Seismograph Tracing Tremors in Puebla Twilight

Indigo twilight fills a laboratory room in Puebla where a seismograph sits on a dark wooden desk. The instrument's needle moves steadily, drawing a jagged black line across a sheet of white graph paper. Condensation beads form on the cold, brushed metal casing of the machine, glistening under the low ambient light. Outside the window, the wet, rainy season air is visible as a blur of dark green foliage and distant city lights. The graph paper shows previous straight lines interrupted by the new, erratic tremors. The needle tip hovers just above the inked path, showing the precise moment of ground movement. A small red indicator light glows faintly on the side panel, casting a soft reflection on the condensation.