Slide Rule in the Lecture Theatre

Use the attached reference photo as the identity reference: keep the same face, skin tone, hair and features as the person in that photo, without beautifying, aging or altering them. Create a square 1:1 museum-catalog frame with a strong first read and a slower second read at exactly 2880x2880 pixels. Location: an old lecture theatre with steep wooden seating and a demonstration bench. Show them in a brown herringbone jacket over a fine merino roll-neck, turning a demonstration handle one slow full revolution. Make one rigorous physical condition the conceptual engine: a long boxwood slide rule held mid-calculation, its hairline cursor bridging two logarithmic scales that multiply by sliding performs real mathematics through nothing but shaped matter and lawful motion. Explore why the slow, watchable version of a calculation feels more true; direct expression and posture toward grounded wonder, never melodrama or ad-like confidence. Use an eye-level 85mm portrait perspective with honest depth of field and no distortion. Make the composition let the mechanism's longest line lead toward their steady hands. Render it as gallery-grade technical realism built on lawful mechanism kinematics, precise engraved detail, tactile wood-and-metal textures, and emotionally intelligent portrait lighting, using diffuse overcast daylight held to gentle contrast so engravings stay legible and a palette of ebonized wood, dull steel, and one signal-red thread. Photorealistic: this must read as a real photograph from a physical camera, never an illustration, painting, or 3D render. Resolve real surface detail: fine lint on dark fabric, water spotting on steel, and the soft rounding of edges that have been used for years. Keep one identity-locked person, credible hands and fingers, natural fabric, and coherent scale, contact, reflections, shadows, airflow, deformation, and materials. Background people only when essential, always secondary and clearly different. Avoid steampunk goggles, glued-on decorative cogs, glowing holographic overlays, impossible gear meshes, and clock faces. No text, labels, logos, signatures, watermarks, random symbols, plastic skin, excessive bloom, or glossy AI finish.