Question

Under which condition we can see the shadows during night

Answer 1

without fire or energy it must be a night with bright moon

Answer 2

Answer:

To see a shadow, there must be a source of light and an object that blocks that light. Sources of light may be natural (sunlight or moonlight) or artificial (incandescent, fluorescent or halogen lighting). When an object blocks the beam of light shining on it, a shadow appears.