# Initial

> Each particle inherits the emitter's velocity on the frame when it was initially emitted.

## Definition

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

```csharp
Initial = 0
```

### Remarks

Each particle then maintains this constant velocity throughout its lifetime. The magnitude of the velocity can be modified by the curve multiplier.