theory vs. practice

3 comments so far...

mramshaw October 01, 2010, 03:43 AM
Doing your homework, I see...
Perkin-warbeck October 01, 2010, 04:37 AM
The guides in the photo are Gimp's "golden section" guides. I was surprised at how well they fit the shell. Someone suggested that the golden spiral (or the fibonacci spiral) would give a perfect fit. I worked out the math and made another version of this photo with the fibonacci spiral overlaid on the shell. The fit was terrible! After doing some research, I discovered what others have already discovered: that the chambered nautilus does NOT follow the golden spiral! See
mramshaw October 09, 2010, 10:47 PM
Fun exercise. Logarithmic growth makes sense but the factor was unexpected.

The 'Rule of Thirds' (that should probably be 'Rules of Thirds') works about as well here as 'Golden Sections'.

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