Solar radiation spectrum and colar of light

There is a spectrum of wavelengths, each corresponding to a distinct form of energy: the radiation we see is visible, in which case different wavelengths in the spectrum correspond to different colours. The shorter waves-ultra-violet, visible and near infra-red-have their origin in sunlight, while the longer waves in the infrared region are principally emitted by the Earth and atmosphere.
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             the electromagnetic spectrum of importance in the Earth's atmosphere.
             The solar radiation spectrum.
             The electromagnetic radiation emitted by the sun shows a wide range of wavelengths. It can be divided into two major regions with respect to the capability of ionizing atoms in radiation-absorbing matter: ionizing radiation (X-rays and gamma-rays) and nonionizing radiation (UVR, visible light, and infrared radiation). Fortunately, the highly injurious ionizing radiation does not penetrate the earth's atmosphere. .
             Solar radiation is commonly divided into various regions or bands on the basis of wavelength.Ultraviolet radiation is that part of the electromagnetic spectrum between 100 and 400 nm. It is, in turn, divided rather arbitrarily from the viewpoint of its biological effects into three major components. Spectral bands of incoming solar energy and atmospheric effects. .
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             Spectra of nonionizing solar radiation (A) and ultraviolet radiation (B) showing main radiation bands, their nomenclature, and approcimate wavelength limits. other synonyms: UV-A, black light; UV-B, sunburn or erythemal radiation; UV-C, germicidal radiation .
             Color of Light.
             The colors produced by light passing through a prism are arranged in a precise array or spectrum from red through orange, yellow, green, blue, indigo and into violet. The order of colors is constant, and each color has a unique signature identifying its location in the spectrum. The signature of color is the wavelength of light.
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             The electromagnetic spectrum, which encompasses the visible region of light, extends from gamma rays with wave lengths of one hundredth of a nanometer to radio waves with wave lengths of one meter or greater.