Why are gun barrels rifled? Background to rifling Rifling consists of lands and grooves in the inside of a barrel‚ the lands are the part of the barrel which is not cut away while the grooves are the part of the barrel which is cut away. Lancaster oval bore‚ eight groove rifling and polygonal rifling are only a few example of rifling forms. Lancaster oval bore rifles have a smooth barrel interior. Unlike Lancaster oval bore rifles‚ grooved rifles have grooves which are engraved into the interior
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worldwide‚ one million of which were in the United States alone (FracFocus: ECHO-EPA Violations). However‚ many fear the environmental effects. Risks include ground and surface water contamination‚ air and noise pollution‚ and an increase in seismic activity. Hazards to public health and the environment are yet to be discovered‚ because the first commercial application did not begin until the late 1940’s; however‚ hydraulic fractures have been recorded naturally throughout time (The Truth about
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What are the pros and cons of outsourcing? Outsourcing is often undertaken to provide enterprises a competitive advantage by delegating business process to external agencies and realizing the benefits of low labor‚ better quality and improved innovation. While this provides a good picture of the fair side of the coin‚ most managers however need to grope with the possible shortcoming of the process and the corresponding impact on the company’s core processes. To best analyze the opportunities presented
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people who intentionally copy someone else’s work. No matter whether it’s intentional or unintentional Plagiarism is a really big offence and one could be behind the bars for doing so. College students usually end up doing such mistakes which leads to sanctions like penalties‚ suspension‚ and even expulsion. Students sometimes fail to understand the concept of what the topic is or too lazy to sit and think of an idea or liked someone else’s work so much that they want to recreate it. “Google” is the solution
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their windpipe‚ and 100 people are struck by lightning. However‚ few of us consider eating solid food‚ taking a bath‚ or walking outside on a rainy day as unsafe activities. We just figure that the benefits of the activity clearly outweigh the risks” (Merino 30). This approach should be given to vaccines. Vaccination should be seen as an activity that benefits humans and only has only a small chance of negative
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morning ladies and gentlemen‚ I’m XXX from Tweleve Science 6. First of all‚ thank to God‚ because of His grace‚ I am able to deliver this speech‚ and also thank you to Mr. XXX for giving me this opportunity. Well‚ today I would like to talk about pros and cons of sex education. Why do I take this as my topic? Because all children will grow up to become adults and will require some basic knowledge of sex as well as pregnancy and sexually transmitted diseases at some point in time. Sex education is basically
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Wikipedia: Free Citations to the Free Encyclopedia In 2006‚ a study found that about eighty-seven percent of Wikipedia’s articles did not contain errors (Maehre). Wikipedia has been criticized by many who believe that its editorial process creates a source of information that is erroneous‚ uneven in quality‚ and subject to acts of deliberate attempts to lower the accuracy of information (Belanger). The website ’s millions of registered users‚ supporters‚ and administrators argue that they can edit
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one of the most critical time periods of a student’s life. However‚ there is extensive information to research that can aid you in deciding which schools to apply to. Various factors like location‚ student to teacher ratio‚ cost‚ and acceptance rate are heavily taken into consideration when students make their decision. When I was browsing through different colleges to apply to‚ I evaluated many of these different factors. Two of the many schools that I may apply to in the future‚ after quite
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effectiveness of a school (Popham). A typical student takes about 112 mandated standardized tests between pre-kindergarten classes and 12th grade (Layton). Although‚ these tests can be a waste of time and education. Standardized tests are irrelevant when measuring a student’s academic ability and they do not reflect what is being taught in the classroom. Standardized testing scores do not accurately
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Many argue that the Internet is a treasury of information while the others find it as a source of misleading information and danger. So‚ is the Internet a force for good or a force for evil? Firstly‚ the Internet is an invaluable tool which helps students learn. Without any effort we can gain an access to the study aids. Furthermore‚ we can save time avoiding queues thanks to a large selection of online stores‚ which is particularly important for the disabled. Moreover‚ the Internet gives an opportunity
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