 3AVERAGE 10050495150 8038394039 6031293030 4022202120 Graph

Review of Nuclear Battery Technology Essay

Review of Nuclear Battery Technology Essay Review of Nuclear Battery Technology Essay Example Review of Nuclear Battery Technology Essay Example The Role of Nuclear Battery for Smartphones In smart phones, batteries play a major role in providing power. Scientists as well as technology firms are continually looking for means to better the life of these batteries and their efficiency. The University of Missouri lately came up with a more efficient nuclear battery that is long lasting. This battery is capable of running several applications including a space flight. They also act as a reliable energy source in automobiles. Search for alternative sources of energy has made scientists indulge in extensive research in almost all fields to gather information on how to tackle the challenge of battery life of batteries used in various devices such as phones and laptops and come up with ones that are more efficient than the existing chemical batteries. The basic idea the researchers have been developing is that instead of consuming or utilizing the power in a battery`s chemical gradient, for instant in Lithium batteries, to employ the energy emitted by the decaying of isotopes of radioactive elements in a natural manner to generate energy. These batteries are referred to as nuclear batteries. Problem definition Nuclear batteries in smartphones emit radiation and in case of a leakage they can cause cancer and even death. For example, the gamma rays which have intense, penetrating power can only be checked with the introduction of a large lead lump; otherwise, cancer is inevitable. The casing is done to reduce radiation in smartphones, and it is done using the materials mentioned. Another possible disadvantage (though it is not common) is that terrorists may use the Strontium-90 to develop dirty bombs even though the substance is very expensive. Radiation protection principles presume that any radiation dose, no matter how small it might seem to be, can harm a person. Nuclear batteries are lighter than other ones, however, they can provide energy for smartphones, and they are much smaller in size as well as more efficient as other batteries. Nuclear batteries also have sufficient energy density. The radioisotope that is an example of nuclear energy can supply energy density that is approximately six orders of magnitude more than the batteries manufactured using chemical substances. Betavoltaic chipsets that are also nuclear batteries are commercially available and are of high demand due to low voltage. They are also amp products for the niche markets such as the military. Betavoltaic batteries generate power from beta radiations rather than photons. These beta radiations are high power electrons emitted by radioactive elements. Several commercial uses of nuclear technologies exist today, for example, fire control detectors and emergency exits in many buildings. Lithium-ion batteries have an aging problem, which becomes evident one year after the purchase and the manufacturers always go silent about this. It always happens whether the battery is in use or kept idle. Another disadvantage of lithium-ion batteries is that they are regarded as not completely mature since the chemicals and metals vary on a continuous basis. They need a protection circuit to preserve the voltage as well as the current within some safe limits . Natural Li is converted into isotopic clear 6Li. The merits of performing this task are the fact that thermal neutron combination of the cross-section is multiple of magnitude order larger than the natural Li cross-section implying that researchers can evaluate factual manufacturing methods and techniques. Functional requirements Terms such as atomic battery, nuclear battery and radioisotope and tritium generator are employed to depict devices that use energy produced from decaying of the radioactive isotope to generate electricity. Conversion method is divided into thermal and non-thermal one. Thermal converters consist of the thermionic and thermoelectric kinds of generators. Their output energy is always a function of a temperature difference. Non-thermal converters output of power is not a function of a temperature difference. It extracts a portion of power as it is degraded into the heat energy instead of using the thermal power to run electrons in the circle. Atomic batteries in most cases have an efficiency of between 0.1 to 5%. High efficiency beta voltaics have an efficiency of 6-8%. Thermal converters are classified into a thermionic converter that includes a hot electrode that emits electrons in a thermionic manner over a potential power barrier to a relatively cool form of an electrode and produce valuable electric energy output. Cesium vapor is employed to highly optimize electrode task function as well as present an ion supply to make sure the electron space charge has been neutralized. Beta voltaic is a battery that generates energy from radiation and scientists have studied the battery since 1950 and regard it as a major source of nuclear energy. Day to day research is being pursued on nuclear batteries in various research institutions. Much of this task is centered on making the frontiers of these nuclear device technologies by using energy sources with the help of beta or alpha particle decay, which is based on the radioactive isotope emitted. The area of the beta voltaic, which is the most tackled by the researchers, is