When light hits a finger, the ridges of the fingerprint reflect one polarization of light, while the valleys reflect another.

当偏振光投射到手指上时，指纹的脊线将反射了光的一个偏振态，同时脊谷反射另一个偏振态。

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An infrared camera watches for spots where a finger (or similarly sized object) breaks the plane and scatters the light.

红外照相机聚焦的是一根手指(或者相似大小的物体)破坏水平面、散射光线的点。

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Rub your finger in a light matte1 shade and pat2 lightly on the outer corner of the browbone.

在一根手指上沾上一种无光的浅色，轻轻地拍在眉骨的外侧。

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The capacitive display was extremely responsive to our light finger taps and familiar multitouch gestures like two finger scrolling and pinching to zoom.

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It's worth noting at this point that the navigation buttons are a little light under your finger, and the fatter-thumbed can find themselves choosing the wrong option, like a last-second golf putting twitch.

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Light touches, such as resting your finger against an unused string, can trigger a note that'd otherwise be considered a mute.

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