# tree_d_3d.constants

*module*

Physical constants (SI).

[View source](https://github.com/max-models/tree-d-3d/blob/devel/src/tree_d_3d/constants.py#L1-L1)

## tree_d_3d.constants.K_E

*attribute* · *module attribute*

```python
K_E: float = 8987551792.3
```

[View source](https://github.com/max-models/tree-d-3d/blob/devel/src/tree_d_3d/constants.py#L4-L4)