Black Holes Essays (1415 words) - Black Holes, White Hole

Black Holes Black Holes If theories of their existence are true, black holes are the most powerful force in the known physical universe. Many people are familiar with the term black hole, but few people actually know anything about them. A black hole forms as a result of a massive star running out of fuel to burn (Chaisson, 193). Once the star is no longer exerting outward force by burning off gases, it begins to collapse under it's own intense, inward gravity (Chaisson, 193). It is like slowly letting the air out of a balloon. Once the star is compacted to a certain size, while it's mass, or weight, remains the same, it's gravity becomes so powerful that nothing can escape it (Hawking, 87). This critical size to weight ratio is known as the Schwarzchild Radius (Hawking, 87). Once a black hole is created in this way, an invisible area, or line around it exists. If any object crosses this line, it can no longer escape the gravitational force of the black hole (Hawking, 87). This line is called the event hori zon (Hawking, 87). If black holes are proven to exist, beyond theoretical physics, then they would probably be a very common anomaly in this universe. In 1915, Albert Einstein put forth the first real proposition of such an anomaly in his Theory of Relativity (Bunn, Black Holes FAQ). In the 1930s, three physicists, doctors Volkoff, Snyder and Oppenheimer, were able to prove the validity of black holes mathematically. Since then, black holes have become a very important and integral part of science and the over all understanding of the universe. It has been proven, mathematically, that black holes have infinite, gravity based, escape velocities and an immense effect on light, time and even the very fabric of space. All bodies in space have gravity. According to Einstein's Theory of Relativity, this is because bodies with a large mass, or weight, actually warp space (Chaisson, 77). For example, if a two dimensional sheet of cloth, stretched and suspended at four corners, represents space, and a bowling ball is placed in the center, the sheet will warp downward. If a golf ball is then set at the edge of the sheet and allowed to move freely it will be attracted toward the bowling ball, unless the golf ball is traveling at a speed great enough to not be effected by the curve. This critical speed is known as an escape velocity. This is the speed at which an object must travel to escape a body's gravitational force (Chaisson, 77). If a body is compacted, such that it's weight stays the same but it's radius, or size, becomes smaller, it's escape velocity increases in parallel (Chaisson, 196). The simple formula for this, in physics, states that a body's escape velocity is equal to the square root of it's mass, divided by it's radius (Chaisson, 77). For example, if a body's mass is two-hundred, a nd it's size is twelve and one half, the escape velocity would be four. If the size of the same body is reduced to two, while it's mass remained at two-hundred, the escape velocity increases to ten. Since a black hole's size is always decreasing and it's weight is always the same, the escape velocity is infinite (Chaisson, 195). This means that nothing can escape a black hole past the event horizon, not even light. Light is made up of waves and particles. It was discovered, in 1676, by Danish astronomer, Ole Christenson, that light travels at a very high, but finite speed (Hawking, 18). These properties of light govern that it must be subject to forces of nature, such as gravity. Light travels at such a high speed that it is not observably effected by gravity, unless that gravity is very strong. A black hole's gravity is powerful enough to trap light because it's escape velocity, being infinite, exceeds the speed of light (Hawking, 82). This is why a black hole is black. Once light crosses the event horizon it is drawn into the hole in space. Although the light is still hitting objects, it is not able to bounce off to indicate their existence to an observer, therefor the black hole appears

