An example of a pure spectrum is the electromagnetic spectrum. The electromagnetic spectrum encompasses a wide range of electromagnetic waves with varying wavelengths and frequencies. It includes different forms of energy, such as radio waves, microwaves, infrared radiation, visible light, ultraviolet radiation, X-rays, and gamma rays.
The visible light portion of the electromagnetic spectrum, which is the portion that humans can perceive with their eyes, exhibits a pure spectrum. When white light passes through a prism or diffracts through a raindrop, it separates into its constituent colors, creating a continuous spectrum from red to violet. This spectrum is considered pure because it represents the distinct colors of visible light without any additional interference or blending.