This example illustrates the use of a **Falloff Exponent** to control the falloff of a light. Falloff is defined as the rate at which light loses its energy as it travels away from its source. When not using **Inverse Square Falloff**, which is described in Example 4.2, this number is used as an exponent, providing **Exponential Falloff**. Exponential Falloff can often get close to realism, but will generally be best for stylized visuals.