Question

why the face of person sitting around us in the campfire apperas to be shimmer​

Answer 1

Answer:

The faces of persons sitting opposite to us around a camp fire appear to shimmer because of the refraction of light. The reflected rays of light from the face of a person, sitting opposite to us, get refracted as they pass through the hot air (produced by the burning of wood)

Answer 2

Explanation:

the face of person sitting around us in the campfire phase 2? Because of the Fire medium