{
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  "prompt": "Wide cinematic photorealistic science-magazine scene for an elementary lesson about how rainbows form. The camera faces directly AWAY FROM THE SUN toward a rain shower, so the Sun is completely behind the viewer and must not appear anywhere in the image. ONE clean primary rainbow arc dominates the sky ahead, centered around the antisolar direction, physically plausible and elegant. RED is clearly the outer/top edge and VIOLET is clearly the inner/bottom edge, with orange, yellow, green and blue smoothly between. Fine rain and mist hang in the air beneath dark receding storm clouds; the foreground wet meadow and shallow puddles are softly illuminated by sunlight coming from behind the camera, with no visible solar disc or bright solar glow in the sky ahead. Natural restrained colour, realistic atmosphere, premium educational photography feel, uncluttered composition, no text and no diagram.",
  "negative_prompt": "text, words, letters, labels, captions, arrows, infographic, flowchart, prism diagram, sun, solar disc, visible sun, bright sun in frame, sunlight source in front of camera, bright horizon glow resembling sun, secondary rainbow, double rainbow, multiple rainbows, circular rainbow, rainbow with reversed colour order, violet outer edge, red inner edge, impossible geometry, neon rainbow, oversaturated fantasy colours, people, buildings, city skyline, watermark, logo, UI, poster, cartoon, anime",
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      "adapter_name": "lenovo"
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  "gpu": "NVIDIA GeForce RTX 4090",
  "generated_at": "2026-10-02T07:37:43-04:00",
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  "provenance_note": "Generation parameters and cryptographic hashes retained by Study Commons for reproducibility and provenance. AI generation does not itself guarantee absence of third-party rights.",
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  "requested_height": 720,
  "actual_width": 1280,
  "actual_height": 704,
  "width": 1280,
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