01:830:301 Lecture Notes - Lecture 15: Color Vision, Electromagnetic Spectrum, Electric Light
23 Mar 2017
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The green disappear in the black and white vision because they have the same luminance and. Helps segment objects from background evolution point of view (in order to survive, and find berries, you need color color evolved because ripped fruit has a distinct color) What is color: color is property of light, color is a property of physical objects or their surfaces (because you can have red/green object/surface) Even if these two answers are correct, it is not satisfactory. The visible light is only a tiny fraction of the whole spectrum (that our eyes can detect) What is (physically speaking) different about a red versus a blue/purple. The energy is the same but the wavelength is different. wavelength: one peak to the next. There is no color because there is nothing extrinsic that makes the colors blue or red. These two have the same colors but the second square is all scrambled up.
