...In my opinion computers and technology is the wave of the future. Other people want everything simple. Computers solve complex problems. Computers also connect us though the internet and connect us world wide We use computers in our everyday life. My first point is Supercomputers have become a critical tool for analyzing Complex problems like climate change. And Counting: to solve mathematic problems - Navigation and astronomy Weather prediction. The computer was created to perform mathematical computations automatically and was Intended to be useful in a number of areas. It wasn't invented to solve any specific problem, but was conceived a a tool that could be developed to be useful in a number of areas. The original computers were slower than Humans at performing calculations, but the fact that something could now do them automatically was a Breakthrough in itself. Through time, the speed of computers has increased dramatically and their size has diminished. My second point is This is how the internet works The first thing your browser has to do is to establish a network connection to the machine where the document lives. To do that, it first has to find the network location of the host www.tldp.org (‘host’ is short for ‘host machine’ or ‘network host'; www.tldp.org is a typical hostname). The corresponding location is actually a number called an IP address To do this, your browser queries a program called a name server. The name server may live on your machine, but...
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...sinusoidal manner. These pulses cause distorted current wave shapes which in turn cause harmonic currents to flow back into other parts of the power system.” The problem with this phenomena is that current distortions cause voltage distortions. Which in turn creates waste in your system which is trying to supply the extra current needed to overcome the harmonics. It can also cause component heating and extra charges from your utility company for the excessive draw or disturbance to your neighbor’s power factor. What happens electrically is the ac voltage is ran through diodes which rectify the voltage, and charges a capacitor. The equipment being powered draws the high DC voltage powering the circuit, the capacitor is recharged over and over again. The capacitor only draws when the sine wave is at its peak. In industrial plants the most common causes of harmonics currents are three-phase and non-linear loads like electronic motor drives, and uninterruptible power drives, causes of harmonics in the commercial world are desktop computers, electric light ballasts, and dimmer switch applications. Identifying harmonics is not difficult when you know what signs to look for. As you tour your facility you can check transformers for excessive heat, examine transformer secondary current, and sub panel neutral checks. To verify you have harmonic issues you must use a true RMS multi-meter, these meters give more accurate wave readings than standard multi-meters. These meters read crest...
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... (Radio-Frequency Identification) RFID is the wireless non-contact use of radio-frequency electromagnet fields to transfer data. RFID tags are used in many industries to enter or exit buildings as well as buy certain things (mostly use in the government). It can also be attached to cash, clothing, and everyday possessions (such as cell phone, Laptops, desktop computers, tablets, etc.). Let me give you some history about where this technology came from In 1945 Leon Theremin invented an espionage or spying tool for the Soviet Union which retransmitted incident radio waves with audio information. Sound waves vibrated a diaphragm, which slightly altered the shape of the resonator that modulated the reflection radio frequency. So basically Leon Theremin created the processor for the RFID technology because it is being energized and activated by waves from an outside source. RFID uses signaling between the reader and tag is done in several different incompatible ways its all depending upon the frequency band being used. Tags operate on LF and HF bands, which use small radio waves to transmit signals. In the near electromagnetic field region the tag is closely combined electronically with the transmitter in the reader. The tag can increase the electromagnetic field created by the reader by changing the electrical loading. By changing the relative loads higher or lower the tag produces a change that the reader can detect. RFID is probably the most unknown...
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...On this assignment, I will explain reflection, refraction, and Optics. Refraction is the change in direction of a wave due to a change in its transmission medium. This is most commonly observed when a wave passes from one medium to another at any angle other than 90° or 0°. Refraction of light is the most commonly observed phenomenon, but any type of wave can refract when it interacts with a medium, for example when sound waves pass from one medium into another or when water waves move into water of a different depth. One real example is when you stick your hand in a pond or a lake, and it looks as if your forearm has been bent. Reflection is the change in direction of a wavefront at an interface between two different media so that the wavefront returns into the medium from which it originated. In computer science, reflection is the ability of a computer program to examine and modify the structure and behavior of the program at runtime. Reflection also occurs at the surface of transparent media, such as water or glass. An optical fiber is a flexible, transparent fiber made of extruded glass or plastic, slightly thicker than a human hair. It can function as a waveguide, to transmit light between the two ends of the fiber. The degragation of signal strength can be caused by light scattering, molecular level irregularities in the glass structure, and UV-Vis-IR absorption. References: Optical fiber - Wikipedia, the free encyclopedia. (n.d.). Retrieved August 3, 2014, from...
