Suggest a way to determine if the body is a source of light or a sacred body.

For this it is necessary to exclude all external light sources. For example, place a body in a closed room and extinguish the light, if the body shines, then it is a source of light, if not, then it is a source of reflected light.



One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.