‘Visualizing the Invisible: Resonance, Water and Light as Photographic Event’ traces a four decade investigation into photography as physical event rather than descriptive mechanism. Spanning the caustic works of the Vanitas, Glass and Ophelia series through to the recent Cymatic Water + Light body of work, this essay proposes that invisible forces — resonance, pressure, frequency, surface tension — do not require invention. They require conditions through which they become legible. Working exclusively in analogue process, Alexander James Hamilton constructs systems in which frequency, liquid and light are brought into controlled relation. The resulting photographs are not representations of these forces but their material consequence. Authorship, in this context, is not diminished through physical process. It is intensified by it.