τ = B/P, where B is Behavior and P is Pattern, two of the four PNBA primitives. TL = Ω₀/10 = 0.136899099984016, with Ω₀ = 1.36899099984016 GHz. Noble: τ = 0. Locked: 0 < τ < TL_IVA (0.88 × TL). IVA Peak: TL_IVA ≤ τ < TL. Shatter: τ ≥ TL.
A stretched string is a load B against a holding rigidity P, the same threshold shape as the Tacoma bridge and shattering glass. Here the dial is calibrated so the source's qualitative break point sits at τ = TL. After the break, each new pair has equal B on both charges, so B_out = |B₁ − B₂| = 0 by Same-B Necessity and each pair is Noble.
The simulator does not claim a measured value for string tension or pair energy; it inherits the Layer-0 boundary from the formal reduction at [9,9,3,22].