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a telecommunication system that transmits images of objects (stationary or moving) between distant points
electronic equipment that converts sound into electrical signals that can be transmitted over distances and then converts received signals back into sounds
two words are homophones if they are pronounced the same way but differ in meaning or spelling or both (e.g. bare and bear)
machine in which rotating records cause a stylus to vibrate and the vibrations are amplified acoustically or electronically
a percussion instrument with wooden bars tuned to produce a chromatic scale and with resonators
process by which plants and some other organisms use light energy to convert water and carbon dioxide into oxygen and high-energy carbohydrates such as sugars and starches
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