Lab 4 – Energy Sources and Alternative Energy Experiment 1: The Effects of Coal Mining Table 1: pH of Water Samples Water Sample Initial pH Final pH (24-48 hours) Pyrite 6 7 Activated Carbon 6 7 Water 6 6 NOTE: Picture below is after 48 hours of all three samples sitting in a warm place. POST LAB QUESTIONS 1. Develop hypotheses predicting the effect of pyrite and coal on the acidity of water? a. Pyrite hypothesis = If pyrite is in the water source‚ then it will make
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increasing. PV is a solar power technology that uses solar cells or solar photovoltaic arrays to convert light from the sun directly into electricity. Photovoltaic is the direct conversion of light into electricity at the atomic level. Some materials exhibit a property known as the photoelectric effect that causes them to absorb photons of light and release electrons. When these free electrons are captured‚ electric current results that can be used as electricity. Solar cells produce direct current
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Whether yours is for business purposes or personal use‚ you need an efficient way of charging the battery in the phone. But‚ like most people‚ you probably don’t like being dependent on the main supply for charging your cell phone battery or you don’t have the time to recharge your cell phone battery. As technology has advanced and made our phones smaller and easier to use‚ we still have one of the original problems: we must plug the phone into the wall in order to recharge the battery. Most people accept
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About Solar Energy * The sun’s rays‚ or solar energy‚ have been used since the beginning of time and is vital to all living things. In addition to solar energy being a constant resource‚ heat and electricity are other forms of energy that can be made from solar energy. The largest advantage of solar energy is that it is a free and unlimited source of energy. Solar energy is also the cleanest energy source that does not compromise or add to global warming. Technology allows solar energy to be
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first energy source that is solar energy) BODY I. One of the energy source used around the world is solar energy. It is one example of renewable energy because the sun shines us endlessly. Some of the countries using solar energy are Egypt‚ German and Japan. A. Energy can be extracted from the sun by using two methods. 1. First is by using solar panel which is lenses or mirror that is used to focus the sun ray and produce heat. 2. Second is by using solar
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efficiency of ideal solar cells by photon induced transitions at intermediate levels‚” Phys. Rev. Lett.‚ vol. 78‚ pp. 5014–5017‚ Jun. 1997. [3] S. M. Hubbard‚ C. Bailey‚ S. Polly‚ C. Cress‚ J. Andersen‚ D. Forbes‚ And R. Raffaelle‚ “Nanostructured photovoltaics for space power‚ J.Nanophoton” vol. 3‚ pp. 031880-1–031880-16‚ 2009. [5]. Kayes‚ B. M.‚ Atwater‚ H. A. & Lewis‚ N. S. Comparison of the device physics Principles of planar and radial p_n junction nanorod solar cells. J. Appl. Phys.97‚ 114302_114311
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First Solar Turns Sunshine into Profits Case Summary: First Solar was founded in 1999 from the Walton family. According to the Marketing Sun Power‚ First Solar’s mission is “to create enduring value by enabling a world powered by clean‚ affordable solar electricity.” (p. 90) The company manufactures solar modules‚ which have razor-thin cadmium telluride. They are manufactured this way because it can still produce electricity even when clouds are blocking the sun. With this product First Solar
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SOLA3507/SOLA9002 Solar Cells School of Photovoltaic and Renewable Energy Engineering Lecture 13 – Review Dr Alison Lennon (Rm 127 TETB) SOLA3507-9002/13-1 Assignment and Quiz Marks • • Marks for on-time assignments (Assignment 2 and PG Assignment) should be available on BB by next Mon 9 am. Final quiz marks will be available on BB by Fri 14 June (hopefully sooner). Please check your mark and come and see me if you think it is wrong. PLEASE BRING MARKED COPIES OF YOUR QUIZZES WITH YOU
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manufacturer of slim-film solar cells attached to panels of cylindrical that can deliver additional energy than conservative flat photovoltaic panels. Solyndra‚ founded in 2004 by businessman Chris Gronet‚ pushed the Obama administration to help its niche solar technology competent cylindrical solar panels that were relatively very expensive to make but easier and economical to install on the roofs of commercial buildings.Wang‚ Ucilia The companys new system build up the elastic cells‚ made of‚ gallium
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functions of the main cell components of the body cell. The cell membrane : is something that lets some things in and some things out of the cell. It is an outer cover for the cell. If the cell membrane was non existences the cell would spill all over the place. Its function is to protect the integrity of the interior of the cell by allowing certain substances into the cell‚ while keeping other substances out. It is composed of a thin‚ double-layered sheet of lipids‚ around the Cell and is a protective
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