The next type of light we will look at is back-lighting.
Back-light is basically any light that is coming directly towards you, with the subject in between. It may surround the edges of the subject, or filter through it, but either way, back-lighting adds a level of strength to light that is often in contrast to the lack-lustre or contrast-less direct light striking the subject on the other or facing side.
Often a cause for some photographic trouble shooting, back-lighting is an ideal fix for otherwise ordinary or flat lighting situations.