to project laser light shows. Today‚ Lissajous figures are generated with an oscilloscope‚ a type of cathode ray tube that provides a picture of electric signals in the form of a graph. Before digital frequency meters and phase-locked loops‚ Lissajous figures were initially used to determine the frequencies of sounds or radio signal. A signal of known frequency would be applied to the horizontal axis of an oscilloscope and the signal to be measured was applied to the vertical axis. The amplitude
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Two. This was a two-dimensional view of a tennis court that was displayed on an oscilloscope (see figure 2). This is believed to be the first video game that had been created (see figure 3) (Brookheaven national Laboratory)‚ (Scientific and Technical Information‚ 2008)‚ (TJB‚ 2007)‚ (Anderson‚ 1983). However‚ Thomas T. Goldsmith Jr and Estle Ray Mann have claimed to have created a game that they called the Cathode-Ray Tube Amusement Device that was patented in the United States on December 14‚ 1948
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3.1 CATHODE RAYS 3.1.1 Explain that cathode ray tubes allowed the manipulation of a stream of charged particles. DEFINITTIONS: * Cathode Ray Tube: is an evacuated tube which allows the unobstructed movement of cathode rays from a cathode to an anode. * Cathode Ray: Are negatively charged particles and can therefore be deflected. * This can be shown by 3 facts: * They leave –ve charge on the surfaces they strike * They are deflected by magnetic fields as predicted
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Career Episode 2 Chronology : xxxxxxxxx Geographical Location : xxxxxxxxxx Organization : xxxxxxxxxx Background ` : xxxxxxxx dr bo ok .c Title of Position om Introduction I had worked as vascular support engineer to support the cardio vascular imaging systems in the region assigned to me. I had taken the responsibility to manage the overall service delivery and ensure the customer satisfaction to the optimum level. I provided expert phone and/or onsite
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other displays have larger elements. The LCD screen is more energy efficient and can be disposed of more safely than a CRT. The inside of an LCD monitor basically comprises of 3 units: 1. LCD panel (the screen) 2. Backlight (a CCFL or cold cathode fluorescent light bulb) 3. Inverter (power supply unit) PROPERTIES Liquid Crystal Properties And Notebooks LCD Screens Liquid crystals are interesting because they don’t exactly fall under the three main states of matter: solid‚ liquid or gas
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REQUIREMENTS Equipment 1. General purpose oscilloscope (10MHz) 2. Function generators (1 Hz to 1 MHz) 3. Digital multimeter THEORY Lissajous patterns are formed when you combined periodic waves moving back and forth with periodic waves moving up and down. This exhibit does this electronically allowing the visitor to control the frequency of the X and Y motions independently. The resulting pattern can be observed on an oscilloscope and viewed on moving speakers. If the frequencies
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Dangers of electricity 4.5 Electromagnetic effects a. Electromagnetic induction b. a.c. generator c. Transformer d. The magnetic effect of a current e. Force on a current carrying conductor f. d.c. motor 4.6 Cathode-ray oscilloscopes a. Cathode rays b. Simple treatment of cathode-ray oscilloscope Atomic physics 5.1 Radioactivity a. Detection of radioactivity b. Characteristics of the three kinds of emission c. Radioactive decay d. Half-life e. Safety precautions 5.2 The nuclear atom a. Atomic model
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A. ENG237-02: Transients in RC and RL Circuits 0. Introduction The objective of this experiment is to study the DC transient behaviors of RC and RL circuits. This experiment has divided into 6 parts: 1. Charging curve from measured data ( R = 10M Ω and C = 4 mF ) 2. Draw the charging curve by the graphical method 3. Discharging curve from measured data ( R = 5M Ω and C = 4 mF ) 4. Draw the discharging curve by the graphical method 5. Display of the charging and discharging
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ABSTRACT Television has been an excellent medium for entertainment and information ever since the invention of the electron scanning tube in 1923 by Vladimir Kosma Zworykin‚ who is considered the father of the modern television. With the conversion to digital format 1080i in 1998‚ there has been a boom in the production of different types and technologies for Televisions. A new generation of televisions has been developed‚ including liquid crystal display (LCD)‚ rear projection‚ and high definition
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Galvani utilized electrical stimulation to demonstrate its effects on muscular tissue produces contraction and force. This electrical response was not quantified until the development of improved recording equipment‚ which included the cathode ray oscilloscope‚ by Gasser and Erlanger in 1922. Quantification of the amplifier and the oscillograph came later‚ and was done
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