---
title: strength
framework: scenekit
role: symbol
role_heading: Instance Property
path: scenekit/scnphysicsfield/strength
---

# strength

A multiplier for the force that the field applies to objects in its area of effect.

## Declaration

```swift
var strength: CGFloat { get set }
```

## Discussion

Discussion Each type of physics field defines its own behavior for strength values. For details, see the methods listed in Creating Physics Fields.

## See Also

### Specifying a Field’s Behavior

- [falloffExponent](scenekit/scnphysicsfield/falloffexponent.md)
- [minimumDistance](scenekit/scnphysicsfield/minimumdistance.md)
- [isActive](scenekit/scnphysicsfield/isactive.md)
- [isExclusive](scenekit/scnphysicsfield/isexclusive.md)