Question concerning the direction of the vector r in the FL

[3102]

Hello! I've got a question concerning the direction of the vector r in the Feynman Lectures of Physics in Chapter 13.3 http://www.feynmanlectures.caltech.edu/I_13.html#Ch13-S3

Which direction does the vector r in equation 13.5 point in?
The long equation before equation 13.6 suggests that it should point from $m_{j}$ to $m_{i}$.

Is that correct?

 

[UltrafastPED]

The convention is given in figure 13.2: the vectors point from 1 to 2.

 

[dauto]

Do you mean 13.15 and 13.16?

 

[3102]

Do you mean 13.15 and 13.16?

The vector should be the same in both equations.