Golden Curve

the back of it:

www.flickr.com/photos/119967028@N08/34714113531/in/photos...

 

see Evan Zodl's Fibonacci Waves:

www.flickr.com/photos/ezorigami/8469490960/

 

see more about this:

www.google.com.hk/url?sa=i&rct=j&q=&esrc=s&am...

 

Some knowledge related:

erkdemon.blogspot.com/2009/06/fibonacci-series-tiling-wit...

www.relativitybook.com/CoolStuff/erkfractals.html

mathworld.wolfram.com/PolygonalSpiral.html

Done