What is Shadow?
A shadow of an object is created when it gets in the way of traveling light. When light rays come in contact with an opaque vertical object, it gives rise to a horizontal line of some length, which we call by the name of shadow. The angle of elevation is utilised to calculate the shadow length. It is the angle formed by the horizontal line (shadow) and the line of sight (horizon).
How to determine the length of a Shadow?
To find the length of a shadow, you need to know the angle of the light source and the distance from the object to where the shadowlands. Measure how far the object is from the spot where its shadow touches the ground. Then, multiply this distance by the tangent of the light source’s angle. If the angle is less than 10 degrees, you can use this simple formula: Length of Shadow = Distance to Shadow Point × tan(Angle of Light). For greater accuracy or larger angles, you might need more complex math.