HP Color 9850mfp HP Color 9850mfp - System Administrator Guide - Page 148
About colors, RGB and CMYK models
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About colors RGB and CMYK models Have you ever wondered why the world surrounding us appears colored to our eyes? Light is made up of electromagnetic waves with wavelengths between about 380 - 780 nm, also called visible rays. The wavelengths of visible rays can be separated into the rainbow colors: violet, indigo, blue, green, yellow, orange, and red. They appear in this sequence, starting with the shortest wavelength. When all the wavelengths of the visible rays strike your eye at the same time, white color is perceived. We see the objects in color because they reflect or transmit visible light of different wavelengths or frequencies. 3 4 2 1 5 8 10 9 6 7 1 (nm) 2 (m) 3 Slit 4 Prisms 5 White light 6 Visible rays 7 Electromagnetic wave 8 Light 9 Reflection 10 Color 136 Color image adjustment ENWW