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...|School of Electronic Engineering and Computer Science | |ELE569 Microwave Electronics | |CAD Techniques for RF Electromagnetic – The Network Analyser | | | | | | | | | | | | | | | | ...
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...a signal transmitted on one circuit or channel of a transmission system creates an undesired effect in another circuit or channel. 2) Waveguide is a structure that guides waves, such as electromagnetic waves or sound waves. There are different types of waveguides for each type of wave. The original and most common[1] meaning is a hollow conductive metal pipe used to carry high frequency radio waves, particularly microwaves. 3) Fiber to the x (FTTx) is a generic term for any broadband network architecture using optical Fiber to replace all or part of the usual metal local loop used for last mile telecommunications. 4) Simplex communication refers to communication that occurs in one direction only. 5) A half-duplex (HDX) system provides communication in both directions, but only one direction at a time (not simultaneously). 6) A full-duplex (FDX), or sometimes double-duplex system, allows communication in both directions, and, unlike half-duplex, allows this to happen simultaneously. 7) Photodiode is a type of photo detector capable of converting light into either current or voltage, depending upon the mode of operation. 8) Amplitude modulation (AM) is a technique used in electronic communication, most commonly for transmitting information via a radio carrier wave. 9) Analog (or analogue) transmission is a transmission method of conveying voice, data, image, signal or video information using a continuous signal which varies in amplitude...
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...How to Succeed in Physics (and reduce your workload) Kyle Thomas, Lead Author Luke Bruneaux, Supporting Author Veritas Tutors, LLC How To Succeed in Physics | 2 About the Authors Kyle Thomas Kyle is currently a PhD candidate in the Psychology Department at Harvard University where he studies evolutionary social psychology and serves as a teaching fellow for graduate and undergraduate courses. Kyle has primarily tutored and taught Physics and Organic Chemistry through the UC Santa Cruz peer tutoring program where he became a program administrator. About Veritas Tutors Founded by two Harvard graduates in 2005, Veritas Tutors (www. veritutors.com) is the premiere provider of educational services and products in the Boston area. Offering subject tutoring, standardized test preparation, and admissions consulting, Veritas Tutors is dedicated to providing the best possible instruction to each of its students. Working with educators and consultants from Harvard, Yale, Columbia, MIT, and other elite academic institutions, our students all receive personalized guidance to achieve their goals in and out of the classroom. If you Luke Bruneaux have any questions, comments, or concerns, please contact us at info@ Luke holds a BA Summa Cum Laude from the University of Pennsylvania, veritutors.com or 1-877-265-6582. an MS from the University of Chicago and is working towards a PhD in physics at Harvard University. Luke was awarded a 2011 Derek Bok ...
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...Lab#2: Activity P41: Waves on a string Jonathan Alevy Physics 1302.101 Partners names: Henry Haws, Johnathan Rios & Miguel Castellano Pre-Lab Direct Calculation of the Linear Mass Density 1. Measure the mass of a known of the string. Length = L = 1.77 meters Mass = M = 5.7 x 10-4 kilograms µ = mass/length = 5.7 x 10-4 / 1.77m= 3.22 x 10-4 kg/m Table 1: Change Tension – Constant Frequency and Length Frequency = 120 Hz Length = 1.0 m T=mg T=mg Segments, n | Experimental Mass (kg) | Theoretical Mass (kg) | % difference: Exp-Theo | Tension, T (N) | 1/n2 | 1 | 1.84 | 1.89 | 2.78% | 18.0 | 1.00 | 2 | 0.463 | 0.473 | 2.14% | 4.54 | 0.250 | 3 | 0.207 | 0.210 | 1.44% | 2.03 | 0.111 | 4 | 0.113 | 0.118 | 4.33% | 1.11 | 0.0625 | 5 | 0.0720 | 0.0760 | 5.41% | 0.706 | 0.0400 | Slope= 18 The slope is equal to = 18; = 3.125 x 10-4 kg/m Linear mass density = 3.125 x 10-4 kg/m Table 2: Vary Frequency Tension = 4.9 N Tension = Mass x Gravity = 0.500kg x 9.81m/s2 = 4.9 N Length = 1.0 m Segments, n | Experimental Frequency (Hz) | Theoretical Frequency (Hz) | % difference Exp-Theo | 0 | 0 | 0 | 0% | 1 | 62.00 | 61.68 | 0.520% | 2 | 125.7 | 123.4 | 1.88% | 3 | 189.0 | 185.0 | 2.12% | 4 | 251.1 | 246.7 | 1.76% | 5 | 313.9 | 308.4 | 1.77% | Slope = 62.9 The slope is equal to = 62.9; =3.096 x 10-4 kg/m Linear mass density = 3.096 x 10-4 kg/m Table 3: Results Method | Linear mass density | % difference | ...
