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 horizon (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 e...
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... the equations are valid, wormholes most assuredly do not exist. If they did it would probably send shivers up the science fiction community’s spine. In the book,
Relatively Speaking, the Author, Eric Chaisson says, “The world of science is littered with mathematically elegant theories that apparently have no basis in reality” (182). Although black holes have not been conclusively proven to exist, there is strong evidence, in the observable universe, that they do. Black holes are very important to the world of cosmology. They allow for the study of common particles under very uncommon environmental variables. Scientists have vastly increased their knowledge of the universe and the properties of matter through the study of a black holes effects on light, time and the fabric of the space. Works Cited Bunn, Ted
“Black Holes FAQ.” NSF Science and
Technology Center (September 1995): Online.
Internet.
http://physics7.berkeley.edu/Bhfaq.HTML
Chaisson, Eric. Relatively Speaking: Relativity,
Black Holes, and the Fate of the Universe. New
York: W.W. Norton & Company, 1988.
Hawking, Stephen. A Brief History of Time: From the Big Bang to Black Holes. New York: Bantam
Books, 1988. Manthe 5
Dudley. San Diego: Greenhaven Press, 2005. Opposing Viewpoints. Rpt. From “Raise the Minimum Wage to $10 in 2010.” Let Justice Roll Living Wage Campaign. 2009. Opposing Viewpoints in Context. Web. 17 Nov. 2013.
Black holes can be dangerous. They can be dangerous because they can suck anything up. There are large numbers of small stars being captured. They mostly grow from stars. The more they eat the bigger they get. This is how black holes grow (Science & Technology from the U).
A Black hole is a theorized celestial body whose surface gravity is so strong that
Black Holes are referred to stars, and nothing from light or any kind of matter is able to escape the gravitational pull of that Black Hole. Black Holes are the last of the line after Neutron Stars and White Dwarfs. Black Holes are about 10-15 more times/massive than the own Sun itself. When the Black Hole reaches its final "stage" they blow up into also known as a supernova. Most of the debris is left behind as well which fusion can no longer take place. The Black Hole will collapse or close on itself if no force is to the opposing gravity. Nuclear fusion creates some energy and some pressure with the Gravity of the Black Hole. So with no force, the Black Hole shrinks to zero volume. Black Holes pull in all kinds of matter. Black Holes are small, but you wouldn't think they would be. They may be small but they have the energy to suck things up into themselves. A usual diameter of a regular black hole is 4 times the diameter of the sun. With the cause of them being small, distant, and dark, they wouldn't be able to be seen or observed. Now if you get too close to one, you may die. So black holes are still a mystery to be solved. Black Holes are massive in weight and they get bigger the more matter they suck up/ absorb. Black Holes are like the sibling(s) to wormholes. Blac...
And, just as X-rays brought a completely new universe into focus, one can hardly imagine what a gravitational view of the universe will reveal. At the very least, we will have definitive proof or denial of black holes, but we may find that black holes are some of the more subtle features of the universe.
Every day we look into the night sky, wondering and dreaming what lies beyond our galaxy. Within our galaxy alone, there are millions upon millions of stars. This may be why it interests us to learn about all that we cannot see. Humans have known the existence of stars since they have had eyes, and see them as white glowing specks in the sky. The mystery lies beyond the white glowing specks we see but, in the things we cannot see in the night sky such as black holes.
It is now believed that the origin of some black holes is nonstellar. Some astrophysicists suggest that immense volumes of interstellar matter can collect and collapse into supermassive black holes, such as are found at the center of some galaxies.
Some think that the minimum wage should not be raised, but others think that the minimum wage should be raised. If one had to be chosen, raising the minimum wage would be better. The minimum wage should be raised because if you were to work full time on minimum wage, you are below the poverty line; Also states that did raise the minimum wage above the federal standard have had more job growth than states that did not. Finally, "Minimum wage workers are much more likely to immediately go out and spend that extra money in the economy," says Heidi Shierholz of the Economic Policy Institute, which favors raising the minimum. "That's because they're often living paycheck to paycheck."
The minimum amount of money that must be paid to an employee by an employer in hourly basis, regardless of employee’s post or qualification, which often fixed by government authorities is known as minimum wages of that country. Currently federal minimum wages in United States is $7.25 which was last set at July 2009. Every year there is a huge debate at our country about raising minimum wages. Increasing minimum wage obviously has massive effect on the country’s economy and its people. Some experts say that, raising minimum wages can improve the life style of those employees who are under the poverty line. They believe that by raising the minimum wages net income of the working class will increase and helps to keep the financial balance in between the management level and the operational level employee. In contrast, there are other people who think that by rising the minimum wages can have negative effect is country’s economy since company can hire low number of staff to keep expenses low, resulting massive unemployment population in the country.
