{
  "schema": 1,
  "asset_role": "Study Commons Daily Read hero",
  "slug": "why-metal-feels-colder-than-wood",
  "generator": "QwenImage21Pipeline",
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  "scheduler": "FlowMatchEulerDiscreteScheduler",
  "torch_dtype": "bfloat16",
  "profile": "cinematic",
  "prompt": "Wide cinematic educational science illustration about why metal feels colder than wood even when both are at the same room temperature. In one coherent classroom scene, show one child centered behind a clean table, with the child's full upper torso, both shoulders, both forearms, and both hands clearly connected and visible. The child simultaneously places the left hand flat on a smooth stainless-steel block and the right hand flat on a similarly sized unfinished wooden block, positioned side by side. Both objects have clearly been sitting together in the same room under identical ambient lighting, with no ice, frost, steam, sunlight hotspot, heater, refrigerator, or other cue suggesting different actual temperatures. Emphasize realistic material contrast: reflective brushed metal versus warm-grained wood. The child should look curious and mildly surprised, not distressed. Preserve normal anatomy: exactly two arms, exactly two hands, five fingers per hand, no cropped or detached limbs, no extra person. The image should communicate a fair comparison and invite the idea that heat leaves the hand faster through metal, without arrows, thermal colors, labels, equations, captions, or text. Polished science-magazine illustration, realistic but clearly illustrative, balanced 16:9 hero composition, classroom-friendly, no brands, no logos, no watermark.",
  "negative_prompt": "text, captions, labels, readable numbers, equations, arrows, thermal camera colors, red-blue heat map, thermometer, ice, frost, snow, steam, smoke, fire, heater, refrigerator, sunlight beam heating one object, wet surfaces, gloves, extra hands, extra fingers, fused fingers, missing fingers, malformed hands, duplicated arms, touching the same object with both hands, floating objects, fantasy glow, brand, logo, watermark, stock photo watermark",
  "seed": 2026092707,
  "width": 1280,
  "height": 704,
  "num_inference_steps": 20,
  "true_cfg_scale": 4.0,
  "lora": [
    {
      "name": "Lenovo UltraReal",
      "local_path": "loras/qwen21_lenovo_diffusers/lenovo_qwen21_diffusers.safetensors",
      "sha256": "d730587495418000fd801017137d1c2b73fade2cf4beb648282a8bb000cfe654",
      "weight": 0.65,
      "adapter_name": "lenovo_ultrareal"
    }
  ],
  "reference_images": [],
  "gpu": "NVIDIA GeForce RTX 4090",
  "generated_at": "2026-09-27T16:22:59-04:00",
  "output_png": "study_metal_wood_hero_20260927_seed2026092707.png",
  "output_png_sha256": "e539de716828563dfc8a950b5ce8831c096054b8003c1fdef1eaa910cf041386",
  "generation_seconds": 39.616,
  "requested_width": 1280,
  "requested_height": 720,
  "actual_width": 1280,
  "actual_height": 704,
  "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.",
  "postprocess": {
    "format": "AVIF",
    "encoder": "ffmpeg libaom-av1",
    "crf": 30,
    "pix_fmt": "yuv420p",
    "source_png_sha256": "e539de716828563dfc8a950b5ce8831c096054b8003c1fdef1eaa910cf041386",
    "output_avif_sha256": "602198596255c1ee5e68d73b8c6cd8ddff15cbbe26e240fa87c67cf1e44cef3b"
  }
}