Illinois Golden Ratio

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Illinois Golden Ratio
Found by Gthurman
City
State Illinois
Country United States
Continent North America
Posted on Apr 15, 2006
Map Location 42° 19' 23" N, 90° 16' 7" W
Numbers 84, 20
Type Constant
Loading map...
Gerald Thurman felt this sign was a stretch, but it's a sure winner containing Fibonacci's golden rato. This sign also brings Illinois to Road Sign Math, joining the slew of other states that have embraced mathematically significant roadsigns.

20060415-IllinoisGoldenRatio.jpg

Mr. Thurman applies slide-rule-like-deftness to get this winner.

\log{\sqrt{85 \times 20}} \approx 1.61265 \approx \varphi

This sign is in the northwest corner of

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