Which of the following best defines visible light?

Visible light is best defined as electromagnetic waves that the human eye can see. The visible spectrum ranges approximately from 380 nanometers (violet) to about 750 nanometers (red) in wavelength. This narrow band of the electromagnetic spectrum is what enables us to perceive colors, allowing us to experience the world visually.

Understanding visible light is essential in optics because it is the portion of the electromagnetic spectrum that interacts with our visual system, making it fundamental for activities such as photography, vision, and the study of light behavior. Other forms of electromagnetic radiation, such as infrared or ultraviolet light, exist outside this range and are either invisible to the human eye or may have different effects on matter, but they do not fall under the definition of visible light.