tritium. This is a hydrogen isotope that has a pair of neutrons and a single proton as well as electron inherent in its hydrogen form. It is a radioactive isotope with a half-life of 12.32 years during which it emits beta particle that is basically an electron. This makes it more preferred over other known solutions that emit dangerous gamma radiations . There are several other advantages of tritium like its weight; it is arguably the third lightest among the existing isotopes. It also has properties and reactivity similar to those of hydrogen. Researchers are well conversant with its production path, and they are also quite aware of its hazards. A specimen of Highly-Oriented Pyrolytic Graphite (HOPG) that is intercalated with some lithium so as to check loading before irradiation occurs. Nuclear energy sources when controlled arent inherently dangerous. These nuclear batteries employ radioactive isotopes referred to as strontium-90. The latter improves the electrochemical power in water-based solutions. An electrode consisting of nanostructured titanium dioxide and a coating made of platinum is responsible for converting the energy or the power into electrons . The water operates as a buffer. Surface Plasmon developed in the device emerges as a useful component since it improves the batterys efficiency. The Ionic solution, however, cannot be easily frozen at minimal temperatures. It could efficiently perform in a variety of applications, for instance, car batteries. Constructing a betavoltaic device, a silicon material inside two electrodes is wedged. By the time the radiation strikes the semiconductor there is a production of electrons flow, simply referred to as voltage electricity. Unfortunately, ancient materials were less suitable for enormous stacked arrays since the volume and the mass of the battery being developed would be large. Thinner and relatively lighter collectors and emitters were required for designing an array. Of late, developments in graphene are still to be correctly integrated into the architecture of this betavoltaic. When correct integration into these thin stacked kinds of betavoltaic arrays is completed, a wider utilization and efficient performance would be experienced. It is possible that betavoltaic energy can generate more power as compared to chemical batteries. The anticipated maximum efficiency of promethium and tritium batteries is 21% and 12% respectively. Factors leading to these efficiencies are the source construction and the secondary electron discharge as well as backscattering mainly from the collector. Experimentally, it was demonstrated that the efficiency of the tritium direct charge battery model with vacuum dielectrics and collectors with secondary electron emission suppression and backscattering coating reached 5.5%. This kind of battery has an activity of curies of approximately 108. The experiment also demonstrated a voltage of 5300 volts with short circuit current of 148 nanoamperes. However, the efficiency can be doubled with a double-sided source. A promethium-147 nuclear battery has an activity of above 2.6 curies. The experiment shows it generates a voltage of 60kv. The current for the short circuit is 6.0 nano-amperes reaching an efficiency of 15%. The effect of charge accumulation in dielectrics under mono-energetic electron beam irradiation was used for developing nuclear batteries. In this battery, the charge accumulated on the surface conducts electric current through an uncharged dielectric. A nuclear battery was fabricated and tested with a tritium source; taking into consideration that a dielectric layer is wider than the range of tritium beta elements and a metal collector is without a vacuum space, this model generated 0.4 microwatts of electricity. Natural radioactivity emits radiation that generates energy. Nuclear batteries also known as atomic batteries harness the energy. The power density of the final product and the application domains depend on a material employed to generate that energy. On the other hand, the output and the potential efficiency of the battery depend on the form of conversion employed. Thermal converter, that is a radioisotope generator, utilizes the thermal energy produced by radioisotope decay to generate electricity. Methods used for this process include thermocouple heating, a recognized charge accumulation effect found in the dielectrics. The nuclear batteries developed at the Missouri University consist of a platinum-coated titanium dioxide electrode that was with. Water was also incorporated in addition to radioactive strontium-90. Sr-90 can decay radioactively with 28.79 years half-life. It generates an electron referred to as beta radiation; it also produces anti-neutrino as well as the isotope yttrium-90. This Y-90 has a half-life of 65 hours. This causes decay of additional electrons and anti-neutrinos. Stable Zirconium is also generated as a result of the decay. The wisest aspect of employing Sr-90 as a source of energy is the fact that it emits less or zero gamma radiations. Nuclear batteries are safe to handle and also very easy to use. Apart from being used in smartphones they are used extensively in health departments, for example, for cancer radiotherapy . Design concept Safety of radioactive substance is ensured by introducing an aluminum material between a human body part and the source of the rays. Thus, the safety of betavoltaic is checked in this way to avoid damage to people. One of the greatest advantages of nuclear batteries in smartphones is