What part of the electromagnetic spectrum can humans see?

The correct answer is visible light because it represents the portion of the electromagnetic spectrum that is detectable by the human eye. Visible light encompasses wavelengths from approximately 380 nanometers (violet) to 750 nanometers (red). This range allows humans to perceive colors and forms in our environment, making it essential for daily activities and interactions.

Infrared light, ultraviolet light, and X-rays lie outside the visible spectrum and cannot be seen by the human eye. Infrared light has longer wavelengths than visible light, while ultraviolet light has shorter wavelengths. X-rays, being even higher in energy, are not visible and are used in medical imaging due to their ability to penetrate tissues. Understanding the limits of human vision in relation to the electromagnetic spectrum is fundamental for anyone involved in fields that utilize various forms of radiation.