I spent the better part of a winter in the basement darkroom at Hartwell Laboratory, watching silver halide crystals surrender their secrets one exposure at a time. The images we produced were not photographs in any conventional sense — they were interference patterns, the collective fingerprint of molecules oriented along a single axis, each scattering X-rays according to the periodicity of its arrangement.
The Geometry of Interference
Every diffraction image is a map of reciprocal space, not the thing itself. The bright spots near the center encode long-range periodicity — the broad repeating features of the molecular lattice. The fainter arcs near the edge carry fine detail down to individual bond lengths. Learning to read both registers at once, the wide and the narrow, took three full years of daily practice in that darkroom.
The image was not beautiful in any conventional sense. It was precise, symmetrical, and quite clearly the answer to a question we had been circling for years.