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131Wagon-wheel effect — The wagon wheel effect (alternatively, or stagecoach wheel effect, stroboscopic effect) is an optical illusion in which a spoked wheel appears to rotate differently from its true rotation. The wheel can appear to rotate more slowly than the true… …
132Spring green (color) — Spring green is a color that is the color on the color wheel that is precisely halfway between cyan and green. When plotted on the CIE chromaticity diagram it corresponds to a visual stimulus of 505 nanometers on the visible spectrum. Spring… …
