Feature
Non-Line-of-Sight Imaging
Computational imaging techniques, sensitive photon detectors and considerable imagination are creating techniques for 3-D imaging of objects around corners and behind walls.
[Background: Getty Images / Composite image: Alessia Kirkland]
Light travels in straight lines. This simple observation was the basis, in the 17th century, for Isaac Newton’s corpuscular theory of light. In the absence of any external force, particles travel in straight lines, so a “particle” theory of light, such as Newton’s, can capture much of what we see in our everyday experience.
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