Shape and structure, from engineering to nature

1. Natural form, questioning, and theory 2. Mechanical structure 3. Thermal structure 4. Heat trees 5. Fluid trees 6. Ducts and rivers 7. Turbulent structure 8. Convective trees 9. Structure in power systems 10. Structure in time: rhythm 11. Transportation and economics structure 12. Shapes with constant resistance About the author Author index Subject index.