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Psychological Aspects to Light

Brightness - determined by the amplitude of the wave—how high or how low the wave actually is. The higher the wave, the brighter the light will be. Low waves are dimmer.

Color - or hue, is determined by the length of the wave.

Long wavelengths are found at the red end of the visible spectrum (the portion of the whole spectrum of light that is visible to the human eye), whereas shorter wavelengths are found at the blue end.

Saturation - refers to the purity of the color people see; mixing in black or gray would also lessen the saturation.

LO 3.3    Light

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