The world as a whole currently faces several dramatic problems. Examples of these world problems include terrorism‚ desertification‚ overpopulation‚ deforestation‚ pollution‚ and world hunger. Of all these world problems the two that should currently be focused on are deforestation and pollution. Millions of acres of forests are chopped down by large lumber companies for the means of economic success. The world’s air and water is constantly polluted by dangerous machinery emissions and factorial
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Intense terahertz antenna array with interdigital electrodes Lei Hou‚ Wei Shi*‚ Ming Xu‚ Yong Chen Department of applied physics‚ Xi’an University of Technology‚ Shaanxi‚ China‚ 710048 ABSTRACT In this work a powerful terahertz antenna array with interdigital electrodes is fabricated‚ and the performance of one antenna unit is compared with a conventional resonant dipole antenna. The antenna unit has a better capacity of generating THz wave compared with a conventional resonant dipole antenna
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Danielle Silverstein PHY 101 Section 10497 March 4‚ 2013 Light up this World Purpose: In this lab experiment‚ LED lights will be used to show how when E&M radiation is absorbed‚ the energy is converted to heat. A drop of isopropyl alcohol will absorb light energy of different colors‚ and the evaporation rate of the alcohol will be measured. The key to this lab is the evaporation rate is directly related to the energy of the light shining on the drop. Materials: * * LEDs
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TITLE CONTACTLESS TACHOMETER ABSTRACT: The aim of the project is to design a contactless speed sensing device (tachometer) for a motor. Traditional tachometers require a physical contact to the shaft of the motor to measure the speed. In certain applications‚ where it is not possible to measure the speed directly‚ it is possible for a contactless tachometer to take the readings from a certain distance. This is the main motivation behind choosing this project. This contactless tachometer
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Experiment 23: Synthesis of an Alkene April 5‚ 2013 Purpose: Results and Discussion The weight of our n-Butyl Bromide sample (actual yield) was 0.09g. The percent yield was found to be 4.38%. Only 0.09g of the theoretical 2.055g yield was obtained. The boiling point was 104° C‚ which is higher than the literature value of 101° C. This is due to the sample being somewhat impure‚ as impurities tend to increase boiling point. When IR spectroscopy was performed‚ there were no OH stretches
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Tachyon particles are theoretical particles that supposedly have a minimum speed of the speed of light. Tachyons‚ (from the greek word ‘tachys’‚ meaning swift)‚ have never been found in experiments‚ but scientists think that they exist as faster-than-light “quasiparticles”. In the 1960s‚ some physicists wondered what would happen if matter could travel faster than the speed of light‚ something that is supposed to be impossible according to Einstein’s Theory of Special Relativity. Tachyons were first
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Meta Title: How the Top Four Elements Lead to the Best Far Infrared Sauna Reviews Meta Description: To attain the best far infrared sauna reviews‚ a sauna manufacturer commonly offers these four significant factors that most competitors lack. NOTE: THERE IS NO NEED TO SOURCE AN IMAGE. WE WILL DO THIS FOR YOU. Image Title: Best Far Infrared Sauna Reviews Due to Four Fundamental Dimensions Image Description: Achieving the best far infrared sauna reviews relies on four components that ensure not
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Cited: 1. National Research Council. 1996. National Science Education Standards. Washington D.C.: National Academy Press. 2. John Vassallo (ed) 1995 Special issue on synchrotron infrared spectroscopy Synchrotron Radiation News 8. 3. R. L. Brunelle and Reed 1984 Forensic Examination of ink and Paper (Charles C. Thomas Pub Ltd‚ Springfield). 4. R. Saferstein (ed) 2001 Forensic Science Handbook (Volume 1) (Prentice Hall‚ New Jersey)
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degradation by-products such as furans‚ CO2‚ CO and water [8]. For reliable operation of transformers‚ it is therefore important to embark on effective maintenance strategies using various degradation sensing techniques such as the furan analysis and infrared spectroscopy‚ aiming at identifying the change in properties and concentrations of these by-products associated with the degradation of transformer insulation. Predictions of such problems make the removal of the transformer from service possible
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New forensic laser technique for hair analysis Using a new laser technique‚ Jim Moran and his colleagues at Pacific Northwest National Laboratory‚ have devised a method of separating out the parts of hair samples that can reveal details about the recent history of the person to whom it belongs. In their paper‚ published in Rapid Communications in Mass Spectrometry‚ they describe a process they’ve devised whereby hair samples are pulled apart‚ rather than burned as a whole before being measured
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