Everywhere I turn‚ I see someone on a cell phone‚ either talking or texting. Every car next to me in traffic has a GPS on the dashboard‚ including my own. It seems that everyone needs some help from technology on a daily basis. It both surrounds and intrigues us. Technology can be helpful‚ fun‚ and entertaining. Much of technology is created to assist with making projects faster or daily tasks more efficient. However‚ the collaboration of technologies in our lives has a few negative effects and I
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shown in the surfaces. They also radiate almost perfectly. The temperature of the black body object determine the distribution of colors or wavelengths in the admitted line. A good example of black body radiation is the heat inside a stove‚ electromagnetic radiation light and heat exist in a form of standing waves‚ waves like the vibration of a guitar string is attached in both ends. The ends of the standing waves do not move‚ the are attached to the side of the stove‚ and many waves exists with
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XRD – X-Ray Diffraction X-ray diffraction (XRD) is a powerful non-destructive technique for characterizing crystalline materials. It provides information on structures‚ phases‚ preferred crystal orientations (texture)‚ and other structural parameters‚ such as average grain size‚ crystallinity‚ strain‚ and crystal defects. X-ray diffraction peaks are produced by constructive interference of a monochromatic beam of X-rays scattered at specific angles from each set of lattice planes in a sample. The
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be measured electrically. Classification based on property is as given below: Temperature - Thermistors‚ thermocouples‚ RTD’s‚ IC and many more. Pressure - Fibre optic‚ vacuum‚ elastic liquid based manometers‚ LVDT‚ electronic. Flow - Electromagnetic‚ differential pressure‚ positional displacement‚ thermal mass‚ etc. Level Sensors - Differential pressure‚ ultrasonic radio frequency‚ radar‚ thermal displacement‚ etc. Proximity and displacement - LVDT‚ photoelectric‚ capacitive‚ magnetic
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Blackbody Radiation Lab 11 Go to http://phet.colorado.edu/simulations/sims.php?sim=Blackbody_Spectrum and click on Run Now. 1) In this lab‚ you will use the Blackbody Spectrum Simulation to investigate how the spectrum of electromagnetic radiation emitted by objects is affected by the object’s temperature. In this simulation‚ you can input the temperature and observe the spectrum of the radiation emitted. a) The temperature of stars in the universe varies with the type of star
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P1 AQA – Revision Notes 1. Heat Transfer • Thermal radiation = infra-red radiation (beyond red part of visible spectrum) • Surface of sun is 5500 degrees. • Greenhouse effect is the idea that the earth is a greenhouse‚ and the atmosphere is glass that stops substances exiting or entering. • DARK‚ MATT SURFACES emit more radiation than shiny‚ light ones‚ and absorb radiation better. • Conduction: free electrons are given energy where heated and diffuse – this energy is passed on as electrons
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present Memory – knowing the past Thinking – knowing the future Cognition = the influence of perception‚ memory‚ and thinking Aug 29th‚ 2012 Basic principles of perception 1. Stimulation - Many kinds of energy implode on the body o Electromagnetic energy (light) o Mechanical energy -Pressure waves in air Pressure on skin Body movement o Thermal energy (heat) o Chemical energy (molecules in air‚ food) - Energy changes detected by receptors 2. Information a. Our sensory systems
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PART I PHYSICS & CHEMISTRY EXAMPLE FOR DIFFERENT TYPES OF QUESTIONS Instruction: The Question cum answer booklet contains 39 questions including sub question of match the following and main questions. 1. Due to heavy traffic near the school the department of traffic police wants to install automatic traffic lights. This am be done by using the Principle of a) Raman effect b) Radiography c) Holography d) Photoelectric effect 2. Water is to be sterilized for drinking purpose without using any chemicals
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NANYANG TECHNOLOGICAL UNIVERSITY School of Electrical and Electronic Engineering Laboratory Experiment ------------------------------------------------- ------------------------------------------------- ------------------------------------------------- Laboratory Report ------------------------------------------------- ------------------------------------------------- For ------------------------------------------------- -------------------------------------------------
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effects locally and detect them at a distance. Keywords: I. INTRODUCTION It is known that electromagnetic energy is associated with the propagation of electromagnetic waves. Theoretically‚ we can use all electromagnetic waves for a wireless power transmission (WPT). The difference between the WPT and communication systems is only efficiency. Maxwell’s Equations indicate that the electromagnetic field and its power diffuse to all directions. Though we transmit energy in a communication system
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