our naked eye. We also cannot see the stars and planets tha tare very far from Earth. Limitation of sight is whereby a person is able to see an object‚ colour‚ shape until a certain extend. Limitations of sight can be overcome by using appropriate optical devices such as microscope‚ telescope‚ periscope and others. Limitation Of Hearing We cannot hear all the sounds around us. The range of frequency of hearing in human is from 20 Hz to 20 000 Hz. It is different according to the age of a person
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step index fiber It is an optical fiber which has a core of constant refractive index.there are two types of step index fibers:single mode si and multi mode si fiber single mode step index fiber has only one mode of EM propagation (HE11) an has a core diameter of about 8-12 Um. and multi mode si has many mode of propagation and has a core of diameter of about 50 Um which allow many no of modes through it. single mode step index has an adv of lower inter modal dispersion as there is only
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the copper cables. These cables are widely used in offices or residential areas. Copper cables transmit information through electrical signals. It has been used as a speaker system wire‚ telephone wire‚ computer cable wire etc. for over years now. Optical fiber comprises of plastic or glass strands to transmit data or information digitally with the use of light rather than electricity. On the other hand‚ copper cable encompasses of a single thread of copper. The size of the cable varies depends upon
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ITT TECHNICAL INSTITUTE NT1310 Physical Networking GRADED ASSIGNMENTS Student Professional Experience Project NSA SPE Project 1 (to be completed by the end of NT1310): Install‚ Configure‚ Test‚ Maintain and/or Document the Worksite Local Area Network and Its Components Purpose The purpose of the Student Professional Experience (SPE) project is to provide you an opportunity for work experience in your field or in a related field to add to your résumé. You may have an opportunity to serve
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Max Haney NT1310 Physical Networking Unit 10 Assignments 11/18/2014 Physical Networking Unit 10 Assignments Unit 10 Assignment 1 Fiber-Optic Installation – Conduit is pipe. It can be metallic‚ nonmetallic‚ flexible‚ or rigid(depending upon local codes) and runs from a work area to a telecommunications room to the equipment room. One advantage of using conduit to hold the cables is that conduit may already exist in the building. A drawback to conduit is that it provides a finite amount of space
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Educational Portal‚ and the Online Students’ Result and Transcripts processing. The CITM has one policy‚ they do things themselves‚ they believe in capacity building and minimum consultancy. The Centre provides a network that runs on the campus fibre Optic. THE STRUCTURE OF THE CITM The CITM is divided into Units that are headed by Head of Department. The Units are underlisted: 1. Hardware Systems and Training Department 1. Network and Web Services Department
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Transmission media lie below the physical layer. We can evaluate transmission media by throughput‚ propagation speed‚ and propagation time. * A guided medium provides a physical conduit from one device to another. Twisted-pair cable‚ coaxial cable‚ and optical fiber are the most popular types of guided media. Twisted-pair cable consists of two insulated copper wires twisted together. Twisting allows each wire to have approximately the same noise environment. Twisted-pair cable is used in telephone lines
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much longer period Solution Requirements Must have: Scratch resistant property of 6H even after the antireflection coating is applied without compromising on the optical & physical properties of the lens. Nice to have: Scratch resistant property of 7H even after the antireflection coating is applied without compromising on the optical & physical properties of the lens Expected deliverables A process that will ensure a harder scratch resistant coating of 6H which would withstand the
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Digital Multilayer disk formally known as Fluorescent multilayer disk is an optical disc format developed by D Data Inc. It is based on the 3D optical data storage technology developed for the Fluorescent Multilayer Disc by the company Constellation 3D. The change of name is due to frailer of the company called Constellation 3D due to a Swiss partner failing to provide finance to run the operation‚ later Constellation was taken over by a company called D Data Inc who reintroduced the technology under
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Sunday March 31‚ 2013 (before 11: 55 pm): 1.Differentiate between guided media and unguided media 2.What are three important characteristics of a periodic signal 3.Define funamental frequency 4.What is attenuation? 5.Describe the components of optical fiber cable. 6.Indicate some significant differences between broadcast radio and microwave. 7.What is the difference between diffraction and scattering? 8.List and briefly define important factors that can be used in evaluating or comparing the
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