Good Business Schools With One-Year MBA Programs

Good Business Schools With One-Year MBA Programs A one-year MBA program is a Master of Business Administration (MBA) program that takes 12 months to complete. One-year MBA programs are also known as fast-track MBA programs, accelerated MBA programs, or 12-month MBA programs. What differentiates this program from a traditional MBA program is the amount of time it takes to complete the program and earn a degree. Traditional MBA programs typically take two years to complete. So, a one-year MBA program allows students to earn their degree in half the time it takes an average student. One-year MBA programs also have financial benefits over two-year programs. For instance, tuition is half the price because you have to pay for just one year of education rather than two. There is also missed income to consider. Attending school full-time for two years means two years without full-time employment income. A one-year MBA program gets you back to work in half the time. Business Schools With One-Year MBA Programs INSEAD began offering the first one-year MBA program decades ago. These programs are now commonplace in many European schools. The popularity of the programs has prompted many U.S. business schools to offer an accelerated MBA option in addition to traditional two-year MBA programs, executive MBA programs, and part-time MBA programs. You won’t find a one-year MBA program at every business school, but you should have no problem locating a one-year MBA program at a good business school. Lets take a look at some of the well-known and reputable business schools that allow students to earn an MBA in one year or less. INSEAD We start our exploration of one-year MBA programs with INSEAD because it pioneered the one-year MBA and is widely considered to be one of the best MBA schools in the world. INSEAD has campuses in France, Singapore, and  Abu Dhabi. Their accelerated MBA program can be completed in just 10 months. During that time, students take 20 courses (13 core management courses and 7 electives). Students can choose from more than 75 different elective options, which allows for a fully customizable experience. Another positive attribute of this program is the opportunity to experience multicultural education. INSEAD students are diverse, representing more than 75 nationalities. During the first four months of the program, students complete dozens of group projects so that they can learn what it is like to lead and work in diverse teams. At least half of INSEAD grads go on to own or manage their own company. Read more about the INSEAD MBA program. Kellogg School of Management The Kellogg School of Management at Northwest University is one of the highest ranked U.S. schools with a one-year MBA program. It was also one of the first U.S. schools to offer a one-year MBA program. The most interesting aspect of the Kellogg program is that it doesn’t jam two years worth of courses into 12 months like some schools do. Instead, Kellogg students get the option to skip core courses and focus on electives that match their career goals. With more than 200 courses to choose from, students can really make sure their education is as broad or as focused as they would like it to be. The customization continues with experiential learning. Kellogg has more than 1,000 experiential learning opportunities to choose from, including special labs, courses, and projects that provide real experience with critical business and management issues. Read more about the Kellogg One-Year MBA program. IE Business School IE Business School is a Madrid school that is consistently ranked among the best schools in Europe and on a global scale. The student body in the one-year MBA program, also known as the IE International MBA program, is 90 percent international, which means classrooms are diverse. MBA students can choose from either English or Spanish instruction. The curriculum shies away from the traditional - up to 40 percent of the program can be customized and tailored to your individual career goals and needs. One-year MBA students start out with a core period that emphasizes entrepreneurship before moving on to a lab period that consists of two accelerated labs designed to provide  experiential, challenge-based learning. The program culminates with an elective period that allows students to customize the rest of their education with courses, study at Wharton (a partner school), competitive IE consulting projects, a 7-10 week internship, and other unique opportunities. Read more about the IE International MBA program. Johnson Graduate School of Management For students who want to earn an Ivy League MBA from a U.S. school in just 12 months, the Johnson Graduate School of Management at Cornell University is the place to be. Johnsons one-year MBA program is specifically designed for current and aspiring professionals with strong leadership and quantitative skills. Students in the one-year MBA program take core courses during 10-week summer term before joining two-year MBA students in remaining courses. One-year MBA students also have access to the full range of courses across Cornell University, which amounts to about 4,000 different options. Highlights of the one-year MBA program include international study trips, a fall semester Management Practicum that allows students to gain hands-on experience through real consulting projects, and a spring semester Immersion Program that integrates coursework with fieldwork. Read more about the Johnson One-Year MBA program. Selecting a One-Year MBA Program The business schools mentioned in this article are not the only good schools with a one-year MBA program. There are a lot of them out there! However, these schools do provide a solid example of what you should look for in a one-year program. Some of the most desirable programs offer: Diverse classroomsA solid core curriculumCustomizable electivesExperiential learning experiencesGlobal learning experiencesInternship opportunities