Nuclear Fusion Essays - Chemistry, Nuclear Physics, Nature

Nuclear Fusion Nuclear Fusion is the energy-producing process which takes place continuously in the sun and stars. In the core of the sun at temperatures of 10-15 million degrees Celsius, Hydrogen is converted to Helium providing enough energy for us to sustain life on earth. For energy production on earth, different fusion reactions are involved. The most suitable reaction occurs between the nuclei of the two light forms (isotopes) of Hydrogen - Deuterium and Tritium; eventually reactions involving just Deuterium or Deuterium and Helium may be used. A brief breakdown of the fuels used are as follows, Deuterium is a very abundant isotope of hydrogen and can be extracted from all forms of water, Tritium is not as abundant and is not a natural isotope, instead a machine is needed to extract it from lithium. Lithium, which is the lightest of all metals is plentiful on the earths crust, there is so much on the crust that right now they say there is enough to provide the planet with over a thousand years of electricity. Fusion power offers the potential of an almost limitless source of energy for future generations but it also presents some formidable scientific and engineering challenges. It is called 'fusion' because it is based on fusing light nuclei such as hydrogen isotopes to release energy. Effective energy-producing fusions require that gas from a combination of isotopes of hydrogen - deuterium and tritium - is heated to very high temperatures (100 million degrees centigrade) and confined for at least one second. One way to achieve these conditions is to use magnetic confinement. The Colliding Beam Fusion Reactor is a magnetic confinement system that avoids the typical anomalous transport (refers to all processes in which loss of particles or energy takes place - it is due to a variety of instabilities that lead to turbulence). The reactor is compact with good accessibility and low maintenance costs. Most of the technologies needed to evaluate this concept exist, or could become available with simple engineering modifications to existing technologies. Some of the advantages of using fusion as a source of energy are, that the fuels are plentiful, and will last for years, very safe to people because any malfunction results in immediate shutdown, also, there is no atmospheric pollution which can lead to harmful things such as acid rain or the greenhouse effect, and finally there is no need for disposal of materials. An example of just how much power this procedure produces is that, with 10 grams of Deuterium, which can be extracted from 500 liters of water, and 15g of Tritium, produced from 30g of Lithium would produce enough fuel for the lifetime electricity needs of an average person in an industrialized country. In closing I would like to add my personal opinion about nuclear fusion, I feel that it is an excellent source of energy for our planet to have, and although it is not available for home use as of yet, you can expect to have this great power source in your home within the next 25 years.

Sample Phrases to Use in Writing a Literary Essay

Sample Phrases to Use in Writing a Literary EssayA sample paragraph literary essay may be of great assistance to you in telling your story. You can get the same ideas from a number of resources, but there are a few that stand out as being very effective. Here are some pointers to get you started.It may be one of the best resources for you to get the 'nuts and bolts' for writing a sample paragraph. A sample literary essay will give you the basic idea to work with. It is a step by step process that can be followed. The point is to make it easy to understand. The overall purpose is to get the reader involved and engaged.Even a sample paragraph is not complete without a beginning and ending. The beginning would introduce the theme or idea you are working with and describe the setting or place that is the focus of the essay. The ending should provide a sense of closure to the story that is being told.The beginning of a sample paragraph can begin by explaining how you feel about something. Perhaps it is how you feel about your job, or your relationship with someone. The topic is important to the beginning so make sure you mention it before getting into the meat of the essay. This is the starting point for how you would like to describe your story to others.If you are trying to find a place to start, the next step is to explain what you hope to achieve in the paragraph. This could be about things such as how you want to tell the reader's your story. Whether it is a small personal story or an important life event, you can start by describing the main point of your story.Describing a character in a paragraph can be tricky, especially if you are trying to tell a good story. Thereare several techniques you can use to ensure that your character is real and presents the needs of the reader. By the end of the paragraph, you should have created a sense of interest in the reader.Sample paragraphs are helpful in this regard because they provide an outline of the themes you woul d like to highlight in your essay. There are many sites that have sample paragraphs available for free. A sample paragraph literary essay can provide you with ideas for your essay, and even get you started.