White Dwarfs The Remnants Of Stars - 957 Words

White dwarfs are the remnants of stars similar to the Sun after the exhaustion of nuclear fuel. When the nuclear burning nears exhaustion, the star expels majority of its outer layers, creating a planetary nebula. The remaining core could have temperatures of more than 100,000K. Some white dwarfs gather matter from nearby stars via accretion while most others cool down over a timespan of billions of years. Soft X-ray as well as extreme UV observations are a key tools in determining the composition of these stars. [1] With the mass of around half that of our Sun yet a size just exceeding that of the Earth, white dwarfs have densities of around ~200,000 that of the Earth’s. [1] A white dwarf, in contrast to stars like the Sun is unable to create radiative pressure as all nuclear processes would have ceased. With no opposing force, gravitational pressure would compress the matter until even the electrons that make up atoms are smacked together. [1] As explained by the Pauli Exclusion Principle, under normal conditions, identical electrons (with the same spin) will not occupy the same energy level. Electrons can spin only in two directions, therefore, any given energy level could only be occupied by two electrons at a time. [1] In general gases this poses no problem as there are fewer electrons than required to fill all the energy levels. However, since the density of white dwarf is far greater, the electrons are very closely packed. Termed as ‘degenerate gas’, this type of gasShow MoreRelatedThe Death of Stars and Their Detection After the core of a star has depleted all its hydrogen in1500 Words   |  6 PagesDeath of Stars and Their Detection After the core of a star has depleted all its hydrogen in fusion, it undergoes its final stages of its life, or in other words, its death. The process path of a dying star depends on its mass. 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Technical Events for Cse Free Essays

Group discussion Introduction: The purpose of group discussion is not to win an argument or to amuse your classmates. The purpose of discussion is to help each group member explore and discover personal meanings of a text through interaction with other people. Qualities judged in a group discussion: †¢ initiative: initiative is the ability to take action with out being told. We will write a custom essay sample on Technical Events for Cse or any similar topic only for you Order Now The candidate who starts the discussion has this quality †¢ subject knowledge: Here, selectors find the following points: ? . hether the candidate have understood the meaning of the discussion ? .whether the andidate have the proper general knowledge ? .whether they have original ideas and whether they can develop these ideas logically. †¢ Time management: Here the best candidate is the one who: ? Express all his views with in his own time limit. ? Give other candidates time to express their views †¢ Team work: The selectors look for candidate who have the ability to work as a team member. Important points in group discussion: †¢ How good you are at communication with others. †¢ How you behave and interact with group. †¢ How open minded are you. †¢ Your listening skill. †¢ How you put forward your views. †¢ Your leadership and decision making skills. †¢ Your analysis skill and subject knowledge. †¢ Problem solving and critical thinking skill. †¢ Your attitude and confidence. Do’s of participating in a GD: †¢ Listen to the subject carefully †¢ Put down your thoughts on a paper Initiate the discussion if you know the subject well †¢ Listen to others if you don’t know the subject †¢ Support you point with some facts and figures †¢ Make short contribution of 25-30 seconds 3-4 times †¢ Give others a chance to speak †¢ Speak politely and pleasantly. Respect contribution from other members. †¢ Disagree politely and agree with what is right. †¢ Summarize the discussion if th e group has not reached a conclusion. Don’ts of participating in a GD: †¢ Initiate the discussion if you do not have sufficient knowledge about the given topic. Over speak, intervene and snatch other’s chance to speak. †¢ Argue and shout during the GD †¢ Look at the evaluators or a particular group member †¢ Talk irrelevant things and distract the discussion †¢ Pose negative body gestures like touching the nose, leaning back on the chair, knocking the table with a pen etc. †¢ Mention erratic statistics. †¢ Display low self confidence with shaky voice and trembling hands. †¢ Try to dominate the discussion †¢ Put others in an embarrassing situation by asking them to speak if they don’t want. How to cite Technical Events for Cse, Essay examples

