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Posted on June 18, 2009 | 55 Views

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Happy Phi Day! Phi, also known as the Golden Ratio, is the irrational number equal to aprx. 1.618033...(not to be confused with that other curious ratio, Pi, which has its own day on 3-14). Phi is used in astronomy, architecture, and the Fibonacci Sequence. On June 18, 1178, five Canterbury monks saw "two horns of light" on the moon's surface, and it was later proposed they were witnessing the formation of Giordano Bruno crater. source>>>

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