To comment on a different aspect: There are many examples of
*images of the invisible*. If invisible means not able to be
seen with the naked eye. Atomic force microscopes make images of
individual atoms whose size is less than the wavelengths of
visible light. In the movies *silence of the lambs*, and the one
with Harrison Ford and the Irish terrorists, the villains used
night vision equipment to image what otherwise couldn't be seen.
In the episode: When Jesus held up the coin and said "Whose
EIKWN and inscription is this?" I would take it that the
response to this, by those present at the time, was not just an
intellectual recognition of visual likeness. It was an
existential apprehension of the reality of the presence and
power of the imperator. (Not physically of course, coin usage
defined the extent of the ruler's authority.) The modern
perception can be illustrated if I may subvert William James'
language, (ie this is not an actual quote from the famous
American psychologist), *create the image and the