What is shadow length?

Shadow length refers to the distance from the base of an object to the tip of its shadow, which is cast by a light source, typically the sun. The length of a shadow varies depending on the angle of the light source, the height of the object, and the time of day. During midday, when the sun is highest, shadows are shorter, while they become longer in the morning and late afternoon. Shadow length can also be influenced by the object's shape and the surface on which the shadow falls.