Move a prism into a white-light path and reveal a screen spectrum

Original, untested video brief. No input image or generated result is supplied.

1. Task and boundary

Move one clear triangular prism into an existing narrow white-light path so a separated color band appears on a fixed receiving screen. Keep the screen and source steady throughout. The shot should connect the prism entering the path with the changed screen projection.

This untested plan needs plausible prism-and-screen geometry in the authorized input. Exclude colored lamps, floating spectral ribbons and wavelength or refractive-index claims.

2. Authorized first frame

Use a photograph or accurate drawing you own or have permission to use. Show a white-light source aimed through a narrow slit toward a plain screen. The triangular prism starts beside the light path on a small sliding support, with its orientation already suitable for a visible screen projection.

Show prism faces, support and screen together in an oblique view. Leave screen space beside the white patch for the band. Clear air need not display a glowing beam; do not invent fog to make the path visible.

3. Use the generator

Open the current image-to-video generator in a mode accepting your authorized first frame. Paste the prompt; check settings and cost before submission. Nothing runs automatically.

4. Prompt and timing

Start from my authorized image of a narrow white-light setup aimed at a fixed plain receiving screen, with one clear triangular prism beside the path on a sliding support. Keep the camera, lamp, slit, screen and prism orientation fixed. Slide the original prism slowly sideways into the existing light path once. As it intercepts the light, let the screen projection change locally from the original white patch toward a displaced, separated band of colors. Keep the color band on the receiving screen, with its visible shape following the screen plane. Preserve the original prism edges and transparent faces; do not turn the prism itself into a rainbow emitter. Retain an unaffected screen area as a brightness and identity reference. No floating rainbow ribbon, glowing beam in clear air, extra lamp, changing screen artwork or whole-scene color wash. Stop when the prism is fully in the path and hold the resulting screen band steady. No camera move, cut, lettering, numerical spectrum or repeated insertion.

1. Establish, first fifth: locate the initial white patch, screen corner and prism beside the path.
2. Insert, middle three fifths: compare the screen during early, partial and full interception while following the same prism edges.
3. Hold, final fifth: stop the sliding support and inspect the localized color band on the unchanged screen.

5. Inspect the output

For each check, record a frame or time, observation and pass, fail or inconclusive judgment.

• The lamp, slit and screen stay fixed while the prism translates without rotating.
• Projection changes occur as the prism intercepts the existing light path, not before motion begins.
• The separated colors appear on the receiving screen rather than as solid objects in the air.
• Prism edges, support and screen corner preserve identity through intermediate frames.
• The unaffected screen area stays recognizable instead of participating in a global rainbow transition.
• If the input geometry does not establish where light meets the prism and screen, mark the causal connection inconclusive.

6. Fix one failure

• A rainbow floats in space: constrain all visible separated colors to the receiving screen plane.
• The prism changes into colored glass: preserve its transparent faces and place the changing projection only on the screen.
• The entire scene shifts hue: retain a plain unaffected screen region and fixed white illumination.
• The band appears before insertion: make partial interception a distinct middle beat and inspect that transition.
• The spectrum leaves the frame: provide a wider receiving screen in the authorized input rather than moving the camera.

7. Ending and limits

Finish with the original prism stationary in the light path and a stable separated color band on the same screen.

Save your result, authorized input, exact prompt, settings and inspection notes.

No H3 output, measured spectrum, optical efficiency or wavelength accuracy is supplied. A plausible generated band cannot validate the depicted apparatus or a material specification.

The transparent-object task studies background displacement through a fixed object during camera travel. Here a prism enters a fixed illumination path and changes a screen projection into separated colors. Different prism decoration would not create another task.