Synopses & Reviews
Synopsis
Excerpt from An Essay on the Physiology of the Eye
Sir William Hamilton's assertion, that the power of seeing colour involves the power Of perceiving differences of colour, would then fall to the ground. For, in the event of our ability, simultaneously to inspect a blue and a red centre, a minimum visibile would be larger than a minimum visibile, which is absurd. And a fortiori for adjacent areas.
Again, although true that we can see two colours without our moving the eye, it does not follow, that the eye has not moved during the period in which the two colours were seen or, what is the same thing, that the two colours were perceived at once.
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