> For the complete documentation index, see [llms.txt](https://themattempire.gitbook.io/documentation/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://themattempire.gitbook.io/documentation/archive/roblox/visual-effects-vfx/particle-emitters/emission-properties.md).

# Emission Properties

### Updated Particle Emitter

For this category I have added an arrow image in order to see some of the effects of the following category parameters.

<figure><img src="/files/y0QIv07QYpPRrmlmCgIK" alt=""><figcaption><p>Updated Default Emitter with an Arrow Image...</p></figcaption></figure>

### EmissionDirection

Defines which face the particle emits from.&#x20;

<figure><img src="/files/TkHbNrV85v1aYKEEfGmM" alt=""><figcaption><p>Emission Direction - Set to Back...</p></figcaption></figure>

### Enabled

Enables or Disables the Particle Emitter.

<figure><img src="/files/43bs6qrn3HlhzPjDoWI2" alt=""><figcaption><p>Disabling the Emitter ...</p></figcaption></figure>

### Lifetime

Defines the range of lifetime from minimum to maximum. They can be the same amount as well.

<figure><img src="/files/xcvJzkiYqML3fy5lMv3H" alt=""><figcaption><p>Lifetime - Set to 1 - 3.</p></figcaption></figure>

### Rate

Determines the number of particles spawned per second.

<figure><img src="/files/oAi8LBz14xDRypt7mRLV" alt=""><figcaption><p>Rate - Set to 3.</p></figcaption></figure>

### Rotation

Defines the rotation range of the particle. Angles from 0 to 360.

<figure><img src="/files/k8jj0mhDkGLN5jrqtkhC" alt=""><figcaption><p>Rotation - Set to 0 - 360.</p></figcaption></figure>

### RotSpeed

Defines the rotation by angle per second. Can define the minimum speed and maximum speed.

<figure><img src="/files/HxtwF0aNM3QLZVQlM1xe" alt=""><figcaption><p>RotSpeed - Set to 0 - 360...</p></figcaption></figure>

### Speed&#x20;

Range of speed in Studs per second.

<figure><img src="/files/OeW8rmOjrBbwfkLwz5KI" alt=""><figcaption><p>Speed - Set to 2 - 10...</p></figcaption></figure>

### SpreadAngle

Determines the angle on the X and Y in degrees. Using the Ros Particle Editor displays the angle much clearer.

<figure><img src="/files/TetbX8UkoiO7wxy3Y36K" alt=""><figcaption><p>SpeadAngle - Set to X : 10, Y: 10...</p></figcaption></figure>


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