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The experiment fit on a folding table. A polished cavity, a loop antenna, a vector network analyzer scavenged from an auction, and a tangle of low-noise amplifiers. Hansen talked while Mira listened: they had observed a sharp, temperature-dependent shift in the resonance frequency that did not track thermal expansion or dielectric changes. The magnitude was tiny — parts per billion — but persistent across runs and equipment swaps. Mira liked that. Small signals often hid important constraints. hmdscience.com physics

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