# Large Lorentz Boost

I understand the general concept of a lorentz transformation and a lorentz boost. What does it mean for a lorentz boost to be large however?

My current guess is that this is referring to a large difference in velocity between the frames of reference, is this accurate?

• Yes, That’s right. – Prahar Aug 6 '18 at 2:04
• Large can mean two things depending on the context: (1) $\gamma-1$ is not negligible compared to $1$ (as answered below) or (2) $\gamma \gg 1$. – safesphere Aug 6 '18 at 4:42

Note that for $v=0.1c$, the Lorentz factor $\gamma \approx 1.005$, which is negligible for many purposes, so a large Lorentz boost needs to be larger than that.