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- 4.1 - Falloff Exponent

**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.