trout Posted December 5, 2006 Report Share Posted December 5, 2006 And how do we know red is red it could be purple the only reason we think of the colour red when we say red is that is what we been told. Who decided red was going to be red....... I used to say something to that effect. However, light is made up of varying wavelengths which are constant. In the back of each of our retinas are "cones" and "rods" affected by these specific wavelengths .. so each of us (unless these retinal areas are damaged or malfunction eg. colour blindness) view the same wavelengths. So you seeing "red" light means I also see "red" light rather than "green" for instance. Yes, we are all taught the "names" of these viewable wavelengths ... but we do actually all see the same "colour", per say. Quote Link to comment Share on other sites More sharing options...
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