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# intensity

The intensity of the directional light, measured in lumen per square
meter.

```
var intensity: Float
```

## Discussion

Lumen per square meter, also known as lux,
measures how much light is spread over an area.
It tells you how bright a surface appears based on the light it receives.

The default value for this property is `2145.7078`.

Use the following table as an estimate for Lux levels:

|Environment                  |Typical Lux Level   |
|:----------------------------|:-------------------|
|Full moon                    |0.1 - 1 lux         |
|Street lighting              |10 - 20 lux         |
|Living room lighting         |50 - 100 lux        |
|Classroom                    |250 - 750 lux       |
|Office lighting              |300 - 500 lux       |
|Sunrise/Sunset on a clear day|400 lux             |
|Overcast daylight            |1000 - 2000 lux     |
|Photography studio lighting  |1,000 - 2,000 lux   |
|Ambient daylight             |10,000 - 25,000 lux |
|Direct sunlight              |32,000 - 100,000 lux|

---

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