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...attitudes in understanding the nature of waves as carriers of energy. They become acquainted with the different types of waves, know the different characteristics and properties of each disturbance, and through the process, develop appreciation on the importance of wave to man’s life and his environment.Year Level Standards: Understand the nature of wave as energy carriers, differences between electromagnetic waves and mechanical waves, and their characteristics and properties | Waves | Number of Days – 20 days | Content Standards * Demonstrate understanding on: * the nature of waves as energy carriers and the wave properties of reflection, refraction, diffraction, and interference * differences between electromagnetic waves and mechanical waves and give examples of each * characteristics of waves, amplitude, crest, frequency, period, trough, and wavelength * different properties of waves | Performance StandardsConduct research works, carry out mathematical equations, and produce outputs that will reflect the existence of waves including their importance and impact to man and his environment | Lesson Number/Title | Key Understanding and Key Questions | Knowledge | Skills | Teaching Strategies | Assessment Strategies | Resources | 1. Vibrational MotionNumber of Days: 5 daysLesson Focus: * - Simple Harmonic Motion * -Kinds of Waves | KU:-Wave is an important component in the transmission of energy and information.-Knowing wave motion is essential in understanding...
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...Q1. A single slit diffraction pattern is produced on a screen using a laser. The intensity of the central maximum is plotted on the axes in the figure below. (a) On the figure above, sketch how the intensity varies across the screen to the right of the central maximum. (2) (b) A laser is a source of monochromatic, coherent light. State what is meant by monochromatic light .................................................................................... ...................................................................................................................... coherent light ............................................................................................... ...................................................................................................................... (2) (c) Describe how the pattern would change if light of a longer wavelength was used. ...................................................................................................................... ...................................................................................................................... (1) (d) State two ways in which the appearance of the fringes would change if the slit was made narrower. ...................................................................................................................... .................................................................................................................
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...One of the four assignments I chose that best supports the unit title, Energy in Waves Influencing our Lives, is on page 63. The title of this page is Mars Rover Drawing. It contains pictures of a rovers day on Mars. Another page is 65 which accommodates graphic notes about how we use waves everyday. Page 67 is titled Digital vs Analog signals. This page has notes comparing and contrasting the two waves. The last assignment is in google classroom called Influential Device Slideshow, and is slideshow about how a device influences our lives. Page 63 supports the unit title by showing how signals can help us discover new things that may impact our future. Page 65 shows how life would be without waves, and how waves influence our lives, which is the unit title. Page 67 goes further into how many waves are used in our daily lives . The assignment in google classroom, Influential Device Slideshow, conveyed that we use devices every day that must have waves to function....
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...Based on the results, the maximum frequency that would not be aliased was the Nyquist frequency, which was 5000 Hz. In addition to that, the amplitude of the loud voice was higher than the amplitude of the low voice. The number of bits calculated based on the quantization was equal to 9.97 bits. The high cutoff and the low cutoff which are 110 Hz and 1100 Hz, were used to show the Fast Fourier Transform of the filtered voices, which results in producing better voice of the recording. Based on the FFT graphs, the amplitude of the 440 Hz was the highest at the same peak, and that is why the sound was directly clear, and that proves that the played sound was with the frequency of 440 Hz. For the low and loud frequency, the graph showed the background noise recorded with the voice signal. The use of the decimating factor is that it will resample the recorded voice signal at a lower sampling frequency. Therefore, by changing the value of the decimating factor, the between 1 to 8, the sounds became more clear and recognizable. That is because the decimating factor, decrease the sample rate and increase the frequency of the voice signal in order to avoid the signal to be aliased. Based on research, the frequency range that the human voice can produce is in the range of 300 to 3000 Hz. The Fast Fourier Transform of recorded voice in this experiment was within the range of the human voice frequency. If the electret microphone element was used outside on a windy day, the FFT graphs...
