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Past speculation about canals on Mars is an example of ________.
Ewald Hering
A 19th-century physiologist known for his work on color vision and spatial perception.
Young-Helmholtz Theory
A theory of color vision proposing that the eye contains three types of color receptors, each sensitive to red, green, or blue wavelengths of light.
Wavelengths
The distance between two consecutive points of the same phase in a wave, often determining its characteristics like color in light waves.
Afterimages
Visual phenomena that occur after staring at a visual stimulus for a prolonged period, resulting in seeing an image even after looking away.
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