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When I look in your eyes


When people say to each other something like "there is a universe hidden in your eyes" or "I'm lost in your eyes, my spirits rise to the skies", they are not exaggerating. There is actually a mathematical truth in these sayings!

Today, we will prove the following mathematical fact:
there exists a polygon in the human eye whose perimeter is equal to the circumference of the earth
In a circle of diameter 1 cm (about the size of the iris of the human eye), there exists a polygon whose perimeter is equal to the circumference of the earth (about 40,000 km)!