Energy:
On the top, there is a long slider which allows you to vary the energy.
As you change the energy, the graph is automatically updated with a
wave function at that energy.
You can vary the energy by
- typing a new value in the box, and hitting Enter.
- clicking beside the slider in the channel. This shifts the energy
by about 9% of its range.
- pulling the slider. This will redraw the curve every time a
mouse motion is registered: it's great if you have a fast machine!
- clicking on the little arrows. This is the fine control: it changes
the energy by 0.001.
The recommended method is to use the 9% jumps to get close to the value
you want, then pull the slider (zooming in as necessary) to get as close
as the graininess of the pixels lets you, then use the small arrows
to polish. Sometimes (particularly for the ground state of Hydrogen)
you'll find pulling the slider makes the curve jump too much, yet
clicking the arrows makes it jump too little: you then either have
to resort to typing in values (remember to hit Enter)
or you can click on the little box on the right-hand side of the slider
and change the configuration (either change the max and min, or
alter the increment, which will change the jumps from the arrows).
Sometimes you may want to get even closer than 0.001 in
energy: you'll have to either edit the numbers in the little box, or
alter the increment for the slider.