April 2021
Intermediate to advanced
336 pages
9h 54m
English
Content preview from Light — Science & Magic, 6th Edition
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REFLECTION AND THE FAMILY OF ANGLES 45
little of the light reected from any of the black plastic items photographed
reached the camera. As a result, the plastic now looks black.
We did have to open our aperture by about two stops to compensate for
the neutral density of the polarizing lter. How do you know that we did
not accidentally miscalculate the exposure? (Maybe we did so deliberately,
just to get the image dark enough to prove our point.) e feather proves
that we did not. e polarizer did not block the diuse reection from the
feather. So, with accurate exposure compensation, the feather is about the
same light gray in both pictures.
Is It Polarized Reflection or Ordinary Direct Reflection?
Polarized and un-polarized direct ...
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