Shadows or shadow beings often appear in homes when the energy is low. Here's a prayer you can say to keep them at bay.

A shadow is a dark shape made when light is stopped or blocked by an object or a person. Some objects are opaque such as stone, metal and wood. This means light doesn't travel through them.

thus casting a shadow of its own. Sometimes light can interfere with other light, but that’s not really the same thing: the dark patches in an interference pattern aren’t shadows so much as ...