Domain: Humanities and Social Sciences — Geography
Target concept: Electromagnetic Spectrum: Band Color Schematic (Ultraviolet = Purple / Visible Light = ROYGBIV (Red, Orange, Yellow, Green, Blue, Indigo, Violet) / Infrared = Red / Microwave = Brown), with μm (micron) labels

Video generation prompt: This shows a color scale of the electromagnetic spectrum, with each band labeled by wavelength in micrometers from left to right.

Evaluation guide:
(i) Target concept: A static or smoothly revealed left-to-right schematic of the electromagnetic spectrum, encoded via standardized color-wavelength mapping for geographic/educational communication.
Minimum mechanism: The visualization must rely solely on spatial arrangement (left-to-right), discrete or gradient color regions, and textual μm labels: no animation of wave propagation, no spectral emission simulation, no interactive elements; color assignment must follow canonical conventions, not physics-based radiometric rendering.
(ii)Storyline: Frame 1: Entire spectrum bar enters view horizontally, fully formed or revealed left-to-right in one smooth motion; all five bands are simultaneously visible with no delay between segments. Each band maintains fixed adjacency: UV immediately left of visible, visible left of IR, IR left of microwave. All μm labels appear concurrently with their bands, positioned directly beneath and aligned center-relative-to-band. No camera movement, zoom, or rotation occurs; viewpoint remains front-facing and orthogonal. ROYGBIV within visible band must be resolvable as seven separate hues (not a blended rainbow nor a monochrome approximation), and must occupy a contiguous, unbroken region.

Manual:
Experimental Procedure
1. Display a horizontal color bar from left to right representing the electromagnetic spectrum.
2. Color segments: Ultraviolet = purple, Visible Light = ROYGBIV (Red, Orange, Yellow, Green, Blue, Indigo, Violet), Infrared = red, Microwave = brown.
3. Label each segment with its approximate wavelength range in micrometers (μm) beneath it, increasing left-to-right.
Observation of Experimental Phenomena
A continuous left-to-right color scale appears, with five visibly distinct bands, each uniquely colored and labeled with ascending μm values; the visible band shows seven adjacent, distinguishable colors in ROYGBIV order.
Summary of Experimental Principles
The electromagnetic spectrum is ordered by wavelength: shorter wavelengths (UV) are on the left, longer (microwave) on the right; color coding reflects physical conventions—UV (purple), visible light (ROYGBIV), IR (red), microwave (brown); wavelengths are measured in micrometers (μm) for this geographic-scale schematic.

Prompt Grounding rubric:
level_1: No spectrum bar or band schematic appears at all; there are no distinguishable colored segments, no numeric labels, and no left-to-right band arrangement.
level_2: A colored bar appears, but it is missing at least three of the following: a left-to-right arrangement of separate segments, numeric labels anywhere in the frame, four or more visually distinct segments, or any color contrast from one segment to the next (e.g., the whole bar is a single flat color).
level_3: A left-to-right bar shows at least four visually distinct, adjacent segments with some numeric labels present, but at least one segment has no label, two neighboring segments cannot be told apart, or the label values do not increase from left to right.
level_4: The bar shows five adjacent, visually distinct segments in a single left-to-right row, each carrying its own numeric label positioned beneath it, with values increasing from left to right across all five, but either the segment meant to represent visible light does not clearly show all seven ROYGBIV hues as distinguishable bands (some hues are missing, blurred together, or merged into a single smoothly blended gradient), or one label is partly hidden behind another element.
level_5: The bar shows exactly five adjacent, clearly distinguishable segments in one unbroken left-to-right row; the segment representing visible light shows all seven ROYGBIV hues (red, orange, yellow, green, blue, indigo, violet) as individually resolvable, nameable bands in left-to-right order (not a blurred or smoothly blended gradient), while the other four segments are each a single flat color; every segment carries its own numeric label, positioned directly beneath it, fully legible, non-overlapping, and increasing in value from left to right; the whole bar appears fully formed in one motion with no extraneous objects or camera movement.

Scientific and Causal Correctness rubric:
level_1: The colors assigned to the bands are scientifically arbitrary or reversed (e.g., the shortest-wavelength band is not purple while a longer-wavelength band is), or the numeric labels decrease from left to right instead of increasing, or the segment meant to represent visible light shows only one or two colors instead of a multi-hued progression.
level_2: Two or more bands use scientifically incorrect colors for their position (e.g., the ultraviolet band is not purple, the infrared band is not red, or the microwave band is not brown), or the numeric labels contradict the real wavelength ranges of these bands (e.g., visible light labeled in the hundreds of micrometers), or the visible-light segment is rendered as a single grey or white stripe instead of a range of colors.
level_3: All five bands carry plausible colors and numeric ranges, but one scientific detail is off: for example the visible-light segment's color progression skips indigo or violet, the ultraviolet band is colored blue rather than purple, the infrared and microwave bands are colored identically with no visual distinction, or the numeric labels mix measurement units inconsistently without indicating the conversion.
level_4: Ultraviolet is purple, infrared is red, microwave is brown, and the visible-light segment shows all seven ROYGBIV hues running from red through violet, with each band's numeric label falling within the generally accepted range for that part of the spectrum (UV ≈0.01–0.4 μm, visible ≈0.4–0.7 μm, infrared ≈0.7–1000 μm, microwave >1000 μm), but either one hue within the visible-light band is hard to distinguish from its neighbor, or one label's numeric range sits slightly outside the standard textbook figure while remaining the right order of magnitude and not misleading.
level_5: Ultraviolet is purple and labeled at roughly 0.01–0.4 micrometers; visible light shows all seven ROYGBIV hues (red, orange, yellow, green, blue, indigo, violet) as clearly distinguishable bands running red-to-violet, not a blurred or smoothly blended gradient, labeled at roughly 0.4–0.7 micrometers; infrared is red and labeled at roughly 0.7–1000 micrometers; microwave is brown and labeled as greater than 1000 micrometers; each band's numeric range sits entirely to the right of the previous band's range with no overlap, and neighboring bands show no color bleeding or hue confusion at their shared boundary.

Spatiotemporal Consistency rubric:
level_1: Segments jump to different screen positions between frames, whole segments vanish and reappear, colors shift abruptly partway through the clip (e.g., the purple ultraviolet segment suddenly turns red), or the image flickers or tears badly enough that no single segment can be viewed steadily.
level_2: Segment positions drift noticeably over the course of the clip (shifting by roughly a fifth of the bar's width or more), numeric labels jump from one location to another, or the visible-light segment flickers between its multi-hued look and a flat grey; at least two such disruptions occur.
level_3: Only minor drift is visible: the whole bar creeps sideways by less than about a tenth of its width over the clip, a label wobbles slightly in place, or one label is briefly hidden behind another element for a moment, but the segments stay in the same order and remain adjacent to each other throughout.
level_4: The segments and their labels hold their positions and left-to-right order for the entire clip with no visible drift, no label jumping, and no change in size; overall scene brightness stays even across the clip with no sudden dimming or flashing tied to any one segment.
level_5: The bar appears fully formed once and then stays visually still for the rest of the clip: none of the five segments or their labels can be seen moving, drifting, or resizing at any point, there is no flicker in brightness or color, and the viewing angle never changes (no zooming, panning, or tilting of the whole schematic).