Wavelength (nanometers)

FIGURE 8.7 The electromagnetic spectrum, from gamma rays that have wavelengths less than a trillionth (10~12 or 0.000000000001) of a meter to radio wavelengths that can exceed 10 kilometers. The visible part of the spectrum occurs between the ultraviolet and infrared regions, with wavelengths between approximately 380 and 750 nanometers (10~9 meters). The distribution of visible colors in clear oceanic waters (solid line) and turbid coastal waters (dotted line) is shown, with blue and green being the deepest penetrating. Modified from Sumich (1996).

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