---
title: strength
framework: spritekit
role: symbol
role_heading: Instance Property
path: spritekit/skfieldnode/strength
---

# strength

The strength of the field.

## Declaration

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

## Mentioned in

Adding Physics Fields to a Scene

## Discussion

Discussion The default value is 1.0. There’s no specific unit of measurement for this property because the actual effect is dependent on the kind of field node being created. In practice, the best approach is to experiment with different field strengths and use them to determine the proper value empirically.

## See Also

### Configuring the Strength of the Field

- [falloff](spritekit/skfieldnode/falloff.md)