One of my readers dropped me a quick line to ask if mediums can see in the dark.
This is a great question!
Spirits and other energy-based entities are not solid matter. Some of them are able to appear as solid, three-dimensional objects (or nearly so), but it is an appearance only. You could pass your hand right through them. At least some level of light in the visible spectrum is necessary for the human eye to see physical objects.
Therefore, since spirits are not solid, physical objects, light is unnecessary for the medium to see them.
Each medium has one or more gifts which enable them to hear, see, or otherwise sense spirits. The gift(s) and skill(s) vary from one medium to the other.
The bottom line, though, is that the medium is perceiving the energy and consciousness of the spirit.
©2014 Jeff McKeehan – All Rights Reserved