Which type of electromagnetic energy is visible to the human eye?

The type of electromagnetic energy that is visible to the human eye is visible light. This range of electromagnetic radiation falls between infrared light, which has longer wavelengths, and ultraviolet radiation, which has shorter wavelengths. The human eye is specifically adapted to detect this range of wavelengths, which typically spans from about 380 nanometers (violet) to around 750 nanometers (red).

Visible light plays a crucial role in various applications such as photography, lighting, and vision. The ability to see colors is reliant on the various wavelengths of visible light and how they are processed by the photoreceptors in our eyes. Thus, anything outside this spectrum, like infrared (associated with heat), ultraviolet (linked to skin reactions and not visible), and X-rays (high-energy radiation used in medical imaging), are not perceivable to humans, making visible light uniquely significant for our day-to-day perception and interaction with the world.