First you might like to have a look at the instructions for the animator. Here is the link back to the presentation and back to the demonstration entry.
In all cases, as you can see on the figures, you want to hide as many tool buttons as you manage (in netscape there are some small 'arrows' to do that), find out how to do that for your browser.
To compare the two animations, it is best to use the frame version with the two animations in each its frame, so that you can have them both in one window. See this discussed below
If you do not have frames, or you are using small screen:
Open two windows of the browser (with MicroSoft Internet Exploder you probably start it once more to have to windows) and arrange them as shown on the figure:
To have picture like this, you pause (see instructions for the animator) both of the animations and take both to the start. You see that the densities are the same, both represent an |m|=1 state, but the p- runs with the clock, the p+ against the clock. (Link back to the presentation.)
Then you can advance each animation by single frames to compare the time development. Note that the projectile is moving in the upper half of the plane. What we see is that when the electron runs with the projectile (p- case), the transfer is more probable and more smooth. Also, it is transfered to an oriented state (current in 'circle'), while in the other case (p+) the transferred part is more aligned than oriented, and it is smaller.
(Link back to the presentation
and back to the demonstration entry.)
The instructions for the animator. Back to the presentation. Back to the demonstration entry.