... In this Thread, we will become familiar with the orientation of shadows, their size in relation to the object casting them, and how the alignment of the Sun, the object, and the shadow tells us much about how shadows work. ... The key to understanding shadows is to realize that the light source and object must be lined up in order to make a shadow appear. ... The Sun. ... We saw that we had to line our hand up with the Sun to make a shadow, but we also had to line that shadow up with the shiny...