# smoothness

> Smoothness of the specular reflection.

## Definition

* **Type:** Property
* **Namespace:** [UnityEngine](/engine/6000.0/script-reference/unityengine.md)
* **Assembly:** UnityEngine.TerrainModule

```csharp
public float smoothness { get; set; }
```

### Remarks

Specifies the surface smoothness : 0..1 where 0 is rough and 1 is mirror polish.