Both particles are in spin in the opposite sense and travel laterally in the same direction. They generate fields because of their spin, in this case magnetic fields \(B\), in opposite directions.
When their distance apart is closer, below the turning point, where their force densities are decreasing, they interact as wave and merge, just as an apple falls to earth and nature is one. The result is a bigger particle of combined inertia,
\(q+q\rightarrow 2q\)
spinning in the same sense.
In a similar way,
\(q+2q\rightarrow 3q\)
This is not the same as moving two charges onto the surface of a conductor, where the charges redistribute themselves and we have a total of two charges on the conductor.
Nice!
