11.Light can travel in three ways from a source to another location: (1) directly from the source through empty space; (2) through various media; (3) after being reflected from a mirror.
12.When light is block by an object a dark area or Shadow is formed.
13.It seems we have evolved to need and enjoy light. As well as being an important source of vitamin D, it enables sight and provides a natural daily rhythm. There is some evidence that the amount of natural light we are exposed to improves our sleep patterns and therefore our mental health.
Answers & Comments
11.Light can travel in three ways from a source to another location: (1) directly from the source through empty space; (2) through various media; (3) after being reflected from a mirror.
12.When light is block by an object a dark area or Shadow is formed.
13.It seems we have evolved to need and enjoy light. As well as being an important source of vitamin D, it enables sight and provides a natural daily rhythm. There is some evidence that the amount of natural light we are exposed to improves our sleep patterns and therefore our mental health.
14.No answer.