Fehérfény

Fehérfény is a Hungarian term that translates to "white light" in English. It refers to light that contains all the visible wavelengths of the electromagnetic spectrum. In physics, white light is often considered to be the result of combining light sources that emit a broad spectrum of colors, or by filtering a broader spectrum of light. The perception of white light by the human eye is a complex process involving the cones in the retina.

In everyday language, white light is what we typically encounter from sources like the sun or incandescent light bulbs. However, the exact spectral composition of "white" light can vary depending on the source. For instance, sunlight appears whiter than the light from an incandescent bulb, which tends to have a warmer, more yellowish tint. Artificial lighting is often designed to mimic daylight, aiming for a color temperature that approximates the sun's spectral output.

The concept of white light is fundamental in fields such as optics, color theory, and photography. Understanding the properties of white light is crucial for phenomena like color perception, how objects appear colored, and how light interacts with different materials. The purity of white light, meaning the evenness of its spectral distribution, is a key characteristic.