For the camera, a laser pulse is fired at a wall, and the impact of hitting the wall causes the particles of light to scatter.

CNN: A camera that can see around corners

His trademarks are all there: the quick, elliptical scenes, the unfussy fades to black, and the pulse of interest that can bring a camera hastening smoothly to inspect the characters, up close and personal, as their feelings ignite.

NEWYORKER: A Girl Cut in Two

Using a camera attached to a computer, smartphone or tablet, the tool can detect your pulse in just five seconds.

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