What happens when colors merge in a continuous spectrum?

When colors merge in a continuous spectrum, they blend smoothly into each other, creating a seamless transition from one color to another. This is fundamental to the way light behaves in phenomena such as rainbows or the color spectrum produced by a prism, where colors like red, orange, yellow, green, blue, indigo, and violet flow into one another without abrupt changes.

In this context, a continuous spectrum represents all wavelengths of visible light rather than distinct lines of color. Each wavelength corresponds to a different color, and as you move through these wavelengths, the transition is gradual, producing a smooth gradient rather than a series of isolated bands of color. This characteristic is key for understanding how light and color work in physics, particularly in areas such as optics and wave behavior.