# Time

> Emit over time.

## Definition

* **Type:** Field
* **Namespace:** [UnityEngine](/engine/6000.6/script-reference/unityengine.md)
* **Assembly:** UnityEngine.ParticleSystemModule

> **Warning:**
>
> **Deprecated.** ParticleSystemEmissionType no longer does anything. Time and Distance based emission are now both always active.

```csharp
Time = 0
```