Theoretical modeling reveals golden angle phyllotaxis yields hexagonal cell geometry in sunflower seed packing, indicating a link between spiral patterns and continuous hexagonal symmetry.
FINDING: Sunflower seed packing is governed by the golden angle (≈137.507°), producing Fibonacci spiral phyllotaxis; Voronoi tessellation of such patterns yields near-hexagonal cells, bridging discrete packing to continuous hexagonal symmetry. | MATH: Golden angle = 360° × (1 − 1/φ) = 360° × (1 − 0.6180339…) = 137.507764…°; equivalently 2π/φ² rad. Fibonacci numbers F_n satisfy Fₙ₊₁ = F_n + Fn−1, with F_n → φ^n/√5 as n→∞. Seed position r_n = c√n, θ_n = n × 137.507…° (Fermat spiral). Voronoi cell area distribution for Poisson-Voronoi: mean area = 1/λ, variance ≈ 0.280λ⁻²; hexagonal regularity index approaches 1 for dense packing. | CONNECTION: Golden angle is the irrational rotation with maximal spacing (continued fraction [0;1,1,1,…] = 1/φ²), directly yielding 0.618 and 1.618. Voronoi cells of optimal packing converge to regular hexagons (crystallographic 6-fold symmetry, root system A₂, hexagonal lattice). The Poisson-Voronoi limit shows generic hexagonality — a symmetry-breaking Author: Andrew Stewart Caldin, Independent Researcher, UK. Part of the E8 Intelligence Research series. Platform: e8intelligence.com
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Andrew Stewart Caldin (2026) studied this question.
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