the fact that recharging will not be done as in the case with chemical batteries. As mentioned above, nuclear batteries with efficient packaging possess an energy density that is greater than in chemical ones. Additionally, the radioactive isotopes used to develop nuclear batteries are easily available at affordable market prices. Nuclear cells have a life span not less than ten years. This is an overwhelming term as they supply energy to equipment non-stop. Thus, the reliability and the longevity incorporated together may suffice a minor power needs for a decade. However, radiation safety standards need to be met. Incorporation of safety measures to ensure nuclear batteries are safe to handle. Devices, like smartphones batteries emit nuclear radiation that includes beta and gamma ray beams. This radiation is however kept in closed packages. Individuals worry that tritium in these batteries may diffuse due to the small size of the package and its mobility. They fear that it could diffuse through graphitic matrix, due to the complicated process of covering it . The worry for this is counterattacked by the fact that it is experimentally proven that the radiation would remain in the matrix as long as the temperatures remain below 627 degrees Celsius. The operating environment temperature that people live in is far much below this limit. The remaining challenge is the moisture. Nevertheless, the scientists are making use of a robust, hermetically fastened package. In less than three years to come, research companies, if funded adequately, will produce nuclear powered devices for general market. On this time framework, though, the researchers argue that it would depend on the regulatory framework. The addition of water was arguably the breakthrough of these batteries since that water can absorb a great amount of beta radiation since when in large quantities it can detriment to a betavoltaic semiconductor. However, beta radiation rips apart the molecules of water, generating free radicals as well as electricity. Comparative study with previous concept The cost of developing these nuclear batteries is relatively high. As for the case of most innovations, the starting cost is rather huge. However, as the innovation goes operational, these drawbacks varnish as the product is produced in bulk. Nuclear batteries for some specific applications like the size of laptop batteries may lead to some problems though it can be eliminated as time progresses; for instance the Xcel in laptops batteries is much more compared to the conventional one. Prospective commercial application of nuclear batteries in smartphones The aerospace firms would welcome smartphones recharging themselves. Oil and the gas companies are also potential commercial markets for the nuclear batteries due to their recharging factor. All these companies require some reliable energy sources in physical extremes for instant low temperatures and low pressure . The betavoltaic battery integrated into a flight data detector may signal to the searching squad for years rather than months. The odds of coming up with a commercially viable substance are reasonably perfect since the ultra-thin kind of collectors exists anyway. There is a growing global interest in the development of these thin beta-electron kinds of emitters. Applications Nuclear batteries are used widely due to their long life capability and high efficiency. This sort of innovation will undoubtedly change the current technology for the better and eliminate the power limitations brought about by chemical cells. In space applications, nuclear energy units are more significant as compared to the solar cells and the ordinary chemical batteries. Solar cells are easily destroyed when passing through radiation areas. The second reason is that the operations on planets such as Mars and the moon, where long phases of darkness need heavy batteries to provide power. Solar cells can only get energy from the sun. The third is that the missions conducted in space in an opaque atmosphere for instant on Jupiter. There is no light there, thus solar cell are useless there. The nuclear source of power would be useful in space. Nuclear batteries would also eliminate the necessity of heating electronics in areas where temperatures are -245 degrees Celsius, for instance in space. These incredible advantages would ensure the nuclear batteries will easily replace current chemical sources of power. All applications including the phones that require large powers and a high lifetime and not forgetting a definite design over density will automatically prefer the nuclear source. The other application is the use of these batteries in mobile devices. A nuclear-powered battery for a laptop or a phone can provide supply approximate 8,000 times the life of the ordinary laptop or phone battery. Nuclear brings about forgetting the tedious process of recharging and replacing batteries. A nuclear battery through research has been found that it can endure a minimum of five years. The Xcel-N has never been switched off since it started its operation. It has been working for eight months in a row, without using any external energy supply. Low energy electronics are ending up being versatile. Therefore, these kinds of batteries are nowadays becoming commercially relevant. They act as power sources for machinery that ought to function unattended for a long time, like satellites. Also, if it packed correctly, it can be applied to spaceship and pacemakers. These batteries can provide energy