# Looking for an equation?

1. Dec 7, 2009

### zeromodz

I need an equation to find to what extent bodies stretch or compress reaching relativistic speeds. Thank you:)

2. Dec 7, 2009

### Matterwave

The Lorentz contraction:

$$L'=\frac{1}{\gamma}L$$

Where gamma is the Lorentz factor:

$$\gamma = \frac{1}{\sqrt{1-\frac{v^2}{c^2}}}$$