Hop41 on DeviantArthttps://www.deviantart.com/hop41/art/Parabola-circles-670637307Hop41

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Parabola circles

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MathIsBeautiful is doing some neat stuff. To see this person's work go to mathisbeautiful.deviantart.com  There is a nice construction of a parabola: Circles tangent to the directrix and passing through the focus. I tried my hand at doing this construction in Adobe Illustrator

I whomped up a spreadsheet to give me circle diameters. In the spread sheet I noticed a lot of numbers from my favorite sequence of primes hop41.deviantart.com/art/A-Pat…  . There was 41, 61, 113, 313, 421, and 1301 among the diameters. Don't know if there's a reason for that or if it's a coincidence.
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Neo128's avatar
Compelling image... Which is the reason I faved it sometime back... Does it have something to do with the "golden ratio"... I'm too lazy to look it up. :|