The elderly scientist carefully watches the laboratory experiment. Inside the transparent glass tube, one single bright golden light pulse appears and travels smoothly through the tube from left to right. Only ONE pulse. The pulse moves clearly through the center of the glass tube and briefly illuminates the surrounding glass and metal components as it passes. The scientist remains in the background, watching the moving pulse with focused scientific attention. The oscilloscope reacts with one single signal spike. Very subtle natural movement from the scientist. Slow cinematic camera push-in toward the experiment. Preserve the original laboratory, scientist, equipment, composition and lighting. Only one moving light pulse. No multiple pulses. No lightning. No explosions. No magical effects. No additional objects.
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