New York Soda Ban free essay sample

New York Mayor Michael Bloomberg’s recent proposal to ban 32 ounce drinks from food chains can help set a new default serving on soft drinks. In return it may also help the general public with their health problems and health care costs. This ban would be an excellent incentive to start promoting better health. Tara Parker-Pope, the author of â€Å"How Can a Big Gulp Look So Small? † states that â€Å"†¦we tend to consume what’s put in front of us† and â€Å"when we eat out, everything from a restaurant’s lighting to the menu design to the size of the plate or cup influences how much we eat and drink†. For instance, indulging in a sugary drink will briefly make someone feel energized and even happy but once that sugar spike goes down, people tend to feel lethargic and without motivation to do much physical activity. Lack of physical activity is a side effect caused by drinking too much soda, which then contributes to one of the factors that cause weight gain and obesity. We will write a custom essay sample on New York Soda Ban or any similar topic specifically for you Do Not WasteYour Time HIRE WRITER Only 13.90 / page Banning large soft drinks would help people take better control of their health by offering them a healthy sized beverage as their only choice and to also avoid over indulgence. Studies have shown that it is difficult for the human brain to perceive serving sizes accurately (Pope-Parker). Without limitations on a serving size, people can easily go overboard on their food and beverage consumption. The idea of banning soft drinks larger than 32 ounces may be disapproving to those who love their large sugary drinks, however once the benefits of consuming less soda start to have a positive impact on their lives, they will be nothing more but grateful for the change. In addition to being harmful in large amounts to the bodies of people, the over consumption of soda also has an effect on health care costs. Consuming too much soda leads to weight gain and obesity, which then leads to chronic diseases. The Centers for Disease Control and Prevention has found that â€Å"it is estimated that health care costs for chronic disease treatment account for over 75% of national health expenditures† (keiseredu. org). The rise in rates of overweight and obesity in people have been factors that contribute to chronic illnesses. The soda ban will be beneficial to those who are overweight or obese, which will then contribute to a decrease in chronic illnesses and health care costs. Jagadeesan, a medical doctor and a member of the ABC News Medical Unit, has found that â€Å"the average American spends more than $6,000 each year on health care† (Consumer Behavior Contributes to Rising Health Care Costs). Rather than spending that much money on health care costs, people could be spending it on things that are beneficial to their health such as gym memberships, personal trainers, weight loss programs and healthier foods. Banning a 32 ounce sized drink will not stop people from visiting a doctor’s office, however it will keep their visits to the doctor minimal and can help support the recommendations a doctor gives to an individual who is in need of improving their health. Additionally to reducing health care costs and the waist line of many adults, the soda ban will also be beneficial to children who suffer from being overweight or obese. Alice Park, the author of the artile â€Å"Cutting Out Soda Curbs Children’s Weight Gain, Study Shows† states that research has shown thatâ€Å"†¦limiting children’s access to sugary beverages can indeed curb weight gain†. Since parents set forth the highest example on their children, limiting their soda intake will also limit their children’s intake. This can create a chain reaction within parents and their children on changing their drinking habits and reaching a healthier weight and better health. If a parent can change the drinking habits of a child during present time, our future generations to come will be less likely to struggle with being overweight or obese. It only takes a small intervention to change not only a child’s soda drinking habits but also their weight (Park). In other words, children can adjust to healthier drinking habits more quickly than adults. It might be more difficult for an adult to get adjusted to the change since they have been consuming large amounts of soda for a longer time than children have, but with time and patience both parties will adjust to the change. In sum, Mayor Bloomberg’s soda ban will be beneficial to adults and children who are overweight or obese by limiting their sugary drink intake. His ban will change people’s drinking habits in a way that will help them lose weight and get in better health. A reduction in chronic diseases will occur once people start to lose weight, which will then contribute to a reduction in health care costs as well. Over all, this soda ban will be an incentive to help people live longer, healthier and happier lives! Works Cited Centers for Disease Control and Prevention. â€Å"Rising Health Care Costs Are Unsustainable. Kaiseredu. org. 2011. Web. 24 Sept. 2012.