Problematic Sunflower

Alex Bellos discusses how the Incans used knots in string (Quipu) to record numbers.Check out Brilliant (get 20% off their premium service): https://brillian...

Is our sunflower falling short of its Fibonacci destiny?

Check the blog for pics and more details - http://periodicvideos.blogspot.co.uk/2012/07/sunflower-missing-spiral.html

The flower on Flickr: http://www.flickr.com/photos/numberphile/7650953626/in/photostream

Turing's Sunflowers: http://www.turingsunflowers.com/