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The Magic Cafe Forum Index » » Magical equations » » Phi day coming (1 Likes) Printer Friendly Version

Jimso
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For the mathemagic geeks among us, I wanted to point out the next January 6 (1/6/18) will be a significant Phi day*, which the media will undoubtedly bring to public attention. It will present a perfect opportunity to show our stuff. The question is, does anyone know of magic tricks involving this number? To be clear, I am not looking for tricks that use some hidden principle involving Phi, but any that openly celebrate the glory of Phi in any of its many variants. We have almost a year to discuss ideas and maybe come up with some gems.

*Phi (also known as the golden ratio, the divine proportion, and other names) is a naturally mysterious number (approximately 1.618) that shows up in astonishingly diverse ways. If you are unaware, do a quick search on the internet or consult one of the many books written about it.
Larry Barnowsky
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In my book Magica Analytica I included between main chapters a little prediction effect based on Phi, The Golden Ratio.
It's on pages 80 and 94.
The letter Phi was chosen to honor Phidias a Greek architect who used the Golden Ratio in designing the statues in the Parthenon. It also is the Greek letter which sounds like F, in honor of Fibonacci. The ratio of pairs of numbers in the Fibonacci sequence converges to Phi = 1.6180339887...

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Jimso
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Phi day is here. Is there no one but Larry who knows any tricks with Phi? It has so many mysterious and interesting properties, it should be a natural.
wunceaponatime
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Phee phi pho fum
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