quarta-feira, julho 01, 2015

Seeing the invisible

Seeing the invisible seems paradoxal. Yet it can be so simple...
Below, not only we can 'see' the transparent water, but also we can map its depth and find 'invisible' floating sand using the shadows. Or we can estimate the position of the sun relative to the observer (both invisible in the photo), infer the hour of the day, or...
A good model can do wonders, a bad model can lead to disaster.

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