Abstract
The physics behind the sometimes strange effects and ‘unnatural’ appearance of
near-infrared (NIR) photographs is discussed in terms of reflection, absorption
and transmission of NIR radiation with the respective objects. Besides
discussing howNIR cameraswork, several visible and NIR photograph pairs are
presented, which include vegetation, naturalwater, clouds, the sky, and humans.
In addition, some physics-oriented experimental NIR images are presented
which clearly demonstrate some of the basic physics behind some of these
awesome sights