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Electromagnetics Application

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Electromagnetics Application
Laser Communicator
Reniel Joseph E. Bautista, Harris W. Guinomla, Jose Paulo Piloton and Khevin Anne A. Francisco, EECE, MSU-IIT

Abstract –This project involves discovering how wireless connections occur in the atmosphere using a beam of laser. The project, laser communicator, uses electromagnetic waves to transfer information without direct connection between the input and output devices. This project will also investigate how the sound waves are transmitted as electrical and light signals through a transistor radio, a transformer, a laser pointer, and a solar photoresistor. This project will employ the concepts of electromagnetism and sound waves. A transformer, which will be connected between the battery, and the laser pointer, will act as a modulator to control the voltage. As the sound is input via an audio device, sound energy will be converted as electrical impulses. These impulses will be converted to light signals through a laser beam. When the light energy is transmitted to the photoresitor by the laser pointer, the energy produced by the light will be converted into the electric signals which will power the output device. This idea is applied in space where laser beam such as infrared light is employed as the major source for data transmission. Definition of Terms:
1. LASER- a device that emits light (electromagnetic radiation) through a process of optical amplification based on the stimulated emission of photons. The term "laser" originated as an acronym for Light Amplification by Stimulated Emission of Radiation.
2. Photoresistor- A resistor whose resistance varies as a function of the intensity of light it is exposed to.
3. Audio Transformer- An iron-core transformer that is used for coupling audio-frequency circuits. I. Introduction
Communication is the activity of conveying information through the exchange of thoughts, messages, or information, as by speech, visuals, signals, writing, or behaviour. The various communication modes



References: [1] http://lasercommunicatorproject.blogspot.com/search?updated-max=2012-06-09T18:19:00-07:00&max-results=10&start=10&by-date=false [2] http://en.wikipedia.org/wiki/Laser [3] http://www.thefreedictionary.com/photoresistor [4] http://encyclopedia2.thefreedictionary.com/audio-frequency+transformer [5] http://www.youtube.com/watch?v=HKRPfa66_po [6] http://blog.makezine.com/2011/12/21/sending-secret-messages-with-simple-laser-communicator/ [7] http://www.nasa.gov/centers/goddard/news/releases/2012/12-074.html [8] http://en.wikipedia.org/wiki/Communication

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