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Spectral Radiation Distribution

Light is nothing more than wavelengths, with each wavelength having a different spectral color. White light, on the other hand, is composed of several spectral colors of varying intensities. Consequently, the spectral radiation distribution also varies depending on the type of light source, since not every light source has the same spectral colors. However, the more colors a lamp’s spectrum contains, the better its color rendering. Incandescent bulbs, for example, have a very continuous color spectrum that covers a wide range of colors. With fluorescent tubes, on the other hand, some colors are more prominent than others, making their spectrum less continuous, and in daylight, the short-wavelength blue spectral colors dominate. LED technology has now even reached the point where it can reproduce all spectral colors. Thus, each light source has its own characteristic spectral radiation distribution, which is important for color rendering.

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