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Several aspects of physics and electronics relating to communication technology were studied, enabling achievement of several goals. A speaker and microphone device was constructed which enabled the measurement of the delay between transmission and reception of an audio-electronic signal being audibly sent and received. This was used to measure the speed of sound within 12%. A similar device was constructed and used to calculate the speed of light within 5%. The physics concept of total internal reflection was used to transmit an electrical signal over an optical medium.