Investigatory Projects in Physics | Repulsorlifts as a Method of Stable Magnetic Levitation | Repulsorlifts were used in the study to find out if they can be used to replace the wheels of a conventional car. It was hypothesized that it will be able to lift a car using magnetic repulsion forces. The different magnets were tested individually with the usual tests for magnetic strength‚ size‚ and temperature increase‚ which were done in the preliminary testing. The prototype road and car were
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to organize network traffic‚ along with the network’s size‚ its topology and its organizational intent. The communication media used to connect devices to form a computer network include electrical cable (HomePNA‚ power line communication‚ G.hn)‚optical fiber (fiber-optic communication)‚ and radio waves (wireless networking). In the OSI model‚ these are defined at layers 1 and 2 — the physical layer and the data link layer. A widely-adopted family of communication media used in local area network
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by transference of energy from another circuit (as by leakage or coupling) Waveguides- a device (as a duct‚ coaxial cable‚ or glass fiber) designed to confine and direct the propagation of electromagnetic waves FTTH- the installation and use of optical fiber from a central point directly to individual buildings such as residences‚ apartment buildings and businesses to provide unprecedented high-speed Internet access. Simplex- allowing telecommunication in only one direction Half-Duplex- the transmission
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two conductors are twisted. 3. Shielded twisted pair – Twisted pair cabling is a type of wiring in which two conductors are twisted 4. Fiber optic cable – a cable made of optical fibers that can transmit large amounts of information at the speed of light. 5. Dark fiber – Dark fiber or unlit fiber is unused optical fibers available for use in fiber optic communications. 6. Coaxial cable – a transmission medium used for high frequency signals. 7. Plenum – Plenum cable is cable that is
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A process for the preparation of racemic phenylethylamine which comprises contacting an optical antipode therefore‚ e.g.‚ L(-) or D(+)-1-phenylethylamine with sodium amide or sodium hydride. Claim: What is claimed is: 1. A process for preparing racemic 1-phenylethylamine which comprises contacting L(-)-1-phenylethylamine or D(+)-1-phenylethylamine with 0.01 to 1 weight percent‚ based on theamount of said phenylethylamine‚ of sodium amide or sodium hydride at a temperature of 70.degree. to 150
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electromagnetic waves are propagated in microwave and RF communications. The wave passing through the medium is forced to follow the path determined by the physical structure of the guide. 3. FTTH: Short for fiber-to-the-home‚ the installation of optical fiber from a telephone switch directly into the subscribers home. Fiber optic cable is an alternative to coaxial cable. 4. Simplex: refers to one-way communications where one party is the transmitter and the other is the receiver. An example of
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VISAYAN MUSIC INSTRUMENTS PERSONAL FACTORS-our unhealthful practices can dispose us and other people ECONOMIC FACTORS-poverty creates a sense hopeless on the poor discrimination ‚nutrition‚ hygiene CULTURAL FACTORS-belief that can provide us with false sense of security thus delaying healthcare and appropriate treatment ENVIRONMENTAL FACTORS-unsanitary conditions and the presence of toxic chemicals hazardous
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Chapter 3 Review Questions 1-18 (page 130) 1. When determining the appropriate hardware components of a new information system‚ what role must the user of the system play? When determining the appropriate hardware components of a new information system‚ the user of the system must assemble an effective and efficient system. The user should select and organize components while understanding the trade-offs between overall system performance and cost‚ control‚ and complexity. The user involved in selecting
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from EMI. Has no shielding. Shielded Twisted Pair (STP) Same as the UTP cables except it is shielded in a metal sheath around it to stop external interference. Fiber-Optic Cable A cable that uses glass to transmit data using light waves. Dark Fiber Optical fiber that has already been laid but is not currently being used. Coaxial Cable A Cable that is commonly used in audio and video. It connects to cable television to televisions and also used in cable internet modems. Plenum The space between the ceiling
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development or implementation of a strategy. Kirkham Instruments was a manufacturer of laboratory analytical equipment with turnover of £450M in 1995. The company was organized into four divisions: the Mass Spectrometer Division; the Chromatography Division‚ a manufacturer of gas and liquid chromatographs; the Optical Equipment Division which manufactured optical comparators‚ microscopes and related equipment; and Waterloo Instruments Ltd.‚ which was acquired in 1992 and was a Belgian manufacturer
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