to a variety of objects from the tiny sensors to enormous systems. The plans of these nuclear batteries A proof-of-principle form of analysis starts with an emitter. Irradiation of the high-energy grapheme-based kind of beta emitters is necessary. When this is fully optimized, then invention and development of nuclear powered cells is quite possible. The key hurdles are experienced in the transportation of these devices and their handling. It is advisable to collaborate with Defense Advanced Research Project Agency (DARPA) in developing the geometry, and in field-testing of these devices . Feasibility assessment The above-mentioned researches concerning the nuclear batteries present adequate hope in the supply of power and energy in future for devices and applications. Upon implementation of these technologies, feasibilities and credibility of devices such as smartphones will be elevated. This calls for keen observation of all standards while producing nuclear batteries so as to avoid the leakage of radioactive substances. Economic feasibility will be dictated by advantages and its applications. With a variety of features being added to these researchers, nuclear batteries will undoubtedly be one of the greatest inventions made in human history. Dose calculator Since we live in a radioactive universe where radiation is a part of the natural environment, its essential to measure the radiation dose. The unit used to measure is known as the millirem (mrem). The regarded annual dose in every person should be around 350mrems, whether it comes from a natural or a man-made source. It is nor desirable for any individual to receive more than that dose annually. Absorbed dose refers to a quantity of radiation experienced by a person in the body. The absorbed dose units are (rad) and gray (Gy). Dose equivalent adds together the radiation quantity that is absorbed with the medical effects of that radiation type. For the beta and the gamma rays found in smartphones have the same dose equivalent as the absorbed dose. The dose equivalent for these rays is much higher than those of the neutron and the alpha. This is because these types are more harmful to human body. The dose equivalent units are the roentgen man (rem) and the sievert (Sv). The biological equivalent of the dose is estimated in 1/1000th of a rem, which is known as millirem. For practical purpose, 1R (exposure) = 1rad (absorbed dose) = 1 rem or 1000mrem (dose equivalent). A measure presented as Ci shows substances radioactivity. A measure in rem or mrem indicates the energy amount that is deposited in living tissues by a radioactive substance. Nuclear energy source will replace conventional cells as well as the adaptors; hence, the future will be full of exciting innovations with new ways of powering the portable devices. Although automobiles are in the first phase of their development, it is a clear indication of how nuclear energy is being employed. It is highly promising that the nuclear cells will definitely find a niche in automobiles and issues like running out of fuel or the battery life will come to an end. Though they pose a negative effect, the advantages brought about by nuclear batteries outweigh the disadvantages. The good thing is that these demerits are controllable. In future, the world of science will continue to use electric power from indispensable radioisotope. The scientific world argues that small devices ought to use small batteries to supply them with power. The urge for extra power arises as technology improves.

Out of this Furnace essays

Out of this Furnace essays The book Out of This Furnace by Thomas Bell expresses a story of the triumph of man over his place in society. It illustrates this point through the story of George Kracha and his offspring and their struggle to adjust to the world they had arrived in. Their new home was an unforgiving place. It was filled with ignorant people who were not tolerant of the new peoples coming to share their homeland. Thomas Bell, author of Out of This Furnace, grew up in the steel mill town of Braddock, Pennsylvania. He drew on many personal experiences to create a full picture of the environment in which the story takes place. This fictional portrayal of the steel mills is based on the true history of steel production over three generations beginning in 1881. Bell illustrates the lives of the steel workers and the conditions under which they live and work. Firstly, the living conditions in these mill towns were appalling for the steel workers. They lived their lives working as hard as they could, for someone else. In those days, as well as in these days, the very system of work and money was geared to keep lower class down and keep higher class up. This is called capitalism; the method of governing that allows unlimited accumulation of wealth and properties. In fact, this is a horrible way to govern the masses. Because of this premier principal of capitalism, it is possible to state that this system of government ifs faulty. The fault begins in the fact that not all classes are equal; the higher classes would have the lower classes believe that they live in the same station of life as them. When in fact, the very idea of capitalism is what draws the separation of the classes. It becomes a situation where the labor of the lower class keep the upper class afloat, yet the upper class holds all the power in voting and through other methods. . Bell portrays initial worker interest in forming these unions, yet the representatives had a ve...