We derive two fundamental quantum phenomena—half-integer spin and orbital stability—from a single geometric principle: double saturation of quantum indeterminacy. By postulating that stable quantum states require simultaneous saturation of both spatial (∆x · ∆p = ℏ/2) and temporal (∆E · ∆t = ℏ/2) uncertainty relations, we explain why ground states persist indefinitely while excited states decay, and why fermions exhibit the characteristic 720° phase return. The derivation follows from elementary geometry: double saturation yields λ = 4πr, and since 4π ≈ 12.566 falls between integers 12 and 13, quantized systems must oscillate between discrete configurations—the dynamic pattern observed as spin-1/2. Remarkably, π’s presence in Planck’s constant (h = 2πℏ) has been signaling circular geometry for a century, yet formalism’s elegance obscured this simple foundation. The framework deliberately eschews abstract mathematics in favor of physical geometry. Sometimes, less is more: two century-old mysteries resolved in half a page of basic geometry. The goal is not novel prediction but ontological clarification: explaining the geometric origin of established phenomena rather than forecasting new ones.
Daniel Avilés Hurtado (Sun,) studied this question.
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