The speed of light in a vacuum, commonly known as c, is important in many areas of physics. Its value is exactly 299,792,458 meters per second (approximately 186,280 miles per second). According to special relativity, c is the maximum speed that any object or information in the universe can travel...By: slaveboy2000
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from Instructables: exploring - technology - robots http://ift.tt/1JJ0XWQ
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