keannu
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- Dec 27, 2010
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This might need some scientific knowledge, and my first feeling was "If the moon is compared to small objects around it on the horizon, due to the relative size, it may look bigger" but this is saying "the farther the moon, the larger it looks", which is unclear to me. If someone understands it clearly, please let me know.
ex)An illusion that has puzzled man for hundreds of years is the moon illusion - the fact that the moon looks larger near the horizon than when it is overhead. In actuality, of course, the moon does not change size, and the image cast on the retina is the same whether the moon is overhead or at the horizon. What, then, is the cause for such a difference? One theory holds that when the moon is seen in context - that is, in relation to its background - objects in the background provide distance cues. Since we think of the moon as being farther away than the trees and buildings seen with it on the horizon, we perceive it as larger. In other words, if the retinal image of an object remains constant, an increase in apparent distance will produce a corresponding increase in perceived size.
st73
ex)An illusion that has puzzled man for hundreds of years is the moon illusion - the fact that the moon looks larger near the horizon than when it is overhead. In actuality, of course, the moon does not change size, and the image cast on the retina is the same whether the moon is overhead or at the horizon. What, then, is the cause for such a difference? One theory holds that when the moon is seen in context - that is, in relation to its background - objects in the background provide distance cues. Since we think of the moon as being farther away than the trees and buildings seen with it on the horizon, we perceive it as larger. In other words, if the retinal image of an object remains constant, an increase in apparent distance will produce a corresponding increase in perceived size.
st73