Material film and color
In our daily life, we encounter various kinds of radiation, such as cosmic rays, X-ray rays, ultraviolet rays, visible light, infrared rays, microwave, radio and other electromagnetic radiation. Closely related to human life is the solar radiation spectrum that can reach the ground, ranging in wavelength from 250 nanometers of ultraviolet to 2.5 microns of near-infrared. Among them, visible light accounts for about 52-54% of solar radiation energy, while in visible light, 380nm purple light to 760nm red light, and 480nm to 550nm greenish-yellow light accounts for about 10-11% of solar radiation energy.
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