What does it mean if there is a shadow when it is quiet?

Answer 1

Not all naturally occurring phenomenon can or should be considered to be supernatural in origin.

Before assuming the shadow has occult causality, check the room.

Shadows are generally cast by a light source, however, not all light sources are as obvious as a light bulb or candle in a room.

The light casting the shadow may be reflected in a mirror or other shiny (and therefore reflective) surface.

It may be from a secondary light source, for example the moon or a street light shining in a window from an angle that makes it less obvious from where you are in the room.

Shadows that are accompanied by localized temperature changes in the room; move on their own without being caused by say a tree blowing in the wind outside; or appear in a room that has no non-metaphysical light sources MIGHT be of supernatural origin.