Wednesday, February 2, 2011
Few things about the light
White light is really a mixture of waves of different lengths and what's involved, different colors ranging from blue through green, ending in the red. The scope of the visible spectrum below shows the graphic illustration. Radiation at wavelengths shorter than violet is called ultra-violet, while the waves longer than red are called infrared radiation. The human eye registers the specified portion of spectrum known as visible waves. Photographic and digital sensors are so designed as to record the same spectral range, which captures our eye. White light is a mixture of all colors, but when one of them begins to dominate the resultant color of light changes. Our eye is able to automatically adapt to a fairly broad range of such changes, and usually we see the color properly, while the digital sensor that possibility in itself does not, and record exactly what is in reality.