Sunlight
OverviewMeasurementComposition and powerIntensity in the Solar SystemVariations in solar irradianceSolar irradianceSurface illumination and spectrumLife on Earth
Sunlight is a portion of the electromagnetic radiation given off by the Sun, in particular infrared, visible, and ultraviolet light. On Earth, sunlight is scattered and filtered through Earth''s atmosphere as daylight when the Sun is above the horizon. When direct solar radiation is not blocked by clouds, it is experienced as sunshine, a combination of bright light and radiant heat (Atmospheric). When blocked