Jacque Lazarus NT 1310 Unit 7 Exercise 1 Fiber Optics –Definitions Crosstalk – Electronics undesired signals or sounds‚ as of voices‚ in a telephone or other communications device as a result of coupling between transmission circuits. Waveguides - A system of material boundaries in the form of a solid dielectric rod or dielectric-filled tubular conductor capable of guiding high-frequency electromagnetic waves. FTTH – Fiber-to-the-home the fiber reaches the boundary of the living space
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The First laser was developed in the 1970’s. A laser beam is generated in a glass tube with one side having perfect mirror and and the other having semi reflecting mirror. One of the mirrors is full reflective‚ and the other reflective 70% . The laser gas can be a mixture of He‚ CO2 and N2. This mixture of
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It can be installed with low-frequency radar beams that cannot be easily detected by culprits thus making the arrests that would otherwise have gone without being made. They can also be improved such that they can cover larger distances and maintain efficiency (Sood‚ 2008). This eliminates the risk
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Table of contents SERIAL NO: TITLE PAGE NO 1 ABSTRACT 1/24 2 INTRODUCTION 3/24 3 HISTORY 4/24 4
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total at least one question from each section. SECTION A Strain Energy & Impact Loading: Definitions‚ expressions for strain energy stored in a body when load is applied (i) gradually‚ (ii) suddenly and (iii) with impact‚ strain energy of beams in bending‚ beam deflections‚ strain energy of shafts in twisting‚ energy methods in determining spring deflection‚ Castigliano’s & Maxwell’s theorems‚
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__parallel_____ (Fig 1e). [pic] Fig 1e 2. Light rays and beams Objects that can give out light by themselves are called _luminous____ objects‚ for example‚ candles‚ the sun and light bulbs. Objects do not give out light by themselves are called __non-luminous_______ objects. Light consists of narrow rays travelling in __straight________ lines. A light beam is a stream of light. Figure 1f shows three kinds of light beams. |[pic]
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used to determine minimum thickness of various twoway slabs based on deflection: Minimum Suggested Thickness “h” for Two-Way Slabs Two-Way Slab System: Minimum Thickness h: Flat plate Ln/30 Flat plate with spandrel beams Ln/33 Flat slab Ln/33 Flat slab with spandrel beams Ln/36 Two-way beam-supported slab Ln/33 Ln = clear distance in long direction Flat Plates Flat plates are the most common type of two-way slab system. It is commonly used in multi-story construction such as hotels‚ hospitals‚ offices
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Section 13 Manufacturing Processes BY CHUCK FENNELL Program Manager‚ Dalton Foundries RAJIV SHIVPURI Professor of Industrial‚ Welding‚ and Systems Engineering‚ Ohio State University OMER W. BLODGETT Senior Design Consultant‚ Lincoln Electric Co. DUANE K. MILLER Manager‚ Engineering Services‚ Lincoln Electric Co. SEROPE KALPAKJIAN Professor Emeritus of Mechanical and Materials Engineering‚ Illinois Institute of Technology Professor of Mechanical Engineering‚ The City College of The
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et al‚2004.) 2. Minimize disruption and provide a quite environment by minimizing environment stimuli. Promotes relaxation 3. Eliminate vasoconstricting activities that may aggravate headache‚ e.g.‚ straining at stool‚ prolonged coughing‚ bending over. This activities increases vasoconstriction accentuates the headache in the presence of increased cerebral vascular pressure. 4. Medical collaboration in providing analgesics. Reduces pain and decrease stimulation of the sympathetic nervous
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bucking Star‚ like a punch thrown by an invisible god. He was aware of being flung backwards into the edge of a bench‚ the dull crack of metal against the base of his spine. The ship creaked violently and pitched into a tilt‚ downing slowly‚ almost on to beam ends. A clamour of terrified screams rose up from steerage. A hail of cups and splintering plates. A man’s bellow: ‘Knockdown! Knockdown!’ One of the starboard lifeboats snapped from its bow-chain and swung loose like a mace‚ shattering through the
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