Barrack Obama’s State of The Union Address of 2013 caused a controversy that is still a relevant debate topic. Live from the United States Capitol, Obama clarified his perception on the minimum wage in America. Obama insisted that minimum wage should be increased because it would be a means of social justice to many Americans. Many Americans live in poverty and Obama believes that raising the minimum wage would assist some Americans to remove oneself from living in poverty and assist the economy from disintegrating. After hearing Obama’s State of The Union Address of 2013 and reading many articles concerning the raising of minimum wage, I believe minimum wage should be raised because it would decrease poverty, keep individuals from under the table jobs, and cause a decrease in taxes.
Minimum wage has always been a controversial issue. Many politicians use the argument of minimum wage for their own political propaganda. Some may argue minimum wage should be raised, while others believe it will have detrimental effects on our economy if it is raised. Surprising to most people, minimum wage earners make up only a small percent of American workers. According to the Bureau of Labor Statistics, minimum wage workers make up about 2.8% of all workers in America. “The majority of minimum wage workers are between the ages of 16 and 24. These are high school and college students” (Sherk 2). But high school and college students are not the entire percentage of minimum wage earners. When minimum wage is raised, it affects the entire economy in many different ways.
Dorn, James A., and David Cooper. “Should the Federal Minimum Wage Be Raised?” U.S. News Digital Weekly 5.18 (2013): 14–14. Print.
One, higher minimum wage will boost the economy in the United States. Working Americans are kept out of poverty, they can pay for better housing, and buy health insurance. Moreover, they can have healthier eating and exercise habits, all of which cut down on illnesses. It has been proven that the minimum wage being raised does better for the country, therefore, mandatory laws should enforce raising the minimum wage. Supporters of the measure believe that the bill should apply to all classes of Americans working in every field. I have used many sources that include newspaper articles, journal articles, as well as web articles to conclude my
Einstein himself, working at Princeton with Nathan Rosen had discovered that the equations of relativity actually represent a black hole as a bridge between two regions of flat space-time, a phenomenon known as the “Einstein-Rosen Bridge”. Later on, in 1963, the New Zealand mathematician Roy Kerr found that if a black hole is rotating, a singularity still forms, but in the form of a ring, not a point. It was believed that in principle, a particle may be able to fall towards the singularity, but if at some point moved through the hole instead of the ring, the particle may not be lost forever. Therefore, with these theories in mind, a particle falling into a black hole will fall through the ring that the singularity has become, then going through the Einstein-Rosen Bridge, eventually being spewed out of the white hole into another space-time continuum.
The gravitational force at the surface of the planet is the force that binds all bodies to earth, this force is one of the four forces recognized by physicists, and this kind of force is known as "gravity" it attracts every celestial object to earth, and though it is the most important of the forces essential for our lives, it is the least comprehended of them all Throughout ages scientists have tried to solve the mystery of gravity, and one of the first discoveries concerning gravity was made by Aristotle who concluded from his experiments that the downward movement of any body is that has weight had a proportional relationship between its quickness in motion and its size. However this theory was accepted for centuries, but after a series of experiments made by Galileo, Aristotle's theory was proved to be incorrect, as Galileo said after a series of experimenting at the Pisa tower that bodies of different sizes fall with the same speed. Later on, the idea that the force is needed so as to change the motion of the body was discovered. After that a great scientist was to improve all the previously accepted theories, this scientist was Newton who was to make decisive advances in understanding gravity. In his first law Newton said that a body in state of rest or uniform motion in a straight line will keep on moving unless acted upon by a force, while in his second Newton expressed his first law in a more quantitative way as he said that force acting on a body is the rate of change of it's momentum which can be put in a rule as F= ma Where (F) is the force acting on the body while (a) and (m) are the acceleration and inertial mass of the body respectively. Newton also made the law of gravitation in which he expressed the gravitational force of attraction between any two bodies acting along the line joining them as Where (m) is the mass of the two bodies and (r) is the distance between them, while (G) is the proportionality constant known as the constant of gravitation, afterwards Newton made his very important assumption in which he showed that the inertial mass of a body is identical to its gravitational mass which implied that the gravitational force exerted on or by an object is directly proportional to its inertia.