Quote:
Originally Posted by Lo Zeno
Speaking from a purely physical point of view, the light emitted from a light source and the light reflected by an opaque body is identical except for its intensity (aka its energy) and the frequencies involved (the frequency spectrum of light is what gives us the perception of colors).
Photons are photons are photons, to put it in internet language. When light is reflected from an opaque body, some of its energy heats the body and some is reflected: the reflected part is the light that your eyes catch.
If you diminish the intensity of the light of a light source, you can reach the same intensity of light "usually reflected" by opaque objects: in case of a Samsung LCD computer monitor, it means to reduce its brightness to 21% and raise its contrast to maximum (remember, contrast is not brightness).
But yeah, the photons remain photons.
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I would say that a LCD emits a liiiitle light if it has its brightness reduced PLUS the light that is reflected coming from ambient conditions, never the same as a eink display. The amount of photons will never be the same, to be exact.