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  1. Sunlight - Wikipedia

    Sunlight is a key factor in photosynthesis, the process used by plants and other autotrophic organisms to convert light energy, normally from the Sun, into chemical energy that can be used to synthesize …

  2. Sunlight | Definition, Wavelengths, & Facts | Britannica

    Dec 24, 2025 · Sunlight, solar radiation that is visible at Earth’s surface. The amount of sunlight is dependent on the extent of the daytime cloud cover. Some places on Earth receive more than 4,000 …

  3. Solar Radiation Basics - Department of Energy

    Solar radiation, often called the solar resource or just sunlight, is a general term for the electromagnetic radiation emitted by the sun. Solar radiation can be captured and turned into useful forms of energy, …

  4. Absorption / reflection of sunlight - Understanding Global Change

    When sunlight strikes the Earth, it is mostly reflected or absorbed. Reflected light bounces back into space while absorbed light is the source of energy that drives processes in the atmosphere, …

  5. Sunlight - Energy Education

    Sunlight, also known as solar radiation, refers to the incoming light to the Earth that originated from the Sun. This light represents a portion of the electromagnetic spectrum that includes infrared, visible …

  6. Sunlight Spread Out into a Spectrum - Science@NASA

    Jul 2, 2021 · (Red light waves are longest, and violet light waves are shortest.) This rainbow is known as the visible spectrum. In addition to visible light, sunlight also contains significant amounts of infrared …

  7. Sunlight - Wikiwand

    Sunlight is the portion of the electromagnetic radiation which is emitted by the Sun and received by the Earth, in particular the visible light perceptible to t...