Super 8 Tri-X Black and White 
16 mm Tri-X Black and White 
16 mm Hi-Con 
Optical print, digital transfered.

 

Text from: 
Leonardo’s Rule, Self-Similarity, andWind-Induced Stresses in Trees

 

by Christophe Eloy

Department of Mechanical and Aerospace Engineering, University of California San Diego, published 12 December 2011.