Final answer:
When light travels through different materials, it can bend or refract at the boundary between them. The specific colors or wavelengths of light can be separated and referenced using a prism or similar methods.
Step-by-step explanation:
When light travels through different materials, its speed can vary. This change in speed causes the light to bend or refract at the boundary between the materials. The amount of bending depends on the difference in speeds between the two materials.
The end result is that the band of light referenced at the end would depend on the specific colors or wavelengths of light being used. Different colors of light have different wavelengths, and they can be separated and referenced using a prism or other similar methods. So, Led Zeppelin, Rolling Stones, Pink Floyd, and Hanson are not the bands being referenced here, but rather wavelengths or colors of light.
Learn more about Refraction of light