Each of us lives on big earth family‚ the earth provides us wealthy resources and energy .Nowadays，with rapid development of human science and technology‚ people crazy grab the earth’s resources‚ especially after the second industrial revolution accelerated the lighting industry and undoubtedly exacerbate the greenhouse effect and exhausted the earth energy. people crazy mining coal to generate electricity‚ harmful gas and dust and coal combustion has aggravated the earth’s atmospheric pollution
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18th‚ 2012 Identifying Metallic Components Introduction: Spectroscopy is the study of the electromagnetic radiation emitted or absorbed by the atoms and molecules. A photon in short is light. Atoms produce light by putting energy in‚ the electron then becomes excited and goes up an energy level‚ the electron then falls back down to its ground state‚ and out comes a photon (light). The electromagnetic spectrum contains color that we can and cannot see. The color blue has the highest energy with
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------------------------------------------------- Refractive index From Wikipedia‚ the free encyclopedia In optics the refractive index (or index of refraction) n of a substance (optical medium) is a dimensionless number that describes how light‚ or any other radiation‚ propagates through that medium. Its most elementary occurrence (and historically the first one) is in Snell’s law of refraction‚ n1sinθ1= n2sinθ2‚ where θ1 and θ2 are the angles of incidence of a ray crossing the interface between two media with
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Chapter 1 Key Terms; Name: Connor Newell Date: 8/8/11 Allergist- a physician who specializes in determining the substance to which an individual is allergic and who treats such allergies. Allergy-a condition in which and individual has a low tolerance of such things such as pollen‚ ragweed‚ dogs‚ cats and sometimes specific foods. American Red Cross-a national organization that certifies individuals in first aid and cardiopulmonary resuscitation procedures. It also sponsors other services such
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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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Chapter 1 Introduction to D.R.D.O 1.1 Defence Research and Development Organization DRDO was formed in 1958 from the amalgamation of the already functioning Technical Development Establishment (TDEs) of the Indian Army and the Directorate of Technical Development & Production (DTDP) with the Defense Science Organization (DSO). DRDO is 50 labs strong and is deeply engaged in developing Defense technologies covering disciplines like aeronautics‚ armaments‚ electronics‚ combat vehicles‚ engineering
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X-radiation (which is composed of X-rays‚ hence the name) falls under electromagnetic radiation. X-rays and gamma rays are sometimes confused‚ but they are different‚ as X-rays are emitted by electrons outside the nucleus whilst gamma rays are produced inside the nucleus. X-rays have extremely small
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considerably. The requirement of the system is that it is to be installed without any cables attached to the sensor nodes. This calls for wireless communication‚ and that for that antennas are needed. A train is a difficult environment to transmit electromagnetic (EM) waves in. It is full of metal and EM-waves cannot pass through a conducting material. Having much metal in its vicinity also affects the function of the antenna. This needs to be taken into consideration when making the design. The constructed
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Liannys Polanco 02.05 Electron Arrangement and EMR: Line Spectra Lab Worksheet Before You Begin: You may either copy and paste this document into a word processing program of your choice or print this page. Procedure Access the virtual lab and complete the experiments. Part One (Flame Test): Create and complete a data table for Part One of the lab. It should include the name of the element (or unknown) examined and the color of the observed flame Identify each unknown from Part One of the
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properties of this spectrum include also waves‚ which can be any length‚ and define the spectrum of electromagnetic radiation. Ranging from gamma rays to radio waves‚ an electromagnetic spectrum includes each phase of light that can be detected by all organisms‚ not just humans. Light and matter have a perfect relationship in which matter emits and absorbs light in a series of electromagnetic waves and particles. Their interaction produces wavelengths that are mainly charged electrons. Essentially
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