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...Paradise I stepped off the hot, crowded plane and into the bright, dazzling sun light. The humid hit my face as if I were getting into a sauna; while the thick, moist air filled my lungs, I could feel the heat of the black pavement comfortably warming and basking my legs like a heater. My family and I finally made it to Hawaii. I was not always a fan of family vacations; somehow, something always seemed to go wrong. However, this vacation, nothing could ruin my fun. I took a deep breath and smelled a sweet, flower scent of intoxicating aromas. As my family and I entered the doors leading to the terminal, three girls in grass skirts approached us; they placed beautifully colored leis around our necks. I buried my nose into the damp, cold petals. I breathed in the exhilarating small of the pink and yellow flowers. We pushed our way through the crowded terminal, which was full of anxious and restless tourists waiting to get a glimpse of paradise. My Dad managed to get our luggage through the mobs of people, and we proceeded outside where my Aunt Rose was waiting to pick us up. My Aunt Rose was known for her crazy style of clothing and her big feathered hair. And to my surprise, off in the distance, a I little petite woman wearing a short pink dress stood across the street waving her arms. My aunt nearly tackled me to the ground as she hugged me, screaming in my ear and whip-lashing me from side to side. She always smelled of cigarettes and her perfume reminded me of a cheap brothel...
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...Geometric Gravity George Gabriel Geometric Gravity Science, the never ending pursuit of answers, it has solved many questions thought unsolvable. It has made the impossible possible time and time again. Yet one question has stood the test of time and to this day remains unanswered. How to unite gravity with the unified field theory or UFT. But to answer that question other questions must first be asked such as, what makes gravity? Scientifically what makes gravity is unknown, gravity is just this mysterious force that exerts itself on universal and atomic scales. We understand what it does but we don’t understand what makes it happen. Throughout my studies I have come across a consistent that I believe needs to be examined and that is, not only a correlation between the geometric patterns found in multi-year planetary orbits and those found when studying Cymatics but also the correlation of those to the orbital patterns of electrons around their nucleus on the atomic level. You may be asking yourself what exactly is Cymatics, or even perhaps what is this lunatic talking about? To begin to answer these questions I will describe Cymatics first. Cymatics is the study of visible sound and vibration, a subset of modal phenomena. Typically the surface of a plate, diaphragm, or membrane is vibrated, and regions of maximum and minimum displacement are made visible in a thin coating of particles, paste, or liquid. Different patterns emerge in the exitatory medium depending on...
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...| 3/5/2012 | | Mechanical Engineering Dynamics lab report.UFMEWL-10-2Vassos Tapakoudes | AIR TRACK Executive summary Demonstrate the patterns and relationships that stiffness and resonant frequencies follow under different circumstances on an air track. Stiffness is a measure of the resistance of a material to deformation under applied force. Resonant frequencies are the frequencies that a system appears to oscillate at greater amplitudes. Content Introduction pg.2 Theoretical calculations and background information pg.2 Experimental design and procedure pg.4 Analysis result and conclusion pg.7 Reflection to other experiment pg.9 Introduction The purpose of this dynamic Lab is to measure the stiffness and resonant frequencies of a coupled oscillator on an air track. Four experiments will be taken in order to see the behaviour and performance of the rubbers connecting the trolleys. Calculate theoretical results by using background information. Comparisons of theoretical and experimental results will be done to see errors and find conclusions. Resonant frequencies are the frequencies that a system oscillates at greater amplitudes. This type of oscillations is what makes systems to vibrate many times. On the other hand, stiffness is a measurement of the ability a material have to extend without deformation. Low stiffness can result in failure of a system and high stiffness is required in the design of systems that deformation...
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