MAKING SOLAR ENERGY MORE ECONOMICAL EE1001 Engineering Grand Challenge 1. Introduction The purpose of this position paper is to present solutions to the following engineering grand challenge – making solar energy more economical. It outlines the problems‚ our proposed solutions‚ and the feasibility of these recommendations. 1.1 Motivation One of the greatest motivators is the pressing issue regarding our current over reliance on fossil fuels. Fossil fuels are limited and are non-renewable
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wavelengths and photon energy is called the electromagnetic spectrum. There are 7 different types of waves in an electromagnetic spectrum; radio waves‚ microwaves‚ infrared waves‚ visible light‚ ultraviolet waves‚ x-rays and gamma rays. Each of these categories contains different type of waves‚ which varies in wavelength and photon energy‚ which is the units in which electromagnetic radiation come in. Figure 1. An Electromagnetic Spectrum shows the different wavelengths and photon energies of different
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Photosynthesis notes -sunlight brings energy to Earth -the energy in sunlight is packaged in photons -the photosystems in the thylakoid membrane capture photons -pigments in the photosystems have an antenna complex that actually grabs the photons -chlorophyll b captures the photons and transfers the energy to chlorophyll a (the reaction center) -when the reaction center receives the energy it donates an electron -the donated electron will move down the electron transport system (ETS) -ETS
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Activity: Identifying Forms of Energy Printer-friendly version Can you identify the different forms of energy in the picture below? Enter your answer in the table below and click the "Check Answers" button to check your work. Word Document: Text alternative of the Forms of Energy Activity The six fundamental forms of energy: Mechanical‚ Chemical‚ Thermal/Heat‚ Electrical‚ Nuclear and Radiation. Word Document: Text alternative of the Forms of Energy Activity https://www.e-education
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Discussion Questions 1. Why do different metals have different characteristic flame test colours? The photons emitted during the test precisely match the quantum energy difference between the excited state and the ground state. For different elements the spacing between the ground state and the higher energy levels is different. So different elements have different flame test colours. 2. Most salts contain a metal and a non-metal. Look at the compounds we tested and determine whether it is
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1. INTRODUCTION A solar cell is a device that converts the energy of sunlight directly into electricity by the photovoltaic effect. Sometimes the term solar cell is reserved for devices intended specifically to capture energy from sunlight‚ while the term photovoltaic cell is used when the light source is unspecified.”Photovoltaics” the field of technology and research related to the application of solar cells in producing electricity for practical use.
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absorbed by a compound in order for a photochemical reaction to take place‚ and that for each photon of light absorbed by a chemical system only one molecule is activated for subsequent reaction. This "photo equivalence law" was derived by Albert Einstein during his development of the quantum (photon) theory of light. Absorption of visible and/or ultraviolet light by a molecule transfers all the energy of the photon to one molecule. This is sufficient energy to excite one bonding or non-bonding electron
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INTRODUCTION: The electromagnetic spectrum is the range of all possible frequencies of electromagnetic radiation. Radiation can be said to be energy that travels and spread as it goes. The "electromagnetic spectrum" of an object has a different meaning‚ and is instead the characteristic distribution of electromagnetic radiation emitted or absorbed by that particular object. We tend to witness different radiations of the electromagnetic spectrum without knowing‚ example is the visible light that
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To what extent does natural UVB radiation impact on the marine life? Ultraviolet-B radiation‚ also known as UVB‚ is a type of ultraviolet radiation forming a part of the electromagnetic spectrum (6). It is produced by high temperature surfaces in a continuous spectrum with the primary natural source being the sun. UVB radiation is harmful to living organisms and is only partially absorbed by the ozone layer of lower stratosphere(6). And due to ozone depletion in the recent decades‚ more UVB radiation
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fact the cooled remnant of the primeval fireball - an echo of the Big Bang. • If the universe was once very hot and dense‚ the photons and baryons would have formed a plasma‚ ie a gas of ionized matter coupled to the radiation through the constant scattering of photons off ions and electrons. As the universe expanded and cooled there came a point when the radiation (photons) decoupled from the matter - this happened about a few hundred thousand years after the Big Bang. That radiation cooled and is
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