What percentage of natural sunlight is made up of visible light?

Natural sunlight consists of a spectrum of electromagnetic radiation, and visible light represents a specific portion of that spectrum. It is known that visible light comprises approximately 40% of the total energy output of sunlight that reaches the Earth's surface. While the precise percentage may vary slightly depending on various factors such as atmospheric conditions, the commonly accepted figure is around 45% to 50%.

Although the selected answer suggests that 65% of natural sunlight is visible light, this figure does not accurately reflect the standard scientific consensus. The correct answer falls within the range closest to 50%, indicating that about half of sunlight is made up of visible light.

Understanding these percentages is essential for estheticians, as it relates to the energy received from sunlight, including how ultraviolet radiation interacts with the skin, and the importance of using sun protection to protect against skin damage.