我们是用两个分隔开的眼睛看东西的。一个就是视网膜中央凹,一个用来看颜色并察觉出细节的中间地带。而这个区域周围的地方则更擅长察觉位移、影子、光亮及黑白对比。
When we look at a person's face, according to Livingstone, we usually focus centrally on the eyes. Gazing at Mona Lisa's eyes, our less accurate peripheral vision notices the mouth, picking up shadows from the cheekbones.
照Livingstone所说,当我们在注视一个人的脸时,我们经常都会集中注意在Ta的眼睛。在凝视蒙娜丽莎的眼睛时,我们并不是那么精准的外围视力就注意在嘴巴上了,而嘴巴上则覆有脸颊骨的阴影。
The shadows play visual tricks, hinting at the curve of a smile. But when we look directly at the mouth, our central vision doesn't see the shadows, and so the smile suddenly disappears. As our eyes scan different parts of the portrait, Mona's smile seems to fade in and out.
就是这个阴影在视觉上给我们开了玩笑,它(在嘴上)隐藏了微笑的曲线。但当我们直视她嘴巴的时候,我们的中心视力并不能看到该阴影,所以微笑就立刻消失了。随着我们眼睛看画像部位的不同,蒙娜丽莎的微笑也就时有时无。
Did da Vinci intend to create this flickering smile effect? Perhaps. In any case, he was genius enough to paint shadows subtle enough to astound viewers for half a millennium. Meanwhile, Mona Lisa will keep smiling. And not.
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