For the people who (like myself) are confused by the missing c^2 in the blog, (u + v)/(1+(uv/(c^2)) is the original. Much easier to understand that the "simplified" version, which is usually the case.
For the people who (like myself) are confused by the missing c^2 in the blog, (u + v)/(1+(uv/(c^2)) is the original. Much easier to understand that the "simplified" version, which is usually the case.