Explain how a yellow dress with blue spots will appear on stage when the red light is shone on it.

When a yellow dress with blue spots is illuminated by a red light on stage, the yellow fabric will absorb the red light and reflect the green and blue wavelengths. This will cause the yellow areas of the dress to appear more vibrant and stand out against the blue spots. The blue spots, on the other hand, will absorb the red light and appear darker and less prominent compared to the yellow areas. Overall, the dress will have a striking contrast between the yellow and blue elements, creating a visually interesting and dynamic appearance under the red lighting.

Under red light, a yellow dress with blue spots will appear:

Dress: Black
Spots: Black

Explanation:

- Red light is the complementary color of cyan (blue-green).
- Yellow reflects red light, but it absorbs cyan light.
- Blue reflects cyan light, but it absorbs red light.

When red light shines on the dress:

- The yellow dress absorbs the red light, so it appears black.
- The blue spots also absorb the red light, appearing black.

As a result, both the dress and the spots will not reflect any light, making them appear black.