phase whiteboard
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1 · one edge
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real space — the stripe field and one edge

phasor arc → amplitude

phase + phase − — k_∥, the component the edge feels

θ — angle between edge and k 60°

kℓ — stripe fineness × edge length 12.0

x = k_∥ℓ/2 = 3.00 · |sinc x| = 0.047

real space — drag the arrowhead / drag points

phasor chain — chord² ∝ χ_ℓ(k)

|A(k)|², log scale — k ∈ [−K, K]²

tessellation shown in the map