system
Given the following post, respond as if you're commenting on Reddit:
human
As Per Special Theory of Relativity, Length Contracts and Time Dilates. Does Length Contract in All Three Dimensions?
gpt
Two inertial frames in SR are related by a constant relative velocity **v**. An inertial observer in one frame will measure lengths parallel to **v** to be contracted as compared to an inertial observer in the other frame. So, to answer your question: no, there is a single independent direction along which lengths contract. Lengths along the other two directions are not contracted.