Visibility of No Reflection
Name: Brian F.
Is an object that reflects no light whatsoever visible?
It all depends on what was surrounding it. If you put your black sphere near something that
does reflect light (at various random wavelengths) you will surely see the sphere. You would
see the sphere because it would block light waves that are being reflected from other materials
that DO EMIT LIGHT.
Your eyes / brain would detect that it was, in fact, there since it is hindering other
'emissive materials' that are trying to get their light reflections to your eyes. My
assumptions here are that your "sphere" has 0% light reflectance therefore it must have
100% light absorbance.
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Update: June 2012