Copper vs. Fiber Modern telecommunication networks rely primarily on two types of cable. Older copper cables have been replaced in many cases by fiber optic "light pipes‚" first in undersea cables and major intercity trunks‚ and later directly to many homes and businesses. Principles Copper cables carry information as an electrical signal‚ which may be digital‚ as in phone lines‚ or analogue‚ as in audio speaker cable. In optical fibers‚ however‚ data is carried digitally by light from a laser
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Silver Linings Playbook REVIEW Every single one of us is at least a little screwed up mentally. Obviously some people have worse conditions than others‚ but deep down there’s something bad within all of us – it’s part of the human experience. And that’s what makes Silver Linings Playbook‚ the new movie from writer-director David O. Russell based on the novel by Matthew Quick‚ such an impressive piece of filmmaking. Former teacher Pat Solatano ( Bradley Cooper) is released
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The Scalpel and the Silver Bear The Navajo creation story explains that medicine was brought to the people by an ancient owl. This owl sent down a magic bundle containing the powers of healing to the new world. For thousands of years Navajo people have used this knowledge to heal and live in harmony with each other. As a product of two worlds‚ Dr. Lori Alvord was one of the first people to combine modern medicine with Navajo beliefs by overcoming cultural differences. The Scalpel
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1 The allied troops‚ which include Poland‚ France‚ great Britain‚ the USA‚ brazil‚ and Mexico‚ and the Axis troops‚ which include the Nazis of Germany‚ Japan‚ and fascist Italy. World War II began on September 1‚ 1939 and ended on September 2‚ 1945. It lasted exactly six years and one day. The allies won world war two The leader of the country’s at the time of the war were as follows America= Franklin Delamere Roosevelt Russia= Joseph Stalin Brittan= Winston Churchill Germany= Adolf
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Chilean Copper Mine BCOM/275 Resource: ―Over 30 Workers Trapped After Chilean Copper Mine Collapse‖ article found in the Electronic Reserve Readings. Research additional articles and information about the Chilean mine collapse. Write a 700- to 1‚050-word paper using this and other articles as a resource. Because communications must be designed with the audience in mind‚ answer the following questions: What are some considerations to remember given the different roles and people in the audience
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Qualitative Analysis of Cations Short Overview The most common cations have been placed into five groups based upon solubility in aqueous solutions when different reagents are added. The reactions which occur are useful in identifying the presence of these cations in unknown samples. The process of identifying the cations is called qualitative analysis. The purpose of this experiment is to identify which cations are present in unknown solutions. A data sheet was not prepared for this experiment
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electrons maximum and the 3rd energy level is after the 2nd and can only contain 8 electrons maximum too. The positive protons in the nucleus and the negative electrons in the atom balance out each other making the atom neutral and balanced. I choose silver as my element for my project‚ but how did I know how to create it you may ask? In order to make a model of an atom you must know certain information that is conveniently given to you in the periodic table of elements to determine the atomic structure
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Determining the Percentage of Copper in a Copper Ore Aim: To determine the percentage of copper present in malachite. Hypothesis: That the percentage of copper in the malachite will be four percent. Materials: 2 x 250mL beaker‚ pestle‚ malachite‚ sulfuric acid‚ water‚ 2 x filter paper‚ funnel‚ filter stand‚ Safety Precautions: Wear safety glasses at all times when dealing with chemicals and apron to avoid ruining clothes. Method: Record the mass of the malachite sample. Place the malachite
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Copper Sulphate Calibration Aim The objective of this experiment is to determine the unknown concentrations of solutions. Introduction With the use of absorption of light a spectrophotometer sends UV wavelengths through solutions to determine their concentrations. The light absorbed is measured as the atoms‚ molecules and ions absorb the wavelengths of light that the spectrophotometer gives off (Meah‚2013). The level of light transmitted defines the amount of light absorbed‚ for instance‚ the lower
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The goal for our lab activity was to make a silver mirror by reducing silver ions with dextrose. The materials that we used were acetone‚ 5 mL of 1.5 M ammonium nitrate solution (NH4NO3)‚ 5 mL of 0.5 silver nitrate solution (AgNO3)‚ 10 mL of 5% dextrose solution (C6H12O6)‚ 10mL of 10% sodium hydroxide solution (NaOH)‚ a 50 mL beaker‚ a 250 mL Florence flask with a rubber stopper‚ a 10 mL graduated cylinder‚ a waste beaker‚ and distilled water. The first thing we did was rinsed the beaker‚ cylinder
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